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Chen F, Zhou B, Yang L, Zhuang J, Chen X. Annual atrazine residue estimation in Chinese agricultural soils by integrated modeling of machine learning and mechanism-based models. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134539. [PMID: 38718516 DOI: 10.1016/j.jhazmat.2024.134539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 04/25/2024] [Accepted: 05/03/2024] [Indexed: 05/30/2024]
Abstract
This study presents a comprehensive approach to estimating annual atrazine residues in China's agricultural soils, integrating machine learning algorithms and mechanism-based models. First, machine learning was used to predict essential parameters influencing atrazine's adsorption, degradation, and dispersivity of solute transport. The results demonstrated that soil organic matter was the most important input variable for predicting adsorption and degradation; clay content was the primary variable for predicting dispersivity. The SHapley Additive exPlanations (SHAP) contribution of various soil properties on target variables were also analyzed to reveal whether each input variable has a positive, negative, or complex effect. Subsequently, these parameters inform the construction of a detailed model across 23,692 subregions of China, with a 20 km × 20 km resolution. The model considered regional variations and soil layer heterogeneity, including rainfall, soil depth-specific properties, and parameters for adsorption, degradation, and dispersivity. Utilizing the convection-dispersion equations and the Phydrus, the model simulated atrazine's transport and degradation patterns across diverse soil environments after applying 250 mL of atrazine (40%) per Chinese mu. The outcomes provided a spatially explicit distribution of atrazine residues, specifying that the arid areas have the highest residual risk, followed by the Northeast, Southwest, and Southeast. Atrazine levels may exceed national drinking water standards at 50 cm depth in Inner Mongolia, the Qinghai-Tibet Plateau, and the Jungar Basin. This study's integrative approach may also offer valuable insights and tools for evaluating residues of various pesticides and herbicides in agricultural soils.
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Affiliation(s)
- Fengxian Chen
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
| | - Bin Zhou
- Chair of model-based environmental exposure science, Faculty of Medicine, University of Augsburg, Augsburg 86159, Germany
| | - Liqiong Yang
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
| | - Jie Zhuang
- Department of Biosystems Engineering and Soil Science, Center for Environmental Biotechnology, The University of Tennessee, Knoxville, TN 37996, United States
| | - Xijuan Chen
- Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, College of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China.
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2
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Rowley JJL, Symons A, Doyle C, Hall J, Rose K, Stapp L, Lettoof DC. Broad-scale pesticide screening finds anticoagulant rodenticide and legacy pesticides in Australian frogs. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172526. [PMID: 38636866 DOI: 10.1016/j.scitotenv.2024.172526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 03/20/2024] [Accepted: 04/14/2024] [Indexed: 04/20/2024]
Abstract
Pesticide contamination poses a significant threat to non-target wildlife, including amphibians, many of which are already highly threatened. This study assessed the extent of pesticide exposure in dead frogs collected during a mass mortality event across eastern New South Wales, Australia between July 2021 and March 2022. Liver tissue from 77 individual frogs of six species were analysed for >600 legacy and contemporary pesticides, including rodenticides. More than a third (36 %) of the liver samples contained at least one of the following pesticides: brodifacoum, dieldrin, DDE, heptachlor/heptachlor epoxide, fipronil sulfone, and 2-methyl-4-chlorophenoxyacetic acid (MCPA). Brodifacoum, a second-generation anticoagulant rodenticide, was found in four of the six frog species analysed: the eastern banjo frog (Limnodynastes dumerilii), cane toad (Rhinella marina), green tree frog (Litoria caerulea) and Peron's tree frog (Litoria peronii). This is the first report of anticoagulant rodenticide detected in wild amphibians, raising concerns about potential impacts on frogs and extending the list of taxa shown to accumulate rodenticides. Dieldrin, a banned legacy pesticide, was also detected in two species: striped marsh frog (Limnodynastes peronii) and green tree frog (Litoria caerulea). The toxicological effects of these pesticides on frogs are difficult to infer due to limited comparable studies; however, due to the low frequency of detection the presence of these pesticides was not considered a major contributing factor to the mass mortality event. Additional research is needed to investigate the effects of pesticide exposure on amphibians, particularly regarding the impacts of second-generation anticoagulant rodenticides. There is also need for continued monitoring and improved conservation management strategies for the mitigation of the potential threat of pesticide exposure and accumulation in amphibian populations.
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Affiliation(s)
- Jodi J L Rowley
- Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, New South Wales 2010, Australia; Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences (BEES), University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Andrew Symons
- New South Wales Department of Climate Change, Energy, the Environment and Water, Environment Protection Science Branch, 480 Weeroona Road, Lidcombe, New South Wales 2141, Australia
| | - Christopher Doyle
- New South Wales Department of Climate Change, Energy, the Environment and Water, Environment Protection Science Branch, 480 Weeroona Road, Lidcombe, New South Wales 2141, Australia
| | - Jane Hall
- Australian Registry of Wildlife Health, Taronga Conservation Society Australia, Bradley's Head Road, Mosman, NSW 2088, Australia
| | - Karrie Rose
- Australian Registry of Wildlife Health, Taronga Conservation Society Australia, Bradley's Head Road, Mosman, NSW 2088, Australia
| | - Laura Stapp
- New South Wales Department of Climate Change, Energy, the Environment and Water, Environment Protection Science Branch, 480 Weeroona Road, Lidcombe, New South Wales 2141, Australia
| | - Damian C Lettoof
- Environment, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Centre for Environment and Life Sciences, Floreat, Western Australia 6014, Australia; School of Molecular and Life Sciences, Curtin University, Brand Drive, Bentley, Western Australia 6102, Australia
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3
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Zhang K, Zheng Z, Mutzner L, Shi B, McCarthy D, Le-Clech P, Khan S, Fletcher TD, Hancock M, Deletic A. Review of trace organic chemicals in urban stormwater: Concentrations, distributions, risks, and drivers. WATER RESEARCH 2024; 258:121782. [PMID: 38788526 DOI: 10.1016/j.watres.2024.121782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 05/07/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024]
Abstract
Urban stormwater, increasingly seen as a potential water resource for cities and towns, contains various trace organic chemicals (TrOCs). This study, conducted through a comprehensive literature review of 116 publications, provides a detailed report on the occurrence, concentration distribution, health, and ecological risks of TrOCs, as well as the impact of land use and rainfall characteristics on their concentrations. The review uncovers a total of 629 TrOCs detected at least once in urban stormwater, including 228 pesticides, 132 pharmaceutical and personal care products (PPCPs), 29 polycyclic aromatic hydrocarbons (PAHs), 30 per- and polyfluorinated substances (PFAS), 28 flame retardants, 24 plasticizers, 22 polychlorinated biphenyls (PCBs), nine corrosion inhibitors, and 127 other industrial chemicals/intermediates/solvents. Concentration distributions were explored, with the best fit being log-normal distribution. Risk assessment highlighted 82 TrOCs with high ecological risk quotients (ERQ > 1.0) and three with potential health risk quotients (HQ > 1.0). Notably, 14 TrOCs (including six PAHs, five pesticides, three flame-retardants, and one plasticizer) out of 68 analyzed were significantly influenced by land-use type. Relatively weak relationships were observed between rainfall characteristics and pollutant concentrations, warranting further investigation. This study provides essential information about the occurrence and risks of TrOCs in urban stormwater, offering valuable insights for managing these emerging chemicals of concern.
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Affiliation(s)
- Kefeng Zhang
- Water Research Centre, School of Civil and Environmental Engineering, UNSW Sydney, Kensington, NSW 2052, Australia.
| | - Zhaozhi Zheng
- Water Research Centre, School of Civil and Environmental Engineering, UNSW Sydney, Kensington, NSW 2052, Australia
| | - Lena Mutzner
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf 8600, Switzerland
| | - Baiqian Shi
- Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia
| | - David McCarthy
- Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia; Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Pierre Le-Clech
- UNESCO Centre for Membrane Science and Technology, School of Chemical Engineering, UNSW Sydney, Kensington, NSW 2052, Australia
| | - Stuart Khan
- School of Civil Engineering, University of Sydney, Sydney, NSW 2006, Australia
| | - Tim D Fletcher
- School of Agriculture, Food & Ecosystem Sciences, Faculty of Science, The University of Melbourne, Richmond, VIC 3121, Australia
| | - Marty Hancock
- Water Research Australia, Adelaide, SA 5000, Australia
| | - Ana Deletic
- Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4001, Australia
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4
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Alaysuy O, Aljohani MM, Alkhamis K, Alatawi NM, Almotairy AR, Abu Al-Ola KA, Khder AS, El-Metwaly NM. Synthesis, characterization and adsorption optimization of bimetallic La-Zn metal organic framework for removal of 2,4-dichlorophenylacetic acid. Heliyon 2024; 10:e28622. [PMID: 38689963 PMCID: PMC11059553 DOI: 10.1016/j.heliyon.2024.e28622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 05/02/2024] Open
Abstract
To eliminate the hazardous pesticide 2,4-dichlorophenylacetic acid (2,4-D) through aqueous solutions, stacked nanorods known as hetero bimetallic organic frameworks (MOFs) of 2-methyl imidazole based on lanthanum and zinc are created. The research's convincing discoveries displayed that La/Zn-MOF is an actual adsorbent for the removal of 2,4-D through aqueous solutions. The La/Zn-MOF was investigated using a variability of techniques, with scanning electron microscope (SEM), powered X-ray diffraction (PXRD), and Brunauer-Emmett-Teller (BET) investigation. La/Zn-MOF has a significant pore capacity of 1.04 cm³/g and a comparatively large surface area of 897.69 m2/g. Our findings, which are quite intriguing, demonstrate that adsorption behavior is pointedly wedged by variations in pH. A pH 6 dose of 0.02 g was shown to be the optimal setting for the greatest capacity for adsorption. Because adsorption is an endothermic process, temperature variations affect its capability. The adsorption method was fit both isothermally and kinetically using the Langmuir isotherm classical. It was created that the entire process made use of a chemisorption mechanism. Solution pH, temperature, adsorbent dosage, and time were all improved using the Box-Behnken design (BBD) and Response Surface Methodology (RSM). We were able to accurately calculate the values of ΔHo, ΔSo, and ΔGo for 2,4-D by following the guidelines. These results demonstrated the spontaneous and endothermic character of the adsorption procedure employing La/Zn-MOF as an adsorbent. Adsorption-desorption cycles can be carried out up to five times. With the synthesized La/Zn-MOF adsorbent due to its exceptional reusability. Many processes, such π-π interaction, pore filling, H-bonding, or electrostatic contact, were postulated to explain the connection between La/Zn-MOF and 2,4-D after extra research to appreciate well the link was conducted. This is the first study to demonstrate the effectiveness of utilizing La/Zn-MOF as an adsorbent to eliminate 2,4-D from wastewater models. The results display that a pH of 6 is required to achieve the maximal 2,4-D adsorption capability on La/Zn-MOF, which is 307.5 mg/g.
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Affiliation(s)
- Omaymah Alaysuy
- Department of Chemistry, College of Science, University of Tabuk, 71474, Tabuk, Saudi Arabia
| | - Meshari M. Aljohani
- Department of Chemistry, College of Science, University of Tabuk, 71474, Tabuk, Saudi Arabia
| | - Kholood Alkhamis
- Department of Chemistry, College of Science, University of Tabuk, 71474, Tabuk, Saudi Arabia
| | - Nada M. Alatawi
- Department of Chemistry, College of Science, University of Tabuk, 71474, Tabuk, Saudi Arabia
| | - Awatif R.Z. Almotairy
- Department of Chemistry, Faculty of Science, Taibah University, Yanbu, 30799, Saudi Arabia
| | - Khulood A. Abu Al-Ola
- Department of Chemistry, College of Science, Taibah University, 30002, Al-Madinah Al-Munawarah, Saudi Arabia
| | - Abdelrahman S. Khder
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Chemistry, Faculty of Science, Mansoura University, El-Gomhoria Street 35516, Egypt
| | - Nashwa M. El-Metwaly
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Chemistry, Faculty of Science, Mansoura University, El-Gomhoria Street 35516, Egypt
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5
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Malin JT, Kaushal SS, Mayer PM, Maas CM, Hohman SP, Rippy MA. Longitudinal stream synoptic (LSS) monitoring to evaluate water quality in restored streams. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:437. [PMID: 38592553 PMCID: PMC11069387 DOI: 10.1007/s10661-024-12570-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 03/23/2024] [Indexed: 04/10/2024]
Abstract
Impervious surface cover increases peak flows and degrades stream health, contributing to a variety of hydrologic, water quality, and ecological symptoms, collectively known as the urban stream syndrome. Strategies to combat the urban stream syndrome often employ engineering approaches to enhance stream-floodplain reconnection, dissipate erosive forces from urban runoff, and enhance contaminant retention, but it is not always clear how effective such practices are or how to monitor for their effectiveness. In this study, we explore applications of longitudinal stream synoptic (LSS) monitoring (an approach where multiple samples are collected along stream flowpaths across both space and time) to narrow this knowledge gap. Specifically, we investigate (1) whether LSS monitoring can be used to detect changes in water chemistry along longitudinal flowpaths in response to stream-floodplain reconnection and (2) what is the scale over which restoration efforts improve stream quality. We present results for four different classes of water quality constituents (carbon, nutrients, salt ions, and metals) across five watersheds with varying degrees of stream-floodplain reconnection. Our work suggests that LSS monitoring can be used to evaluate stream restoration strategies when implemented at meter to kilometer scales. As streams flow through restoration features, concentrations of nutrients, salts, and metals significantly decline (p < 0.05) or remain unchanged. This same pattern is not evident in unrestored streams, where salt ion concentrations (e.g., Na+, Ca2+, K+) significantly increase with increasing impervious cover. When used in concert with statistical approaches like principal component analysis, we find that LSS monitoring reveals changes in entire chemical mixtures (e.g., salts, metals, and nutrients), not just individual water quality constituents. These chemical mixtures are locally responsive to restoration projects, but can be obscured at the watershed scale and overwhelmed during storm events.
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Affiliation(s)
- Joseph T Malin
- Department of Geology & Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, 20742, USA.
- Environmental Quality Resources, L.L.C., 2391 Brandermill Blvd., Suite 301, Gambrills, MD, 21054, USA.
| | - Sujay S Kaushal
- Department of Geology & Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, 20742, USA
| | - Paul M Mayer
- Environmental Protection Agency, 805 SW Broadway #500, Portland, OR, 97205, USA
| | - Carly M Maas
- Department of Geology & Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, 20742, USA
- United States Geological Survey, 1730 E Parham Road, Richmond, VA, 23228, USA
| | - Steven P Hohman
- Environmental Protection Agency, 1650 Arch St, Philadelphia, PA, 19103, USA
| | - Megan A Rippy
- Occoquan Watershed Monitoring Laboratory, The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, 9408 Prince William Street, Manassas, VA, USA
- Center for Coastal Studies, Virginia Tech, 1068A Derring Hall (0420), Blacksburg, VA, USA
- Disaster Resilience and Risk Management (DRRM), 1068A Derring Hall, 405 Perry Street, Blacksburg, VA, 24061, USA
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6
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Kang D, Yun D, Cho KH, Baek SS, Jeon J. Profiling emerging micropollutants in urban stormwater runoff using suspect and non-target screening via high-resolution mass spectrometry. CHEMOSPHERE 2024; 352:141402. [PMID: 38346509 DOI: 10.1016/j.chemosphere.2024.141402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/24/2024]
Abstract
Urban surface runoff contains chemicals that can negatively affect water quality. Urban runoff studies have determined the transport dynamics of many legacy pollutants. However, less attention has been paid to determining the first-flush effects (FFE) of emerging micropollutants using suspect and non-target screening (SNTS). Therefore, this study employed suspect and non-target analyses using liquid chromatography-high resolution mass spectrometry to detect emerging pollutants in urban receiving waters during stormwater events. Time-interval sampling was used to determine occurrence trends during stormwater events. Suspect screening tentatively identified 65 substances, then, their occurrence trend was grouped using correlation analysis. Non-target peaks were prioritized through hierarchical cluster analysis, focusing on the first flush-concentrated peaks. This approach revealed 38 substances using in silico identification. Simultaneously, substances identified through homologous series observation were evaluated for their observed trends in individual events using network analysis. The results of SNTS were normalized through internal standards to assess the FFE, and the most of tentatively identified substances showed observed FFE. Our findings suggested that diverse pollutants that could not be covered by target screening alone entered urban water through stormwater runoff during the first flush. This study showcases the applicability of the SNTS in evaluating the FFE of urban pollutants, offering insights for first-flush stormwater monitoring and management.
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Affiliation(s)
- Daeho Kang
- Department of Environmental Engineering, Changwon National University, Changwon, Gyeongsangnamdo, 51140, South Korea
| | - Daeun Yun
- Civil Urban Earth and Environmental Engineering, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan, 44919, South Korea
| | - Kyung Hwa Cho
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, 02841, South Korea
| | - Sang-Soo Baek
- Department of Environmental Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan-Si, Gyeongbuk, 38541, South Korea
| | - Junho Jeon
- Department of Environmental Engineering, Changwon National University, Changwon, Gyeongsangnamdo, 51140, South Korea; School of Smart and Green Engineering, Changwon National University, Changwon, Gyeongsangnamdo, 51140, South Korea.
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7
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Zheng Z, Zhang K, Toe CY, Amal R, Deletic A. Photo-electrochemical oxidation flow system for stormwater herbicides removal: Operational conditions and energy consumption analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 898:166375. [PMID: 37598967 DOI: 10.1016/j.scitotenv.2023.166375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/31/2023] [Accepted: 08/15/2023] [Indexed: 08/22/2023]
Abstract
Photoelectrochemical oxidation (PECO) is a promising advanced technology for treating micropollutants in stormwater. However, it is important to understand its operation prior to practical validation. In this study, we introduced a flow PECO system designed to evaluate its potential for full-scale applications in herbicides degradation, providing valuable insights for future large-scale implementations. The PECO flow reactor demonstrated the ability to treat a larger volume of stormwater (675 mL, approximately 10 times more than previous batch experiments) with effective removal rates of 92 % for diuron and 22 % for atrazine over 6 h of operation at 2 V. To address the large volume issue in stormwater treatment, a multiple module parallel application design is being considered to increase the treatment capacity of the PECO flow reactor. During the flow reactor operations, flow rate was found to have a notable impact on removal performance, particularly for diuron. At a flow rate of 610 mL min-1, approximately 90 % removal of diuron was achieved, while at 29 mL min-1, the removal efficiency decreased to 60 %. While light intensity had minimal effect on diuron degradation (all settings achieved over 90 % removal), it enhanced atrazine degradation from 9 % to 31 % with an increase in intensity from 63 mW cm-2 to 144 mW cm-2. Remarkably, the PECO flow system exhibited excellent removal performance (>90 % removal) for diuron even at extremely high initial pollutant concentrations (240 μg L-1), demonstrating its capacity to handle varying contaminant loads in stormwater. Energy consumption analysis revealed that flow rate as the primary factor influenced the specific energy consumption rate. Higher flow rate (e.g., 610 mL min-1) were preferable in flow reactor due to its well-balanced performance between removal and energy consumption. These findings confirm that the PECO flow system offers an efficient and promising approach for stormwater treatment applications.
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Affiliation(s)
- Zhaozhi Zheng
- School of Civil and Environmental Engineering, University of New South Wales, Kensington, NSW 2052, Australia.
| | - Kefeng Zhang
- School of Civil and Environmental Engineering, University of New South Wales, Kensington, NSW 2052, Australia
| | - Cui Ying Toe
- School of Chemical Engineering, University of New South Wales, NSW 2052, Australia; School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Rose Amal
- School of Chemical Engineering, University of New South Wales, NSW 2052, Australia
| | - Ana Deletic
- School of Civil and Environmental Engineering, University of New South Wales, Kensington, NSW 2052, Australia; School of Civil and Environmental Engineering, Engineering Faculty, Queensland University of Technology, Queensland 4001, Australia
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8
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Alluhaybi A, Alharbi A, Alshammari KF, El-Desouky MG. Efficient Adsorption and Removal of the Herbicide 2,4-Dichlorophenylacetic Acid from Aqueous Solutions Using MIL-88(Fe)-NH 2. ACS OMEGA 2023; 8:40775-40784. [PMID: 37929154 PMCID: PMC10620896 DOI: 10.1021/acsomega.3c05818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/02/2023] [Indexed: 11/07/2023]
Abstract
Metal-organic frameworks (MOFs), a material known for its multifunctionality, chemical stability, and high surface area, are now commonly utilized as an adsorbent for water treatment. The MOF (MIL-88(Fe)-NH2) was synthesized and used to remove the commonly used toxic herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) from water. The MIL-88(Fe)-NH2 MOF was fully characterized using multiple techniques. A systematic investigation was conducted to evaluate the key parameters that impact the adsorption process, which include coexisting anions, adsorbent dosage, and solution pH. The adsorption isotherm was fitted using the Langmuir model, while the kinetics were fitted using pseudo-second-order. The adsorption process was both chemisorption and endothermic. The capacity for adsorption increased with rising temperatures. The MIL-88(Fe)-NH2 adsorbent has a maximum adsorption capacity of 345.25 mg g-1 for removing 2,4-D, significantly higher than previous adsorbents used for this purpose. The adsorption mechanism could be ascribed to hydrogen bonding, pore filling, π-π conjugations between the 2,4-D molecules and the MIL-88(Fe)-NH2 adsorbent, and electrostatic interactions. Furthermore, the adsorption capacity of MIL-88(Fe)-NH2 adsorbent showed only a slight decrease after five successive recycles, and it could be easily regenerated through solvent washing. When used in environmental water samples, especially those containing electronic wastes, the MIL-88(Fe)-NH2 adsorbent demonstrated satisfactory adsorption capacity and reusability. The MIL-88(Fe)-NH2 adsorbent is more practical and reusable and has better adsorption capacity and shorter equilibrium time compared to previously reported adsorbents.
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Affiliation(s)
- Ahmad
A. Alluhaybi
- Department
of Chemistry, College of Science and Arts, King Abdulaziz University, 25732 Rabigh, Saudi Arabia
| | - Ahmed Alharbi
- Department
of Chemistry, Faculty of Sciences, Umm Al-Qura
University, 21955 Makkah, Saudi Arabia
| | - Khaled F. Alshammari
- Department
of Criminal Justice and Forensics, King
Fahad Security College, 11461 Riyadh, Saudi
Arabia
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Li Y, Guo R, Liang X, Yao B, Yan S, Guo Y, Han Y, Cui J. Pollution characteristics, ecological and health risks of herbicides in a drinking water source and its inflowing rivers in North China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122130. [PMID: 37394054 DOI: 10.1016/j.envpol.2023.122130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 06/27/2023] [Accepted: 06/29/2023] [Indexed: 07/04/2023]
Abstract
This study measured the pollution characteristics and ecological and health risks of 19 herbicides found in drinking water sources and their inflowing rivers. The targeted herbicides were prevalent in the study area, but most concentrations were well below 10 ng L-1. Acetochlor and atrazine were the dominant herbicides, although their levels were much lower than previously reported. Total herbicide residual levels were greater in April than in December and increased from upstream to downstream, resulting in the highest pollution levels found in the reservoirs, likely due to herbicides delivered from upstream and dense agricultural planting in the surrounding areas. Only atrazine and ametryn presented moderate ecological risks, while the summed risk quotients (ΣRQs) of each sample were >0.1, indicated that the total herbicide levels represented a moderate risk in all samples. For the human health risks, the risk quotients (RQ) of all target herbicides, the total RQs of each sample, and estimated life-stage RQs were far smaller than the 0.2 threshold, indicating the absence of human health risks when the water was consumed at any stage of life. However, early life stages exhibited 3-6 times higher RQ values than adulthood and should not be overlooked. And crucially, the synergistic or antagonistic effects of mixed herbicides are not well understood, and further research is needed to understand the impact of these herbicides on the ecosystem and human health, particularly possible affects in early life stages, such as infants and children.
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Affiliation(s)
- Yilin Li
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Ruiyao Guo
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Xiaoge Liang
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Bo Yao
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China.
| | - Shuwen Yan
- Department of Environmental Science & Engineering, Fudan University, Shanghai, 200433, China
| | - Yanan Guo
- Department of Cardiology, Hebei Province Hospital of Traditional Chinese Medicine, Shijiazhuang, 050011, China
| | - Yonghui Han
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Jiansheng Cui
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
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10
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Le TDH, Pham LH, Dinh QT, Le TMT, Tram NTB. Land Use Influencing the Distribution of Pesticides in Surface Water: The Case of the Ma River and Its Tributaries in Thanh Hoa Province, Vietnam. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 85:290-301. [PMID: 37515646 DOI: 10.1007/s00244-023-01018-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 07/11/2023] [Indexed: 07/31/2023]
Abstract
Pesticide residues are regularly found in surface water, which could be dangerous for freshwater ecosystems and biodiversity. Pesticides may enter waters through a variety of pathways, but runoff from irrigation or precipitation has the highest quantities. Previous studies analyzing the pesticides pollution or ecological risks of pesticides focused on few regions (e.g., European and United States), whereas analysis of pesticide pollution in Southeast Asia and especially in Vietnam is limited. This study presents an investigation of banned pesticides used across the range of land use in catchments of the Ma river and its tributaries in Thanh Hoa province, Vietnam. Applying principal component analysis (PCA), we investigated the relationship between specific pesticides and land use. Besides, cluster analysis (CA), the method of aggregating monitoring locations, was applied in this study to find spatial pattern of pesticides pollution. Due to their persistence and remobilization during floods and runoff, all ten banned pesticides-eight insecticides (aldrin/dieldrin, BHC, chlordane, endrin, heptachlor, lindane, malathion, and parathion) and two herbicides (paraquat, and 2,4D)-still remain in surface water and are not presumably influenced by the fraction of land use area in the catchments. Clustering results revealed that banned pesticides still occur in some areas. Site TH08 close to Le Mon industrial zone and TH18 in Thanh Hoa city have higher concentrations of banned pesticides than other sites due to their highly toxic and long-time existence in the environment. Overall, our study provides approach to investigate pesticides in surface water for a province in Vietnam that may be used for future ecotoxicological studies to enhance risk assessment for stream ecosystems.
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Affiliation(s)
- Trong Dieu Hien Le
- Faculty of Resources and Environment, University of Thu Dau Mot, 06 Tran Van On Street, Thu Dau Mot City, Binh Duong, Vietnam.
| | - Luan Hong Pham
- National University of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quang Toan Dinh
- Department of Science and Technology of Thanh Hoa, Thanh Hoa, 400570, Vietnam
| | - Tran Minh Thao Le
- Program of Urban Planning, Faculty of Architecture, University of Thu Dau Mot, 06 Tran Van On Street, Thu Dau Mot City, Binh Duong, Vietnam
| | - Nguyen Thi Bich Tram
- Institute of Applied Technology, University of Thu Dau Mot, 06 Tran Van On Street, Thu Dau Mot City, Binh Duong, Vietnam
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11
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Maas CM, Kaushal SS, Rippy MA, Mayer PM, Grant SB, Shatkay RR, Malin JT, Bhide SV, Vikesland P, Krauss L, Reimer JE, Yaculak AM. Freshwater salinization syndrome limits management efforts to improve water quality. FRONTIERS IN ENVIRONMENTAL SCIENCE 2023; 11:1-20. [PMID: 37841559 PMCID: PMC10568995 DOI: 10.3389/fenvs.2023.1106581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Freshwater Salinization Syndrome (FSS) refers to groups of biological, physical, and chemical impacts which commonly occur together in response to salinization. FSS can be assessed by the mobilization of chemical mixtures, termed "chemical cocktails", in watersheds. Currently, we do not know if salinization and mobilization of chemical cocktails along streams can be mitigated or reversed using restoration and conservation strategies. We investigated 1) the formation of chemical cocktails temporally and spatially along streams experiencing different levels of restoration and riparian forest conservation and 2) the potential for attenuation of chemical cocktails and salt ions along flowpaths through conservation and restoration areas. We monitored high-frequency temporal and longitudinal changes in streamwater chemistry in response to different pollution events (i.e., road salt, stormwater runoff, wastewater effluent, and baseflow conditions) and several types of watershed management or conservation efforts in six urban watersheds in the Chesapeake Bay watershed. Principal component analysis (PCA) indicates that chemical cocktails which formed along flowpaths (i.e., permanent reaches of a stream) varied due to pollution events. In response to winter road salt applications, the chemical cocktails were enriched in salts and metals (e.g., Na+, Mn, and Cu). During most baseflow and stormflow conditions, chemical cocktails were less enriched in salt ions and trace metals. Downstream attenuation of salt ions occurred during baseflow and stormflow conditions along flowpaths through regional parks, stream-floodplain restorations, and a national park. Conversely, chemical mixtures of salt ions and metals, which formed in response to multiple road salt applications or prolonged road salt exposure, did not show patterns of rapid attenuation downstream. Multiple linear regression was used to investigate variables that influence changes in chemical cocktails along flowpaths. Attenuation and dilution of salt ions and chemical cocktails along stream flowpaths was significantly related to riparian forest buffer width, types of salt pollution, and distance downstream. Although salt ions and chemical cocktails can be attenuated and diluted in response to conservation and restoration efforts at lower concentration ranges, there can be limitations in attenuation during road salt events, particularly if storm drains bypass riparian buffers.
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Affiliation(s)
- Carly M. Maas
- Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
- Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Sujay S. Kaushal
- Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
- Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Megan A. Rippy
- Occoquan Watershed Monitoring Laboratory, The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, United States
- Center for Coastal Studies, Virginia Tech, Blacksburg, VA, United States
| | - Paul M. Mayer
- US Environmental Protection Agency, Center for Public Health and Environmental Assessment, Pacific Ecological Systems Division, Corvallis, OR, United States
| | - Stanley B. Grant
- Occoquan Watershed Monitoring Laboratory, The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, United States
- Center for Coastal Studies, Virginia Tech, Blacksburg, VA, United States
| | - Ruth R. Shatkay
- Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
- Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Joseph T. Malin
- Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
- Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Shantanu V. Bhide
- Occoquan Watershed Monitoring Laboratory, The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, United States
| | - Peter Vikesland
- The Charles E. Via Jr Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, United States
| | - Lauren Krauss
- Occoquan Watershed Monitoring Laboratory, The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, United States
| | - Jenna E. Reimer
- Department of Soil, Water, and Ecosystem Sciences, University of Florida, Gainesville, FL, United States
| | - Alexis M. Yaculak
- Water Sciences and Policy Graduate Program, University of Delaware, Newark, DE, United States
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12
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Kaushal SS, Maas CM, Mayer PM, Newcomer-Johnson TA, Grant SB, Rippy MA, Shatkay RR, Leathers J, Gold AJ, Smith C, McMullen EC, Haq S, Smith R, Duan S, Malin J, Yaculak A, Reimer JE, Newcomb KD, Raley AS, Collison DC, Galella JG, Grese M, Sivirichi G, Doody TR, Vikesland P, Bhide SV, Krauss L, Daugherty M, Stavrou C, Etheredge M, Ziegler J, Kirschnick A, England W, Belt KT. Longitudinal stream synoptic monitoring tracks chemicals along watershed continuums: a typology of trends. FRONTIERS IN ENVIRONMENTAL SCIENCE 2023; 11:1-28. [PMID: 37475839 PMCID: PMC10355011 DOI: 10.3389/fenvs.2023.1122485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
There are challenges in monitoring and managing water quality due to spatial and temporal heterogeneity in contaminant sources, transport, and transformations. We demonstrate the importance of longitudinal stream synoptic (LSS) monitoring, which can track combinations of water quality parameters along flowpaths across space and time. Specifically, we analyze longitudinal patterns of chemical mixtures of carbon, nutrients, greenhouse gasses, salts, and metals concentrations along 10 flowpaths draining 1,765 km2 of the Chesapeake Bay region. These 10 longitudinal stream flowpaths are drained by watersheds experiencing either urban degradation, forest and wetland conservation, or stream and floodplain restoration. Along the 10 longitudinal stream flowpaths, we monitored over 300 total sampling sites along a combined stream length of 337 km. Synoptic monitoring along longitudinal flowpaths revealed: (1) increasing, decreasing, piecewise, or no trends and transitions in water quality with increasing distance downstream, which provide insights into water quality processes along flowpaths; (2) longitudinal trends and transitions in water quality along flowpaths can be quantified and compared using simple linear and non-linear statistical relationships with distance downstream and/or land use/land cover attributes, (3) attenuation and transformation of chemical cocktails along flowpaths depend on: spatial scales, pollution sources, and transitions in land use and management, hydrology, and restoration. We compared our LSS patterns with others from the global literature to synthesize a typology of longitudinal water quality trends and transitions in streams and rivers based on hydrological, biological, and geochemical processes. Applications of LSS monitoring along flowpaths from our results and the literature reveal: (1) if there are shifts in pollution sources, trends, and transitions along flowpaths, (2) which pollution sources can spread further downstream to sensitive receiving waters such as drinking water supplies and coastal zones, and (3) if transitions in land use, conservation, management, or restoration can attenuate downstream transport of pollution sources. Our typology of longitudinal water quality responses along flowpaths combines many observations across suites of chemicals that can follow predictable patterns based on watershed characteristics. Our typology of longitudinal water quality responses also provides a foundation for future studies, watershed assessments, evaluating watershed management and stream restoration, and comparing watershed responses to non-point and point pollution sources along streams and rivers. LSS monitoring, which integrates both spatial and temporal dimensions and considers multiple contaminants together (a chemical cocktail approach), can be a comprehensive strategy for tracking sources, fate, and transport of pollutants along stream flowpaths and making comparisons of water quality patterns across different watersheds and regions.
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Affiliation(s)
- Sujay S. Kaushal
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Carly M. Maas
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Paul M. Mayer
- United States Environmental Protection Agency, Office of Research and Development, Center for Public Health and Environmental Assessment, Pacific Ecological Systems Division, Corvallis, OR, United States
| | - Tammy A. Newcomer-Johnson
- United States Environmental Protection Agency, Center for Environmental Measurement and Modeling, Watershed and Ecosystem Characterization Division, Cincinnati, OH, United States
| | - Stanley B. Grant
- Occoquan Watershed Monitoring Laboratory, The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, United States
- Center for Coastal Studies, Virginia Tech, Blacksburg, VA, United States
| | - Megan A. Rippy
- Occoquan Watershed Monitoring Laboratory, The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, United States
- Center for Coastal Studies, Virginia Tech, Blacksburg, VA, United States
| | - Ruth R. Shatkay
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | | | - Arthur J. Gold
- Department of Natural Resources Science, University of Rhode Island, Kingston, RI, United States
| | - Cassandra Smith
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Evan C. McMullen
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Shahan Haq
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Rose Smith
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Shuiwang Duan
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Joseph Malin
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Alexis Yaculak
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Jenna E. Reimer
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Katie Delaney Newcomb
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Ashley Sides Raley
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Daniel C. Collison
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Joseph G. Galella
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | | | | | - Thomas R. Doody
- Department of Geology, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
| | - Peter Vikesland
- The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, United States
| | - Shantanu V. Bhide
- Occoquan Watershed Monitoring Laboratory, The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, United States
| | - Lauren Krauss
- Occoquan Watershed Monitoring Laboratory, The Charles E. Via, Jr. Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, United States
| | | | | | | | | | | | | | - Kenneth T. Belt
- Department of Geography and Environmental Systems, University of Maryland Baltimore County, Baltimore, MD, United States
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13
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Liu L, Dobson B, Mijic A. Water quality management at a critical checkpoint by coordinated multi-catchment urban-rural load allocation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 340:117979. [PMID: 37094387 DOI: 10.1016/j.jenvman.2023.117979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 04/01/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023]
Abstract
Improving river water quality at critical checkpoints, defined as locations with significant impacts on water use, to satisfy regulation standards is an important goal of sustainable catchment management. Challenges remain in investigating pollution hotspots, designing efficient target reduction, and evaluating management performance. To address these challenges, we develop a systems approach for water quality management that integrates natural physical processes with human activities and their environmental impacts. In this approach, we firstly expand the concepts of headroom (amount under a permitted value) and excess (amount exceeding a permit) onto the source, spatial, and temporal domains for water quality management. We evaluate system-wide pollution contributions by simulating physical processes in a semi-distributed integrated representation using the CatchWat-SD model. We apply the model to the Upper Thames River basin and validate it using available monitoring data. We then incorporate the evaluated headroom-excess into a coordinated load allocation to enhance the efficiency and feasibility of interventions. Load allocation scenarios where headroom-excess is coordinated at different domains are generated and simulated. Finally, we evaluate the performance of these scenarios using multi-criteria metrics to demonstrate the advantages of headroom-excess coordination. Results show that urban sources, downstream sub-catchments, and dry season flows are associated with excess, thus, enabling managers to identify which cases (pollution sources, locations, and times) to focus load reductions towards. The more a load allocation strategy coordinates headroom-excess across domains, the more target reduction is allocated to the cases with excess, and the better performance it obtains in all the criteria. The study emphasises the need to incorporate headroom-excess in load allocation, which helps to improve systems-level water quality performance more efficiently. The approach can be further expanded to water quality management at multiple checkpoints for sustainable management of regional water systems.
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Affiliation(s)
- Leyang Liu
- Department of Civil and Environmental Engineering, Imperial College London, London, UK.
| | - Barnaby Dobson
- Department of Civil and Environmental Engineering, Imperial College London, London, UK
| | - Ana Mijic
- Department of Civil and Environmental Engineering, Imperial College London, London, UK
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14
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Zhang B, Zhang QQ, Cai YY, Yan XT, Zhai YQ, Guo Z, Ying GG. Environmental emissions and pollution characteristics of mosquitocides for the control of dengue fever in a typical urban area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 867:161513. [PMID: 36634776 DOI: 10.1016/j.scitotenv.2023.161513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/25/2022] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
Mosquitocides are frequently used to control the spread of dengue fever in tropical and sub-tropic urban regions worldwide, resulting in their discharge into the environment via rainfall runoff, causing adverse effects on ecological health. This study quantitatively evaluated mosquitocide emissions and environmental pollution in a typical urban district in China affected by the dengue fever epidemic, using a method combining market surveys, monitoring campaigns and SWMM (storm water management model) modelling tools. During the assessment period, the total mosquitocide usage in the urban district reached 6334 kg, with an estimated load of 56.55 g entering the receiving environment via rainfall runoff, 91.04 % of which occurred in the rainy season. Monitoring results indicated that the initial 0.5-1 h was the main period of mosquitocide wash off into the receiving water. Environmental mosquitocide pollution levels were found to be affected by the mosquitocide type and the time interval between mosquitocide application and precipitation events. The measured environmental concentrations of mosquitocides in this study were generally higher than those areas unaffected by the dengue fever epidemic. The modelled mosquitocide concentrations were in accordance with monitoring results. The finding of this study are important for assessing the environmental impact of dengue fever control activities, while also providing valuable baseline data for the effective environmental management of mosquitocides.
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Affiliation(s)
- Bing Zhang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China; Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Qian-Qian Zhang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China.
| | - Ya-Ya Cai
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China
| | - Xiao-Ting Yan
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China
| | - Yun-Qiu Zhai
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China
| | - Zhao Guo
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China
| | - Guang-Guo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China
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15
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Krauss L, Rippy MA. Adaptive strategy biases in engineered ecosystems: Implications for plant community dynamics and the provisioning of ecosystem services to people. PEOPLE AND NATURE 2022. [DOI: 10.1002/pan3.10413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Lauren Krauss
- Occoquan Watershed Monitoring Laboratory, Department of Civil and Environmental Engineering Virginia Polytechnic Institute and State University Manassas Virginia USA
| | - Megan A. Rippy
- Occoquan Watershed Monitoring Laboratory, Department of Civil and Environmental Engineering Virginia Polytechnic Institute and State University Manassas Virginia USA
- Center for Coastal Studies Virginia Tech Blacksburg Virginia USA
- Disaster Resilience and Risk Management (DRRM) Blacksburg Virginia USA
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16
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Zhang Y, Zhao C, Yu A, Zhao W, Ren F, Liu Y. The Migration Pattern of Atrazine during the Processes of Water Freezing and Thawing. TOXICS 2022; 10:603. [PMID: 36287883 PMCID: PMC9612270 DOI: 10.3390/toxics10100603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Atrazine, one of the most commonly used herbicides in the world, is of concern because of its frequent occurrence in various water bodies and the potential threat it constitutes to ecosystems. The transport of contaminants in seasonally ice-covered lakes is an important factor affecting the under-ice water environment, and changes in phase during ice growth and melting cause redistribution of atrazine between ice and water phases. To explore the migration pattern of atrazine during freezing and thawing, laboratory simulation experiments involving freezing and thawing were carried out. The effects of ice thickness, freezing temperature, and initial concentration on the migration ability of atrazine during freezing were investigated. The results showed that the relationship between the concentration of atrazine in ice and water during freezing was ice layer < water before freezing < water layer under the ice. Atrazine tended to migrate to under-ice water during the freezing process, and the intensity of migration was positively correlated with the ice thickness, freezing temperature, and initial concentration. During the thawing phase, atrazine trapped in the ice was released into the water in large quantities in the early stages. The first 20% of meltwater concentration was significantly higher than the average concentration in ice, with the highest case being 2.75 times the average concentration in ice. The results reported in this study are a useful reference for planning possible pollution control measures on such lakes during their freeze-thaw process.
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Affiliation(s)
- Yan Zhang
- Correspondence: ; Tel.: +86-135-6259-1712
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17
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Mutzner L, Furrer V, Castebrunet H, Dittmer U, Fuchs S, Gernjak W, Gromaire MC, Matzinger A, Mikkelsen PS, Selbig WR, Vezzaro L. A decade of monitoring micropollutants in urban wet-weather flows: What did we learn? WATER RESEARCH 2022; 223:118968. [PMID: 35988331 DOI: 10.1016/j.watres.2022.118968] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 07/27/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
Urban wet-weather discharges from combined sewer overflows (CSO) and stormwater outlets (SWO) are a potential pathway for micropollutants (trace contaminants) to surface waters, posing a threat to the environment and possible water reuse applications. Despite large efforts to monitor micropollutants in the last decade, the gained information is still limited and scattered. In a metastudy we performed a data-driven analysis of measurements collected at 77 sites (683 events, 297 detected micropollutants) over the last decade to investigate which micropollutants are most relevant in terms of 1) occurrence and 2) potential risk for the aquatic environment, 3) estimate the minimum number of data to be collected in monitoring studies to reliably obtain concentration estimates, and 4) provide recommendations for future monitoring campaigns. We highlight micropollutants to be prioritized due to their high occurrence and critical concentration levels compared to environmental quality standards. These top-listed micropollutants include contaminants from all chemical classes (pesticides, heavy metals, polycyclic aromatic hydrocarbons, personal care products, pharmaceuticals, and industrial and household chemicals). Analysis of over 30,000 event mean concentrations shows a large fraction of measurements (> 50%) were below the limit of quantification, stressing the need for reliable, standard monitoring procedures. High variability was observed among events and sites, with differences between micropollutant classes. The number of events required for a reliable estimate of site mean concentrations (error bandwidth of 1 around the "true" value) depends on the individual micropollutant. The median minimum number of events is 7 for CSO (2 to 31, 80%-interquantile) and 6 for SWO (1 to 25 events, 80%-interquantile). Our analysis indicates the minimum number of sites needed to assess global pollution levels and our data collection and analysis can be used to estimate the required number of sites for an urban catchment. Our data-driven analysis demonstrates how future wet-weather monitoring programs will be more effective if the consequences of high variability inherent in urban wet-weather discharges are considered.
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Affiliation(s)
- Lena Mutzner
- Department of Environmental and Resource Engineering (DTU Sustain), Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kgs., Lyngby, Denmark.
| | - Viviane Furrer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf 8600, Switzerland; Institute of Civil, Environmental and Geomatic Engineering, ETH Zürich, Zurich 8093, Switzerland.
| | - Hélène Castebrunet
- University of Lyon, INSA Lyon, DEEP, EA 7429, 11 rue de la Physique, Villeurbanne Cedex F-69621, France.
| | - Ulrich Dittmer
- Department of Civil Engineering, Institute for Urban Water Management, Technical University Kaiserslautern, Kaiserslautern 67663, Germany.
| | - Stephan Fuchs
- Department of Aquatic Environmental Engineering, Institute for Water and River Basin Management, Karlsruhe Institute of Technology (KIT), Gotthard-Franz-Str. 3, Karlsruhe 76131, Germany.
| | - Wolfgang Gernjak
- ICRA, Catalan Institute for Water Research, Scientific and Technological Park of the University of Girona, H2O Building, Emili Grahit 101, Girona 17003, Spain; ICREA, Catalan Institute for Research and Advanced Studies, Barcelona 08010, Spain.
| | - Marie-Christine Gromaire
- Leesu, École des Ponts ParisTech, Université Paris-Est Créteil. 6-8 avenue Blaise Pascal, Cité Descartes, Marne-la-Vallée cedex 2, 77455, France.
| | | | - Peter Steen Mikkelsen
- Department of Environmental and Resource Engineering (DTU Sustain), Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kgs., Lyngby, Denmark.
| | - William R Selbig
- U.S. Geological Survey, Upper Midwest Water Science Center, Madison 53726, WI, United States.
| | - Luca Vezzaro
- Department of Environmental and Resource Engineering (DTU Sustain), Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kgs., Lyngby, Denmark.
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18
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Spindola Vilela CL, Damasceno TL, Thomas T, Peixoto RS. Global qualitative and quantitative distribution of micropollutants in the deep sea. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119414. [PMID: 35598814 DOI: 10.1016/j.envpol.2022.119414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 04/28/2022] [Accepted: 05/01/2022] [Indexed: 06/15/2023]
Abstract
Micropollutants (MPs) include a wide range of biological disruptors that can be toxic to wildlife and humans at very low concentrations (<1 μg/L). These mainly anthropogenic pollutants have been widely detected in different areas of the planet, including the deep sea, and have impacts on marine life. Because of this potential toxicity, the global distribution, quantity, incidence, and potential impacts of deep-sea MPs were investigated in a systematic review of the literature. The results showed that MPs have reached different zones of the ocean and are more frequently reported in the Northern Hemisphere, where higher concentrations are found. MPs are also concentrated in depths up to 3000 m, where they are also more frequently studied, but also extend deeper than 10,000 m. Potentially toxic metals (PTMs), polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDTs), organotins, and polycyclic aromatic hydrocarbons (PAHs) were identified as the most prevalent and widely distributed MPs at ≥200 m depth. PTMs are widely distributed in the deep sea in high concentrations; aluminum is the most prevalent up to 3000 m depth, followed by zinc and copper. PCBs, organotins, hexachlorocyclohexanes (HCHs), PAHs, and phenols were detected accumulated in both organisms and environmental samples above legislated thresholds or known toxicity levels. Our assessment indicated that the deep sea can be considered a sink for MPs.
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Affiliation(s)
- Caren Leite Spindola Vilela
- Department of General Microbiology, Paulo de Goes Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Taissa Lopes Damasceno
- Department of General Microbiology, Paulo de Goes Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Torsten Thomas
- Centre for Marine Science and Innovation & School of Biological, Earth and Environmental Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Raquel Silva Peixoto
- Department of General Microbiology, Paulo de Goes Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
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19
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Zheng Z, Deletic A, Toe CY, Amal R, Zhang X, Pickford R, Zhou S, Zhang K. Photo-electrochemical oxidation herbicides removal in stormwater: Degradation mechanism and pathway investigation. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129239. [PMID: 35739758 DOI: 10.1016/j.jhazmat.2022.129239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/09/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Although advanced oxidation processes (AOPs) such as photoelectrochemical oxidation (PECO), electrochemical oxidation (ECO) and photocatalytic oxidation (PCO), have shown potential for wastewater treatment, their application in urban stormwater has rarely been studied. This paper explored their major degradation mechanisms and possible degradation pathways of herbicides for stormwater applications (with treatment difficulty compared with wastewater). PECO and ECO showed excellent removal performance for diuron (100 %) and moderate for atrazine (around 35 %) under a relatively low potential (2 V). Superoxide radical (·O2-) has been found to be the dominant reactive species. Besides, there is evidence to indicate that hydroxyl radical (·OH) and free chlorine (·Cl) also support the degradation reactions. Up to 11 possible intermediate products have been identified during both diuron and atrazine degradation processes under PECO operation. Based on the proposed possible degradation pathways, the intermediates presented during PECO are species with further oxidation. As evidenced by the undetected species of more oxidized intermediates for ECO and PCO, some further degradation steps are missing, which demonstrate their lower oxidation capacity leading to incomplete decomposition of stormwater herbicides. Thus, PECO has a great potential to be developed into a passive stormwater degradation system due to its strong oxidation potential.
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Affiliation(s)
- Zhaozhi Zheng
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, New South Wales 2052, Australia.
| | - Ana Deletic
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, New South Wales 2052, Australia; School of Civil and Environmental Engineering, Engineering Faculty, Queensland University of Technology, Queensland 4001, Australia
| | - Cui Ying Toe
- School of Chemical Engineering, University of New South Wales, New South Wales 2052, Australia; School of Engineering, the University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Rose Amal
- School of Chemical Engineering, University of New South Wales, New South Wales 2052, Australia
| | - Xiwang Zhang
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Russell Pickford
- Bioanalytical Mass Spectrometry Facility, University of New South Wales, New South Wales 2052, Australia
| | - Shujie Zhou
- School of Chemical Engineering, University of New South Wales, New South Wales 2052, Australia
| | - Kefeng Zhang
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, New South Wales 2052, Australia
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20
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Autin P, Deshayes S, Lea J, Boisgerault N, Dupré E, Labarrière N, Leguevel R, Fonteneau JF, Blanquart C, Fradin D. The DCMU Herbicide Shapes T-cell Functions By Modulating Micro-RNA Expression Profiles. Front Immunol 2022; 13:925241. [PMID: 35967413 PMCID: PMC9366666 DOI: 10.3389/fimmu.2022.925241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/21/2022] [Indexed: 11/25/2022] Open
Abstract
DCMU [N-(3,4-dichlorophenyl)-N-dimethylurea] or diuron is a widely used herbicide, which can cause adverse effects on human, especially on immune cells, due to their intrinsic properties and wide distribution. These cells are important for fighting not only against virus or bacteria but also against neoplastic cell development. We developed an approach that combines functional studies and miRNA and RNA sequencing data to evaluate the effects of DCMU on the human immune response against cancer, particularly the one carried out by CD8+ T cells. We found that DCMU modulates the expression of miRNA in a dose-dependent manner, leading to a specific pattern of gene expression and consequently to a diminished cytokine and granzyme B secretions. Using mimics or anti-miRs, we identified several miRNA, such as hsa-miR-3135b and hsa-miR-21-5p, that regulate these secretions. All these changes reduce the CD8+ T cells’ cytotoxic activity directed against cancer cells, in vitro and in vivo in a zebrafish model. To conclude, our study suggests that DCMU reduces T-cell abilities, participating thus to the establishment of an environment conducive to cancer development.
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Affiliation(s)
- Pierre Autin
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Sophie Deshayes
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Juliette Lea
- Université de Rennes, ImPACcell Plateform, BIOSIT, Rennes, France
| | - Nicolas Boisgerault
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Emilie Dupré
- Nantes Université, Univ Angers, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France
| | - Nathalie Labarrière
- Nantes Université, Univ Angers, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France
| | - Rémy Leguevel
- Université de Rennes, ImPACcell Plateform, BIOSIT, Rennes, France
| | - Jean-François Fonteneau
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Christophe Blanquart
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Delphine Fradin
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
- *Correspondence: Delphine Fradin,
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21
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Sun X, Liu M, Meng J, Wang L, Chen X, Peng S, Rong X, Wang L. Residue level, occurrence characteristics and ecological risk of pesticides in typical farmland-river interlaced area of Baiyang Lake upstream, China. Sci Rep 2022; 12:12049. [PMID: 35835839 PMCID: PMC9283526 DOI: 10.1038/s41598-022-16088-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 07/04/2022] [Indexed: 11/21/2022] Open
Abstract
Baiyang Lake is the largest freshwater lake in North China, playing an important role in aquatic products production and eco-environment improvement. Traditional organochlorine pesticides were not enough to reflect ecological risk. We performed the high-throughput and non-targeted screening to identify the high-residue and wide-distribution pesticides at farmland-river interlaced area. We firstly reported the residue level and spatio-temporal distribution of typical pesticides in soils and waters (SP1–SP13) near Fuhe river in 2020–2021. The mean recoveries of eight pesticides ranged from 79.4 to 129%. The residues were 0.250–3530 ng/L (water) and 2.79 × 10−3–647 μg/kg dw (soil), respectively. Thiamethoxam was dominant with the high-residue proportion (HRP) of 53–95% (water, HRP > 50%) and 63–97% (soil, HRP > 60%), respectively. Most of pesticides almost have no significant season-change. The risk quotient (RQ) model results showed that although most pesticides have no aquatic risk (RQ < 0.01), carbendazim and propionazole deserved attention. The individual thiamethoxam at nearly half of the sites exhibited high terrestrial risk (RQ, 1.070–1.682), while propiconazole was at medium risk (SP1, SP2, SP8, and SP9) and high risk (SP12). The RQall were in the range of 0.4541–3.327 (earthworm), 0.0239–0.4552 (algae), 0.1094–1.103 (aquatic invertabrates), and 0.1657–1.923 (fish), respectively, so co-residue caused joint toxic effect to aquatic invertebrates.
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Affiliation(s)
- Xiaoli Sun
- Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China
| | - Miao Liu
- Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China
| | - Jianwei Meng
- Hebei Key Laboratory of Mineral Resources and Ecological Environment Monitoring, Hebei Research Center for Geoanalysis, Baoding, 071002, Hebei Province, People's Republic of China
| | - Liping Wang
- Hebei Key Laboratory of Mineral Resources and Ecological Environment Monitoring, Hebei Research Center for Geoanalysis, Baoding, 071002, Hebei Province, People's Republic of China
| | - Xiaoxin Chen
- Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China.
| | - Shan Peng
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China.
| | - Xin Rong
- Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China
| | - Lei Wang
- Hebei Key Laboratory of Mineral Resources and Ecological Environment Monitoring, Hebei Research Center for Geoanalysis, Baoding, 071002, Hebei Province, People's Republic of China.
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22
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LeviRam I, Gross A, Lintern A, Henry R, Schang C, Herzberg M, McCarthy D. Sustainable micropollutant bioremediation via stormwater biofiltration system. WATER RESEARCH 2022; 214:118188. [PMID: 35235884 DOI: 10.1016/j.watres.2022.118188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 02/10/2022] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
Waters contaminated with micropollutants are of environmental and public health concern globally. Stormwater is a significant source of anthropogenic micropollutants to receiving waters. Hence, sustainable stormwater remediation is needed to reduce contamination of waterways. Yet designing sustainable bioremediation solutions, including those targeted to remove micropollutants, is a major scientific challenge. This study aimed to adapt the design of stormwater biofiltration systems, to improve the removal of micropollutants and understand the role of the micropollutant-degrading bacteria in this bioremediation process. We investigated the atrazine removal performance of a prototype biofiltration system, in which the filter media was supplemented with Granulated Activated Carbon (GAC). The prototype biofiltration system completely removed atrazine to below detectable limits, significantly exceeding the GAC's adsorption capacity alone, suggesting other biological processes were present. We showed that atrazine degradation capacity, measured by the kinetics of the trzN gene abundance, was accelerated in the prototype system compared to the standard system (which had no added GAC; 0.8 vs. 0.37 week-1, respectively). Notably, this high level of atrazine removal did not come at the expense of the removal performance of other typical stormwater macropollutants (e.g., nutrients, suspended solids). The prototype biofiltration system showed a proof-of-concept of sustaining microbial remediation of a model micropollutant alongside stormwater macropollutants, which could be used to reduce impacts on receiving waterways and protect our ecosystems and human health.
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Affiliation(s)
- I LeviRam
- Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Israel; Environmental and Public Health Microbiology Laboratory (EPHM Lab), Department of Civil Engineering, Monash University, Clayton, VIC, Australia
| | - A Gross
- Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Israel
| | - A Lintern
- Environmental and Public Health Microbiology Laboratory (EPHM Lab), Department of Civil Engineering, Monash University, Clayton, VIC, Australia
| | - R Henry
- Environmental and Public Health Microbiology Laboratory (EPHM Lab), Department of Civil Engineering, Monash University, Clayton, VIC, Australia
| | - C Schang
- Environmental and Public Health Microbiology Laboratory (EPHM Lab), Department of Civil Engineering, Monash University, Clayton, VIC, Australia
| | - M Herzberg
- Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Israel
| | - D McCarthy
- Environmental and Public Health Microbiology Laboratory (EPHM Lab), Department of Civil Engineering, Monash University, Clayton, VIC, Australia.
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23
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Li X, Hu X, Jiang Y, Wang D, Wang T, Li B. Autonomic behavioral impairment induced by simazine exposure during early life of male mouse is mediated by Lmx1a/Wnt1 pathway. ENVIRONMENTAL TOXICOLOGY 2022; 37:776-788. [PMID: 34936186 DOI: 10.1002/tox.23442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 12/06/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
Simazine is a widely used herbicide and known as an environmental estrogen. Multiple studies have proved simazine can induced the degeneration of dopaminergic neuron resulting in a degenerative disease-like syndrome. Herein, we explored the neurotoxicity of simazine on the dopaminergic nervous system of embryos and weaned offspring during the maternal gestation period or the maternal gestation and lactation periods. We found that simazine disturbed the crucial components expression involved in Lmx1a/Wnt1 pathway of dopaminergic neuron in embryonic and weaned offspring. Furthermore, morphological and behavioral tests performed on weaned male offspring treated by simazine suggested that the grip strength, autonomic exploring, and the space sense ability were weakened, as well as the pathological damage of dopaminergic neuron was clearly observed. But, the same neurotoxicity of simazine is less significantly observed in female offspring. Our findings will provide reliable reference for the determination of environmental limits and new insight into the pathogenesis of nonfamilial neurodegenerative diseases related to environmental risk factors.
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Affiliation(s)
- Xueting Li
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
- Department of Epidemiology, College of Public Health, Harbin Medical University, Harbin, China
| | - Xiaomeng Hu
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
| | - Yujia Jiang
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
| | - Dandan Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
| | - Ting Wang
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
| | - Baixiang Li
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
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24
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Pernak J, Niemczak M, Rzemieniecki T, Marcinkowska K, Praczyk T. Dicationic Herbicidal Ionic Liquids Comprising Two Active Ingredients Exhibiting Different Modes of Action. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:2545-2553. [PMID: 35170944 PMCID: PMC8895401 DOI: 10.1021/acs.jafc.1c07750] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
In the framework of this study, dicationic herbicidal ionic liquids (HILs) containing tetramethylene-1,4-bis(decyldimethylammonium) and dodecylmethylene-1,12-bis(decyldimethylammonium), including two different herbicidal anions exhibiting different modes of action, were synthesized and characterized. One herbicide incorporated into the HILs was a tribenuron-methyl belonging to ALS inhibitors, while the second herbicidal anion was a synthetic auxin that acts as a growth regulator, namely 2,4-dichlorophenoxyacetate (2,4-D), 2-(2,4-dichlorophenoxy)propionate, (2,4-DP), 2,4,5-trichlorophenoxyacetate (2,4,5-T), 4-chloro-2-methylphenoxyacetiate (MCPA), 2-(4-chloro-2-methylphenoxy)propionate (MCPP), and 4-chlorophenoxyacetate (4-CPA). The obtained products were found to be unstable and decomposed, which can be attributed to the presence of an additional methyl group within the sulfonylurea bridge of the tribenuron-methyl. The synthesized HILs exhibited good affinity with polar and semipolar solvents, with ethyl acetate and hexane as the only solvents that did not dissolve the HILs. Greenhouse tests demonstrated that most of the obtained HILs were more effective than the reference herbicide containing tribenuron-methyl. The length of the alkyl chain in the cation also influenced the effectiveness of the HILs. Better effects were observed for dodecylmethylene-1,12-bis(decyldimethylammonium) cations compared to tetramethylene-1,4-bis(decyldimethylammonium). Therefore, the novel dicatonic HILs showed to integrate the advent of the combination of the different herbicides into a single molecule, enhance herbicidal efficacy, and reduce the risk of weed resistance due to the various modes of action of the applied treatment.
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Affiliation(s)
- Juliusz Pernak
- Department
of Chemical Technology, Poznan University
of Technology, Poznan 60-965, Poland
- . Tel: 00148-61-6653682
| | - Michał Niemczak
- Department
of Chemical Technology, Poznan University
of Technology, Poznan 60-965, Poland
| | - Tomasz Rzemieniecki
- Department
of Chemical Technology, Poznan University
of Technology, Poznan 60-965, Poland
| | | | - Tadeusz Praczyk
- Institute
of Plant Protection - National Research Institute, Poznan 60-318, Poland
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25
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Rippy MA, Pierce G, Feldman D, Winfrey B, Mehring AS, Holden PA, Ambrose R, Levin LA. Perceived services and disservices of natural treatment systems for urban stormwater: Insight from the next generation of designers. PEOPLE AND NATURE 2022. [DOI: 10.1002/pan3.10300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Megan A. Rippy
- Occoquan Watershed Monitoring Laboratory, Department of Civil and Environmental Engineering Virginia Polytechnic Institute and State University Manassas VA USA
- Center for Coastal Studies Virginia Tech Blacksburg VA USA
| | - Gregory Pierce
- UCLA Luskin Center for Innovation Luskin School of Public Affairs Los Angeles CA USA
| | - David Feldman
- Department of Urban Planning and Public Policy, School of Social Ecology University of California Irvine CA USA
| | - Brandon Winfrey
- Water Engineering, Department of Civil Engineering Monash University Clayton Vic Australia
| | | | - Patricia A. Holden
- Bren School of Environmental Science and Management University of California Santa Barbara CA USA
| | - Richard. Ambrose
- Department of Environmental Health Sciences, Jonathan and Karen Fielding School of Public Health University of California, Los Angeles Los Angeles CA USA
| | - Lisa A. Levin
- Center for Marine Biodiversity and Conservation and Integrative Oceanography Division, Scripps Institution of Oceanography University of California, San Diego La Jolla CA USA
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26
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Baek SS, Yun D, Pyo J, Kang D, Cho KH, Jeon J. Analysis of micropollutants in a marine outfall using network analysis and decision tree. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150938. [PMID: 34655621 DOI: 10.1016/j.scitotenv.2021.150938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/08/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
The presence of micropollutants (MPs), including pharmaceutical, industrial, and pesticidal compounds, threatens both human health and the aquatic ecosystem. The development and extensive use of new chemicals have also inevitably led to the accumulation of MPs in aquatic environments. Recreational beaches are especially vulnerable to contamination, affecting humans and aquatic animals via the absorption of MPs in water during marine activities (e.g., swimming, sailing, and windsurfing). Additionally, marine outfalls in an urbanized coastal city can cause serious chemical and microbial pollution on recreational beaches, leading to an increase in adverse effects on public health and the ecological system. Therefore, the aim of this study was to, with the use of network and decision tree analyses, identify the features and factors that influence the change in MP concentrations in a marine outfall. These analyses were conducted to inspect the relationship between each MP and its hierarchical structure as well as hydrometeorological variables. Additionally, a risk analysis was conducted in this study in which the MPs were prioritized based on their optimized risk quotient values. During our monitoring of MP concentrations over time at the marine outfall, high concentrations of pharmaceutical and industrial compounds were detected when the tide level was low after rainfall. Furthermore, results of the risk analysis and the prioritization revealed that a total of 18 substances identified in our study posed a risk to the ecosystem; these include major ecotoxicologically hazardous substances such as telmisartan, mevinphos, and methiocarb. Results of the network analysis demonstrated distinct trends for pharmaceutical and industrial substances, whilst those for pesticide compounds were irregular. Additionally, the hierarchical structures for most MPs consisted of rainfall, tide level, and antecedent dry hours; this implies that these factors influence MP dynamics. These findings will be helpful for establishing chemical contamination management plans for recreational beaches in the future.
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Affiliation(s)
- Sang-Soo Baek
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Daeun Yun
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - JongCheol Pyo
- Center for Environmental Data Strategy, Korea Environment Institute, Sejong 30147, Republic of Korea
| | - Daeho Kang
- Department of Environmental Engineering, Changwon National University, Changwondaehak-ro 20, Uichang-gu, Changwon-si, Gyeongsangnam-do 51140, Republic of Korea
| | - Kyung Hwa Cho
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Junho Jeon
- Department of Environmental Engineering, Changwon National University, Changwondaehak-ro 20, Uichang-gu, Changwon-si, Gyeongsangnam-do 51140, Republic of Korea; School of Civil, Environmental and Chemical Engineering, Changwon National University, Changwon, Gyeongsangnamdo 51140, Republic of Korea.
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27
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Mierzejewska E, Urbaniak M, Zagibajło K, Vangronsveld J, Thijs S. The Effect of Syringic Acid and Phenoxy Herbicide 4-chloro-2-methylphenoxyacetic acid (MCPA) on Soil, Rhizosphere, and Plant Endosphere Microbiome. FRONTIERS IN PLANT SCIENCE 2022; 13:882228. [PMID: 35712561 PMCID: PMC9195007 DOI: 10.3389/fpls.2022.882228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 05/02/2022] [Indexed: 05/07/2023]
Abstract
The integration of phytoremediation and biostimulation can improve pollutant removal from the environment. Plant secondary metabolites (PSMs), which are structurally related to xenobiotics, can stimulate the presence of microbial community members, exhibiting specialized functions toward detoxifying, and thus mitigating soil toxicity. In this study, we evaluated the effects of enrichment of 4-chloro-2-methylphenoxyacetic acid (MCPA) contaminated soil (unplanted and zucchini-planted) with syringic acid (SA) on the bacterial community structure in soil, the rhizosphere, and zucchini endosphere. Additionally, we measured the concentration of MCPA in soil and fresh biomass of zucchini. The diversity of bacterial communities differed significantly between the studied compartments (i.e., unplanted soil, rhizospheric soil, and plant endosphere: roots or leaves) and between used treatments (MCPA or/and SA application). The highest diversity indices were observed for unplanted soil and rhizosphere. Although the lowest diversity was observed among leaf endophytes, this community was significantly affected by MCPA or SA: the compounds applied separately favored the growth of Actinobacteria (especially Pseudarthrobacter), while their simultaneous addition promoted the growth of Firmicutes (especially Psychrobacillus). The application of MCPA + SA together lead also to enhanced growth of Pseudomonas, Burkholderia, Sphingomonas, and Pandoraea in the rhizosphere, while SA increased the occurrence of Pseudomonas in leaves. In addition, SA appeared to have a positive influence on the degradative potential of the bacterial communities against MCPA: its addition, followed by zucchini planting, significantly increased the removal of the herbicide (50%) from the soil without affecting, neither positively nor negatively, the plant growth.
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Affiliation(s)
- Elżbieta Mierzejewska
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
- *Correspondence: Elżbieta Mierzejewska,
| | - Magdalena Urbaniak
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Łódź, Łódź, Poland
| | - Katarzyna Zagibajło
- Food Safety Laboratory, Research Institute of Horticulture, Skierniewice, Poland
| | - Jaco Vangronsveld
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Lublin, Poland
| | - Sofie Thijs
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
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28
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Olisah C, Human LRD, Rubidge G, Adams JB. Organophosphate pesticides sequestered in tissues of a seagrass species - Zostera capensis from a polluted watershed. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 300:113657. [PMID: 34509819 DOI: 10.1016/j.jenvman.2021.113657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/22/2021] [Accepted: 08/28/2021] [Indexed: 06/13/2023]
Abstract
Organophosphate pesticides (OPPs) are persistent in the environment, but little information is available on their bioaccumulation in seagrass. In this study, the seagrass - Zostera capensis was collected from Swartkops Estuary in South Africa to investigate the bioaccumulation of OPPs from contaminated sediments and the water column. This plant was chosen because it grows abundantly in the estuary's intertidal zone, making it a viable phytoremediator in the urban environment. Extraction was performed by the QuEChERS method followed by GC-MS analysis. The mean concentration of ∑OPPs ranged from 0.01 to 0.03 μg/L for surface water; 6.20-13.35 μg/kg dw for deep-rooted sediments; 18.79-37.75 μg/kg dw for leaf tissues and 12.14-39.80 μg/kg dw for root tissues of Z. capensis. The biota-sediment accumulation factors (BSAFs) were greater than one, indicating the potential for Z. capensis to bioaccumulate and intercept the targeted pesticides. A weak insignificant correlation observed between log BSAFs and log Kow indicates that the bioaccumulation of OPPs in tissues of Z. capensis were not dependent on the Kow. Eight of the selected pesticides had root-leaf translocation factors (TFr-l) greater than 1, indicating that Z. capensis can transport these chemicals from roots to leaves. The results from this study implies that this plant species can clean up OPP contamination in the environment.
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Affiliation(s)
- Chijioke Olisah
- DSI/NRF Research Chair, Shallow Water Ecosystems, Nelson Mandela University, Port Elizabeth, South Africa; Department of Botany, Nelson Mandela University, Port Elizabeth, South Africa; Institute for Coastal and Marine Research (CMR), Nelson Mandela University, Port Elizabeth, South Africa; Department of Chemistry, Nelson Mandela University, Port Elizabeth, South Africa.
| | - Lucienne R D Human
- Institute for Coastal and Marine Research (CMR), Nelson Mandela University, Port Elizabeth, South Africa; South African Environmental Observation Network (SAEON) Elwandle Coastal Node Nelson Mandela University, Port Elizabeth, South Africa
| | - Gletwyn Rubidge
- Department of Chemistry, Nelson Mandela University, Port Elizabeth, South Africa
| | - Janine B Adams
- DSI/NRF Research Chair, Shallow Water Ecosystems, Nelson Mandela University, Port Elizabeth, South Africa; Department of Botany, Nelson Mandela University, Port Elizabeth, South Africa; Institute for Coastal and Marine Research (CMR), Nelson Mandela University, Port Elizabeth, South Africa
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Duan Y, Sedlak DL. An electrochemical advanced oxidation process for the treatment of urban stormwater. WATER RESEARCH X 2021; 13:100127. [PMID: 34927040 PMCID: PMC8649961 DOI: 10.1016/j.wroa.2021.100127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 06/14/2023]
Abstract
Recharge of urban stormwater has often been limited by the high cost of land and concerns about contamination of groundwater. To provide a possible solution, we developed an electrochemical advanced oxidation system (UV/H2O2) that is compatible with high-capacity stormwater recharge systems (e.g., drywells). The system employed an air-diffusion cathode to generate a H2O2 stock solution (i.e., typically around 600 mM) prior to the storm event. The H2O2 stock solution was then metered into stormwater and converted into hydroxyl radical (•OH) by an ultraviolet lamp. The energy consumption for H2O2 generation was optimized by adjusting the applied current density and adding an inert salt (e.g., Na2SO4) to stormwater. H2O2 in the stock solution was unstable. By mixing the basic H2O2 containing catholyte and the acidic anolyte, the stability increased, enabling generation of the H2O2 stock solution up to three days prior the storm event with loss of less than 20% of the H2O2. Lab-scale experiments and a kinetic model were used to assess the feasibility of the full-scale advanced oxidation system. System performance decreased at elevated concentrations of dissolved organic carbon in stormwater, due to enhanced light reflection and backscattering at the water-air interface in the UV reactor, competition for UV light absorption with H2O2 and the tendency of organic matter to act as a •OH scavenger. The proposed system can be incorporated into drywells to remove greater than 90% of trace organic contaminants under typical operating conditions. The electrical energy per order of the system is estimated to range from 0.5 to 2 kWh/m3, depending on the dissolved organic carbon concentration.
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Nowell LH, Moran PW, Bexfield LM, Mahler BJ, Van Metre PC, Bradley PM, Schmidt TS, Button DT, Qi SL. Is there an urban pesticide signature? Urban streams in five U.S. regions share common dissolved-phase pesticides but differ in predicted aquatic toxicity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 793:148453. [PMID: 34182445 DOI: 10.1016/j.scitotenv.2021.148453] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/01/2021] [Accepted: 06/10/2021] [Indexed: 05/24/2023]
Abstract
Pesticides occur in urban streams globally, but the relation of occurrence to urbanization can be obscured by regional differences. In studies of five regions of the United States, we investigated the effect of region and urbanization on the occurrence and potential toxicity of dissolved pesticide mixtures. We analyzed 225 pesticide compounds in weekly discrete water samples collected during 6-12 weeks from 271 wadable streams; development in these basins ranged from undeveloped to highly urbanized. Sixteen pesticides were consistently detected in 16 urban centers across the five regions-we propose that these pesticides comprise a suite of urban signature pesticides (USP) that are all common in small U.S. urban streams. These USPs accounted for the majority of summed maximum pesticide concentrations at urban sites within each urban center. USP concentrations, mixture complexity, and potential toxicity increased with the degree of urbanization in the basin. Basin urbanization explained the most variability in multivariate distance-based models of pesticide profiles, with region always secondary in importance. The USPs accounted for 83% of pesticides in the 20 most frequently occurring 2-compound unique mixtures at urban sites, with carbendazim+prometon the most common. Although USPs were consistently detected in all regions, detection frequencies and concentrations varied by region, conferring differences in potential aquatic toxicity. Potential toxicity was highest for invertebrates (benchmarks exceeded in 51% of urban streams), due most often to the neonicotinoid insecticide imidacloprid and secondarily to organophosphate insecticides and fipronil. Benchmarks were rarely exceeded in urban streams for plants (at 3% of sites) or fish (<1%). We propose that the USPs identified here would make logical core (nonexclusive) constituents for monitoring dissolved pesticides in U.S. urban streams, and that unique mixtures containing imidacloprid, fipronil, and carbendazim are priority candidates for mixtures toxicity testing.
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Affiliation(s)
- Lisa H Nowell
- U.S. Geological Survey, California Water Science Center, Placer Hall, 6000 J St., Sacramento, CA 95819, United States of America.
| | - Patrick W Moran
- U.S. Geological Survey, Washington Water Science Center, 934 Broadway, Suite 300, Tacoma, WA 98402, United States of America
| | - Laura M Bexfield
- U.S. Geological Survey, New Mexico Water Science Center, 6700 Edith Blvd NE, Bldg E, Albuquerque, NM 87113, United States of America
| | - Barbara J Mahler
- U.S. Geological Survey, Oklahoma-Texas Water Science Center, 1505 Ferguson Lane, Austin, TX 78754, United States of America
| | - Peter C Van Metre
- U.S. Geological Survey, Oklahoma-Texas Water Science Center, 1505 Ferguson Lane, Austin, TX 78754, United States of America
| | - Paul M Bradley
- U.S. Geological Survey, South Atlantic Water Science Center, 720 Gracern Rd., Suite 129, Columbia, SC 29210, United States of America
| | - Travis S Schmidt
- U.S. Geological Survey, Wyoming-Montana Water Science Center, 3162 Bozeman Ave., Helena, MT 59601, United States of America
| | - Daniel T Button
- U.S. Geological Survey, Ohio-Kentucky-Indiana Water Science Center, 6460 Busch Blvd., Suite 100, Columbus, OH 43229, United States of America
| | - Sharon L Qi
- U.S. Geological Survey, Cascades Volcano Laboratory, 1300 SE Cardinal Ct, Vancouver, WA 98683, United States of America
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Xing Y, Kang X, Zhang S, Men Y. Specific phenotypic, genomic, and fitness evolutionary trajectories toward streptomycin resistance induced by pesticide co-stressors in Escherichia coli. ISME COMMUNICATIONS 2021; 1:39. [PMID: 37938677 PMCID: PMC9723568 DOI: 10.1038/s43705-021-00041-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 07/28/2021] [Accepted: 08/05/2021] [Indexed: 04/27/2023]
Abstract
To explore how co-occurring non-antibiotic environmental stressors affect evolutionary trajectories toward antibiotic resistance, we exposed susceptible Escherichia coli K-12 populations to environmentally relevant levels of pesticides and streptomycin for 500 generations. The coexposure substantially changed the phenotypic, genotypic, and fitness evolutionary trajectories, resulting in much stronger streptomycin resistance (>15-fold increase) of the populations. Antibiotic target modification mutations in rpsL and rsmG, which emerged and dominated at late stages of evolution, conferred the strong resistance even with less than 1% abundance, while the off-target mutations in nuoG, nuoL, glnE, and yaiW dominated at early stages only led to mild resistance (2.5-6-fold increase). Moreover, the strongly resistant mutants exhibited lower fitness costs even without the selective pressure and had lower minimal selection concentrations than the mildly resistant ones. Removal of the selective pressure did not reverse the strong resistance of coexposed populations at a later evolutionary stage. The findings suggest higher risks of the selection and propagation of strong antibiotic resistance in environments potentially impacted by antibiotics and pesticides.
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Affiliation(s)
- Yue Xing
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, USA
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Xiaoxi Kang
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, USA
| | - Siwei Zhang
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Yujie Men
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, USA.
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
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Oxidative Treatments of Pesticides in Rainwater Runoff by HOCl, O3, and O3/H2O2: Effects of pH, Humic Acids and Inorganic Matters. SEPARATIONS 2021. [DOI: 10.3390/separations8070101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study systematically investigated the oxidative treatment of five selected pesticides, alachlor (ALA), carbendazim (CAR), diuron (DIU), pyrimethanil (PYR), and tebuconazole (TEB), by comparing their relative reactivities as a function of three different oxidative treatment processes (i.e., chlorine (HOCl), ozone (O3), and ozone/hydrogen peroxide (O3/H2O2)) under various oxidant dosages, reaction times, and pH conditions. For oxidative treatment, pesticide standards were spiked into rainwater. The removal efficiency of the selected pesticides varied considerably depending on the oxidative treatment processes. HOCl, O3, and O3/H2O2 treatments were highly effective at eliminating CAR (>80%) and PYR (>99%), while they were not significantly effective in removing TEB (<20%). In the case of DIU, HOCl (81%) was shown to be more effective than O3 (24%) and O3/H2O2 (49%). The removal efficiency of ALA was in the order of O3/H2O2 (49%) > O3 (20%) > HOCl (8.5%). The effect of increasing the solution pH from 5.0 to 9.0 on pesticide degradation varied between the oxidative treatment processes. Additionally, NH4+, NO2−, and humic acid in rainwater significantly inhibited pesticide degradation.
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33
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Synthetic auxin-based double salt ionic liquids as herbicides with improved physicochemical properties and biological activity. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116452] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Da Costa Soares IC, Oriol R, Ye Z, Martínez-Huitle CA, Cabot PL, Brillas E, Sirés I. Photoelectro-Fenton treatment of pesticide triclopyr at neutral pH using Fe(III)-EDDS under UVA light or sunlight. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:23833-23848. [PMID: 33175352 DOI: 10.1007/s11356-020-11421-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
One of the main challenges of electrochemical Fenton-based processes is the treatment of organic pollutants at near-neutral pH. As a potential approach to this problem, this work addresses the use of a low content of soluble chelated metal catalyst, formed between Fe(III) and ethylenediamine-N,N'-disuccinic (EDDS) acid (1:1), to degrade the herbicide triclopyr in 0.050 M Na2SO4 solutions at pH 7.0 by photoelectro-Fenton with UVA light or sunlight (PEF and SPEF, respectively). Comparison with electro-Fenton treatments revealed the crucial role of the photo-Fenton-like reaction, since this promoted the production of soluble Fe(II) that enhanced the pesticide removal. Hydroxyl radicals formed at the anode surface and in the bulk were the main oxidants. A boron-doped diamond (BDD) anode yielded a greater mineralization than an IrO2-based one, at the expense of reduced cost-effectiveness. The effect of catalyst concentration and current density on the performance of PEF with BDD was examined. The PEF trials in 0.25 mM Na2SO4 + 0.35 mM NaCl medium showed a large influence of generated active chlorine as oxidant, being IrO2 more suitable than RuO2 and BDD. In SPEF with BDD, the higher light intensity from solar photons accelerated the removal of the catalyst and triclopyr, with small effect on mineralization. A plausible route for the herbicide degradation by Fe(III)-EDDS-catalyzed PEF and SPEF is finally proposed based on detected byproducts: three heteroaromatic and four linear N-aliphatic compounds, formamide, and tartronic and oxamic acids.
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Affiliation(s)
- Izabelle C Da Costa Soares
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
- Laboratório de Eletroquímica Ambiental e Aplicada, Instituto de Química, Universidade Federal do Rio Grande do Norte, Lagoa Nova, Natal, RN, 59072-900, Brazil
| | - Roger Oriol
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Zhihong Ye
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
- Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Carlos A Martínez-Huitle
- Laboratório de Eletroquímica Ambiental e Aplicada, Instituto de Química, Universidade Federal do Rio Grande do Norte, Lagoa Nova, Natal, RN, 59072-900, Brazil
| | - Pere L Cabot
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain.
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Zheng Z, Zhang K, Toe CY, Amal R, Zhang X, McCarthy DT, Deletic A. Stormwater herbicides removal with a solar-driven advanced oxidation process: A feasibility investigation. WATER RESEARCH 2021; 190:116783. [PMID: 33387957 DOI: 10.1016/j.watres.2020.116783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/14/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
The solar driven advanced oxidation process (AOP) has the potential to be developed as a passive stormwater post-treatment method. Despite its widespread studies in wastewater treatment, the applicability of the process for micropollutant removal in stormwater (which has very different chemical properties from wastewater) is still unknown. This paper investigated the feasibility of three different AOP processes for the degradation of two herbicides (diuron and atrazine) in pre-treated stormwater: (i) photoelectrochemical oxidation (PECO), (ii) electrochemical oxidation (ECO), and (iii) photocatalytic oxidation (PCO). The durability of different anode materials, the effects of catalyst loading, and solar photo- and thermal impacts under different applied voltages were studied. Boron-doped diamond (BDD) was found to be the most durable anode material compared to carbon fiber and titanium foil for long-term operation. Due to the very low electroconductivity of stormwater, a high voltage was required, causing severe oxidation of the carbon fiber material. PECO achieved the best degradation results compared to ECO and PCO, with over 90% degradation of both herbicides in 2 h under 5 V, following a first-order decay process (with a half-life value of 0.40 h for diuron and 0.58 h for atrazine). The voltage increase had a positive impact on the oxidation processes, with 5 V found to be the optimal applied voltage, while catalyst loading had a negligible effect. Interestingly, the solar thermal effect plays a dominant role in enhancing the performance of the PECO process, which indicates the potential of integrating a photovoltaic chamber with a PECO system to harness both the light and heat of solar energy for stormwater treatment.
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Affiliation(s)
- Zhaozhi Zheng
- School of Civil and Environmental Engineering, University of New South Wales, NSW 2052, Australia.
| | - Kefeng Zhang
- School of Civil and Environmental Engineering, University of New South Wales, NSW 2052, Australia
| | - Cui Ying Toe
- School of Chemical Engineering, University of New South Wales, NSW 2052, Australia
| | - Rose Amal
- School of Chemical Engineering, University of New South Wales, NSW 2052, Australia
| | - Xiwang Zhang
- Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
| | - David T McCarthy
- Environmental and Public Health Microbiology Laboratory, Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Ana Deletic
- School of Civil and Environmental Engineering, University of New South Wales, NSW 2052, Australia
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Morton PA, Cassidy R, Floyd S, Doody DG, McRoberts WC, Jordan P. Approaches to herbicide (MCPA) pollution mitigation in drinking water source catchments using enhanced space and time monitoring. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 755:142827. [PMID: 33097257 DOI: 10.1016/j.scitotenv.2020.142827] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/24/2020] [Accepted: 09/30/2020] [Indexed: 06/11/2023]
Abstract
Freshwater occurrences of the selective acid herbicide 2-methyl-4-chloro-phenoxyacetic acid (MCPA) are an ongoing regulatory and financial issue for water utility industries as the number and magnitude of detections increase, particularly in surface water catchments. Assessments for mitigating pesticide pollution in catchments used as drinking water sources require a combination of catchment-based and water treatment solutions, but approaches are limited by a lack of empirical data. In this study, an enhanced spatial (11 locations) and temporal (7-hourly to daily sampling) monitoring approach was employed to address these issues in an exemplar surface water source catchment (384 km2). The spatial sampling revealed that MCPA was widespread, with occurrences above the 0.1 μg L-1 threshold for a single pesticide being highly positively correlated to sub-catchments with higher proportions of 'Improved Grassland' land use (r = 0.84). These data provide a strong foundation for targeting catchment-based mitigation solutions and also add to the debate on the ecosystems services provided by such catchments. Additionally, of the 999 temporal samples taken over 12 months from the catchment outlet, 25% were above the drinking water threshold of 0.1 μg L-1. This prevalence of high concentrations presents costly problems for source water treatment. Using these data, abstraction shutdowns were simulated for five scenarios using hydrometeorological data to explore the potential to avoid intake of high MCPA concentrations. The scenarios stopped abstraction for 4.2-9.3% of the April-October period and reduced intake of water containing over 0.1 μg L-1 of MCPA by 16-31%. This represents an important development for real-time proxy assessments for water abstraction in the absence of more direct pesticide monitoring data.
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Affiliation(s)
- Phoebe A Morton
- Agri-Environment Branch, Agri-Food and Biosciences Institute, Belfast, UK.
| | - Rachel Cassidy
- Agri-Environment Branch, Agri-Food and Biosciences Institute, Belfast, UK
| | - Stewart Floyd
- Food Research Branch, Agri-Food and Biosciences Institute, Belfast, UK
| | - Donnacha G Doody
- Agri-Environment Branch, Agri-Food and Biosciences Institute, Belfast, UK
| | - W Colin McRoberts
- Food Research Branch, Agri-Food and Biosciences Institute, Belfast, UK
| | - Philip Jordan
- School of Geography and Environmental Sciences, Ulster University, Coleraine, UK
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37
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Pesticide application, educational treatment and infectious respiratory diseases: A mechanistic model with two impulsive controls. PLoS One 2020; 15:e0243048. [PMID: 33270758 PMCID: PMC7714192 DOI: 10.1371/journal.pone.0243048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 11/13/2020] [Indexed: 11/25/2022] Open
Abstract
In this paper, we develop and analyze an SIS-type epidemiological-mathematical model of the interaction between pesticide use and infectious respiratory disease transmission for investigating the impact of pesticide intoxication on the spread of these types of diseases. We further investigate the role of educational treatment for appropriate pesticide use on the transmission dynamics. Two impulsive control events are proposed: pesticide use and educational treatment. From the proposed model, it was obtained that the rate of forgetfulness towards educational treatment is a determining factor for the reduction of intoxicated people, as well as for the reduction of costs associated with educational interventions. To get reduced intoxications, the population’s fraction to which is necessary to apply the educational treatment depends on its individual effectiveness level and the educational treatments’ forgetfulness rate. In addition, the turnover of agricultural workers plays a fundamental role in the dynamics of agrotoxic use, particularly in the application of educational treatment. For illustration, a flu-like disease with a basic reproductive number below the epidemic threshold of 1.0 is shown can acquire epidemic potential in a population at risk of pesticide exposure. Hence, our findings suggest that educational treatment targeting pesticide exposure is an effective tool to reduce the transmission rate of an infectious respiratory disease in a population exposed to the toxic substance.
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38
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Hu K, Torán J, López-García E, Barbieri MV, Postigo C, de Alda ML, Caminal G, Sarrà M, Blánquez P. Fungal bioremediation of diuron-contaminated waters: Evaluation of its degradation and the effect of amendable factors on its removal in a trickle-bed reactor under non-sterile conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140628. [PMID: 32652358 DOI: 10.1016/j.scitotenv.2020.140628] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/25/2020] [Accepted: 06/28/2020] [Indexed: 06/11/2023]
Abstract
The occurrence of the extensively used herbicide diuron in the environment poses a severe threat to the ecosystem and human health. Four different ligninolytic fungi were studied as biodegradation candidates for the removal of diuron. Among them, T. versicolor was the most effective species, degrading rapidly not only diuron (83%) but also the major metabolite 3,4-dichloroaniline (100%), after 7-day incubation. During diuron degradation, five transformation products (TPs) were found to be formed and the structures for three of them are tentatively proposed. According to the identified TPs, a hydroxylated intermediate 3-(3,4-dichlorophenyl)-1-hydroxymethyl-1-methylurea (DCPHMU) was further metabolized into the N-dealkylated compounds 3-(3,4-dichlorophenyl)-1-methylurea (DCPMU) and 3,4-dichlorophenylurea (DCPU). The discovery of DCPHMU suggests a relevant role of hydroxylation for subsequent N-demethylation, helping to better understand the main reaction mechanisms of diuron detoxification. Experiments also evidenced that degradation reactions may occur intracellularly and be catalyzed by the cytochrome P450 system. A response surface method, established by central composite design, assisted in evaluating the effect of operational variables in a trickle-bed bioreactor immobilized with T. versicolor on diuron removal. The best performance was obtained at low recycling ratios and influent flow rates. Furthermore, results indicate that the contact time between the contaminant and immobilized fungi plays a crucial role in diuron removal. This study represents a pioneering step forward amid techniques for bioremediation of pesticides-contaminated waters using fungal reactors at a real scale.
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Affiliation(s)
- Kaidi Hu
- Departament d'Enginyeria Química, Biològica i Ambiental, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Josefina Torán
- Departament d'Enginyeria Química, Biològica i Ambiental, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Ester López-García
- Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA), Spanish Council for Scientific Research (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Maria Vittoria Barbieri
- Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA), Spanish Council for Scientific Research (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Cristina Postigo
- Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA), Spanish Council for Scientific Research (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Miren López de Alda
- Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA), Spanish Council for Scientific Research (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Gloria Caminal
- Institut de Química Avançada de Catalunya (IQAC), CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Montserrat Sarrà
- Departament d'Enginyeria Química, Biològica i Ambiental, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
| | - Paqui Blánquez
- Departament d'Enginyeria Química, Biològica i Ambiental, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
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Selinske MJ, Garrard GE, Gregg EA, Kusmanoff AM, Kidd LR, Cullen MT, Cooper M, Geary WL, Hatty MA, Hames F, Kneebone S, McLeod EM, Ritchie EG, Squires ZE, Thomas J, Willcock MAW, Blair S, Bekessy SA. Identifying and prioritizing human behaviors that benefit biodiversity. CONSERVATION SCIENCE AND PRACTICE 2020. [DOI: 10.1111/csp2.249] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Matthew J. Selinske
- ICON Science Research Group, School of Global, Urban and Social StudiesRMIT University Melbourne Victoria Australia
- The Australian Government's National Environmental Science Program, Threatened Species Recovery Hub St Lucia Queensland Australia
| | - Georgia E. Garrard
- ICON Science Research Group, School of Global, Urban and Social StudiesRMIT University Melbourne Victoria Australia
- The Australian Government's National Environmental Science Program, Threatened Species Recovery Hub St Lucia Queensland Australia
| | - Emily A. Gregg
- ICON Science Research Group, School of Global, Urban and Social StudiesRMIT University Melbourne Victoria Australia
- The Australian Government's National Environmental Science Program, Threatened Species Recovery Hub St Lucia Queensland Australia
| | - Alexander M. Kusmanoff
- ICON Science Research Group, School of Global, Urban and Social StudiesRMIT University Melbourne Victoria Australia
- The Australian Government's National Environmental Science Program, Threatened Species Recovery Hub St Lucia Queensland Australia
| | - Lindall R. Kidd
- ICON Science Research Group, School of Global, Urban and Social StudiesRMIT University Melbourne Victoria Australia
- The Australian Government's National Environmental Science Program, Threatened Species Recovery Hub St Lucia Queensland Australia
- BirdLife Australia Carlton Victoria Australia
| | | | - Michelle Cooper
- Biodiversity Division, Department of EnvironmentLand, Water & Planning East Melbourne Victoria Australia
| | - William L. Geary
- Biodiversity Division, Department of EnvironmentLand, Water & Planning East Melbourne Victoria Australia
| | - Melissa A. Hatty
- BehaviourWorks AustraliaMonash Sustainable Development Institute, Monash University Clayton Victoria Australia
| | - Fern Hames
- Arthur Rylah Institute for Environmental ResearchDepartment of Environment, Land, Water and Planning Heidelberg Victoria Australia
| | - Sarah Kneebone
- BehaviourWorks AustraliaMonash Sustainable Development Institute, Monash University Clayton Victoria Australia
| | - Emily M. McLeod
- Department of Wildlife Conservation and ScienceZoos Victoria Parkville Victoria Australia
| | - Euan G. Ritchie
- Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin University Geelong Victoria Australia
| | - Zoe E. Squires
- Biodiversity Division, Department of EnvironmentLand, Water & Planning East Melbourne Victoria Australia
| | | | | | - Sera Blair
- Victoria National Parks Association Carlton Victoria Australia
| | - Sarah A. Bekessy
- ICON Science Research Group, School of Global, Urban and Social StudiesRMIT University Melbourne Victoria Australia
- The Australian Government's National Environmental Science Program, Threatened Species Recovery Hub St Lucia Queensland Australia
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40
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Xing Y, Wu S, Men Y. Exposure to Environmental Levels of Pesticides Stimulates and Diversifies Evolution in Escherichia coli toward Higher Antibiotic Resistance. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:8770-8778. [PMID: 32551597 DOI: 10.1021/acs.est.0c01155] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Antibiotic resistance is one of the most challenging issues in public health. Antibiotics have been increasingly used not only for humans and animals but also for crop protection as pesticides. Thus, antibiotics often coexist with pesticides in some environments. To investigate the effects of the co-occurring, nonantibiotic pesticides on the development of antibiotic resistance, we conducted long-term exposure experiments using an Escherichia coli K-12 model strain. The results reveal that (1) the exposure to pesticides (in mg/L) alone led to the emergence of mutants with significantly higher resistance to streptomycin; (2) the exposure to pesticides (in μg/L) together with a subinhibitory level (in high μg/L) of ampicillin synergistically stimulated the selection of ampicillin resistance and the cross-resistance to other antibiotics (i.e., ciprofloxacin, chloramphenicol, and tetracycline). Distinct and diversified genetic mutations emerged in the resistant mutants selected from the coexposure to both pesticides and ampicillin. The genetic mutations likely caused a holistic transcriptional regulation (e.g., biofilm formation, oxidative stress defense) when grown under antibiotic stress and led to increased antibiotic resistance. Together, these findings provide important fundamental insights into the development of antibiotic resistance and the resistance mechanisms under environmentally relevant conditions where antibiotics and nonantibiotic micropollutants coexist.
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Affiliation(s)
- Yue Xing
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois United States
- Department of Chemical and Environmental Engineering, University of California, Riverside, California United States
| | - Shuaiqi Wu
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois United States
| | - Yujie Men
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois United States
- Department of Chemical and Environmental Engineering, University of California, Riverside, California United States
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Sun Y, Cao M, Wan Y, Wang H, Liu J, Pan F, He W, Huang H, He Z. Spatial variation of 2,4-D and MCPA in tap water and groundwater from China and their fate in source, treated, and tap water from Wuhan, Central China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 727:138691. [PMID: 32498189 DOI: 10.1016/j.scitotenv.2020.138691] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/26/2020] [Accepted: 04/12/2020] [Indexed: 05/09/2023]
Abstract
Data on chlorophenoxy herbicides (CPHs) in drinking water from China are scarce. This study was designed to describe the occurrence of CPHs in drinking water in China. In June 2019, drinking water samples including 789 tap water and 95 groundwater samples were collected from 31 provinces in mainland China and Hong Kong. Raw source, treated, and tap water samples (n = 20, 20, and 170, respectively) in Wuhan, Central China were also analyzed. 2,4-dichlorophenoxyacetic acid (2,4-D) and 2-methyl-4-chlorophenoxyacetic acid (MCPA) were found in 71.2% and 74.9% of the samples nationwide, respectively. The cumulative concentration of CPHs (ΣCPHs) in tap water in China was up to 125 ng/L (median: 1.38 ng/L), and regional variations were found for ΣCPHs. The highest median ΣCPHs (3.95 ng/L) was found in Northeast China, followed by Central (3.40), South (2.71), East (2.43), Southwest (1.58), North (0.42), and Northwest China (0.30). The median ΣCPHs in groundwater was approximately five times lower than that in tap water. In addition, ΣCPHs were found in all the raw source water samples collected in Wuhan, Central China (median: 6.69 ng/L, range: 2.66-43.1 ng/L). The removal of 2,4-D and MCPA during conventional drinking water treatment was not efficient, removing approximately 0.91% and 17.4%, respectively. In a water plant with advanced treatment, they were efficiently removed. Seasonal variations were found in ΣCPHs in tap water from Wuhan, with the highest found in July (median: 21.2 ng/L), and the lowest in October (1.96 ng/L). The intake of CPHs via water ingestion was estimated as below 5 ng/kg-bw/day, much lower than the reference doses for 2,4-D (5 μg/kg-bw/day) and MCPA (4 μg/kg-bw/day). This is the first study to demonstrate the fate of CPHs during drinking water treatment and seasonal variations of CPHs in water from Wuhan, China. Moreover, this study provides an overview of ΣCPHs in tap water for many areas in China.
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Affiliation(s)
- Yanfeng Sun
- Institute of Environmental Health, Wuhan Centers for Disease Control and Prevention, Wuhan, Hubei 430024, PR China
| | - Meiling Cao
- Institute of Environmental Health, Wuhan Centers for Disease Control and Prevention, Wuhan, Hubei 430024, PR China
| | - Yanjian Wan
- Institute of Environmental Health, Wuhan Centers for Disease Control and Prevention, Wuhan, Hubei 430024, PR China.
| | - Huaiji Wang
- Institute of Environmental Health, Wuhan Centers for Disease Control and Prevention, Wuhan, Hubei 430024, PR China
| | - Junling Liu
- Institute of Environmental Health, Wuhan Centers for Disease Control and Prevention, Wuhan, Hubei 430024, PR China
| | - Feng Pan
- Institute of Environmental Health, Wuhan Centers for Disease Control and Prevention, Wuhan, Hubei 430024, PR China
| | - Wenlei He
- Guizhou Institute of Labor Protection Science and Technology, Guiyang, Guizhou 550081, PR China
| | - He Huang
- Principal's Office, Guizhou Normal University, Guiyang, Guizhou 550025, PR China
| | - Zhenyu He
- Institute of Environmental Health, Wuhan Centers for Disease Control and Prevention, Wuhan, Hubei 430024, PR China.
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Meftaul I, Venkateswarlu K, Dharmarajan R, Annamalai P, Megharaj M. Movement and Fate of 2,4-D in Urban Soils: A Potential Environmental Health Concern. ACS OMEGA 2020; 5:13287-13295. [PMID: 32548515 PMCID: PMC7288697 DOI: 10.1021/acsomega.0c01330] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 05/12/2020] [Indexed: 05/13/2023]
Abstract
The fate and movement of 2,4-dichlorophenoxyacetic acid (2,4-D), in terms of sorption-desorption and leaching potential, were evaluated in urban soils following the batch experimental method. The sorption kinetics of 2,4-D in soils followed both "fast" and "slow" sorption processes that could be well described by a pseudo-second-order kinetics model, suggesting that 2,4-D was partitioned into soil organic matter and clay surfaces, and eventually diffused into soil micropores. The sorption isotherms were linear, following both Langmuir and Freundlich models. Partially decomposed or undecomposed organic matter present in urban soils decreased sorption and increased desorption of 2,4-D. Also, sorption of 2,4-D increased with an increase in the contents of clay and Al and Fe oxides, whereas sand and alkaline pH increased the desorption process. The lower calculated K d values suggest that 2,4-D is highly mobile in urban soils than in agricultural soils. The calculated values of groundwater ubiquity score, leachability index, and hysteresis index indicated that the herbicide is highly prone to leach out from surface soil to groundwater which might affect the quality of potable water. The present study clearly suggests that 2,4-D must be judiciously applied in the urban areas in order to minimize the potential health and environmental risks.
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Affiliation(s)
- Islam
Md Meftaul
- Global
Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales 2308, Australia
- Department
of Agricultural Chemistry, Sher-e-Bangla
Agricultural University, Dhaka 1207, Bangladesh
| | - Kadiyala Venkateswarlu
- Formerly
Department of Microbiology, Sri Krishnadevaraya
University, Anantapuramu 515003, India
| | - Rajarathnam Dharmarajan
- Global
Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Prasath Annamalai
- Global
Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Mallavarapu Megharaj
- Global
Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales 2308, Australia
- Cooperative
Research Centre for Contamination Assessment and Remediation of the
Environment (CRC CARE), The University of
Newcastle, Callaghan, New South Wales 2308, Australia
- . Phone: +61 411126857
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Mutzner L, Bohren C, Mangold S, Bloem S, Ort C. Spatial Differences among Micropollutants in Sewer Overflows: A Multisite Analysis Using Passive Samplers. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:6584-6593. [PMID: 32223223 DOI: 10.1021/acs.est.9b05148] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Untreated sewer overflows can contaminate receiving waters with micropollutants. Although concentrations of discharged micropollutants can be ecotoxicologically relevant, only limited data is available to assess occurrence and spatial differences among sewer overflow catchments. Therefore, we present an innovative type of data obtained with passive samplers at 20 combined sewer overflow sites (2-7 events per site; 95 events in total). The data sheds light on concentration ranges for 13 representative polar organic micropollutants and shows that micropollutants in both municipal wastewater and stormwater can be relevant sources of contaminants. We identify indicator micropollutants for further studies: benzotriazole (80% interquantile of time-weighted average concentration: 250-4800 ng/L), carbamazepine (33-910 ng/L), diclofenac (78-1000 ng/L), carbendazim (21-900 ng/L), diazinon (2.1-53 ng/L), diuron (22-1100 ng/L), mecoprop (98-5300 ng/L), metolachlor (6-230 ng/L), and terbutryn (29-810 ng/L). These concentration estimates are assumed to be on the safe side for comparison with environmental quality standards (EQS). A majority of sewer overflow sites (13 of 20) show discharge concentrations above acute EQS for at least one micropollutant and thus would have to rely on dilution by receiving waters to not exceed any EQS. The intersite variability among sewer overflows exceed the within-site variability. Hence, future monitoring studies should cover more sewer overflow sites. No correlation could be found with event durations, specific storage volume or land use data, thus showing the complexity of micropollutant occurrence and indicating that other factors led to the observed high spatial variability. In conclusion, our results clearly show the potential relevance of micropollutants in sewer overflows and the need to assess site-specific measures.
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Affiliation(s)
- Lena Mutzner
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
- Institute of Civil, Environmental and Geomatic Engineering, ETH Zürich, 8093 Zurich, Switzerland
| | - Christoph Bohren
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
- Institute of Civil, Environmental and Geomatic Engineering, ETH Zürich, 8093 Zurich, Switzerland
| | - Simon Mangold
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Simon Bloem
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Christoph Ort
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
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Svendsen SB, Carvalho PN, Bollmann UE, Ellegaard-Jensen L, Albers CN, Strobel BW, Jacobsen CS, Bester K. A comparison of the fate of diflufenican in agricultural sandy soil and gravel used in urban areas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 715:136803. [PMID: 32069738 DOI: 10.1016/j.scitotenv.2020.136803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/18/2019] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
Diflufenican is used in both agricultural and urban areas to control weeds. However, in Europe pesticides are regulated using agricultural soil data only. Urban soils where the top layer is replaced by gravel (e.g. driveways, outdoor tiled areas) can evidently differ from agricultural soils in many biotic and physical properties. In the present study, we compared the degradation, mineralization, sorption and aging of diflufenican between an agricultural sandy soil to a gravel used in urban areas. Both diflufenican and its two main aerobic metabolites were investigated. Diflufenican and the metabolites degraded slower in gravel than in agricultural soil. One of the metabolites, 2-[3-(Trifluoromethyl)phenoxy]nicotinic acid (AE B107137 as identified by EFSA; further abbreviated as AE-B), was formed from the incubation of diflufenican in both soil and gravel, however, showing different formation patterns in the two materials: No accumulation of AE-B was determined in the soil, whereas in gravel, an accumulation of AE-B was determined over the full study period of 150 days. After 150 days, approximately 10% of the applied diflufenican was mineralised in the soil (cumulative), while it was not mineralised in the gravel. Diflufenican showed much stronger sorption to the soil than to the gravel, while the sorption of the metabolites was weaker than diflufenican in both soil and gravel. Within the experimental period, the influence of aging on the fate of diflufenican in soil and gravel is limited (<0.9 and <1.4%, respectively) when compared to the amount of compound still present in the soil. Overall, the results imply shortcomings in the risk assessment procedures requested for the registration of pesticides for urban areas.
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Affiliation(s)
- Sif B Svendsen
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Pedro N Carvalho
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Ulla E Bollmann
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Lea Ellegaard-Jensen
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Christian N Albers
- Department of Geochemistry, Geological Survey of Denmark and Greenland, Øster Voldgade 10, 1350 København K, Denmark
| | - Bjarne W Strobel
- Department of Plant and Environmental Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg 1871, Denmark
| | - Carsten S Jacobsen
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Kai Bester
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark.
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Md Meftaul I, Venkateswarlu K, Dharmarajan R, Annamalai P, Megharaj M. Pesticides in the urban environment: A potential threat that knocks at the door. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 711:134612. [PMID: 31810707 DOI: 10.1016/j.scitotenv.2019.134612] [Citation(s) in RCA: 143] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/17/2019] [Accepted: 09/21/2019] [Indexed: 05/26/2023]
Abstract
Pesticides play a pivotal role in controlling pests and disease infestations not only in urban agriculture but also in non-agricultural settings. Several pesticides like herbicides, insecticides, fungicides, rodenticides, etc. are applied unintentionally at higher concentrations even in small urban areas such as lawns, gardens and impermeable surfaces. Consequent to their indiscriminate use, both extensively and intensively, in the urban areas, contamination of pesticides poses a serious threat to the environment, living organisms and food safety. Although the fate and ecological effects of pesticides and their residues have been thoroughly understood in agricultural soils, information available in the literature on the impact of these contaminants in the urban environment is very limited and fragmentary. In fact, the fate and behaviour of pesticide residues in the urban environment are distinct from those in other ecosystems since the soils in urban areas greatly vary in their physico-chemical properties. Development of sustainable and eco-friendly approaches for remediation of even urban soils contaminated with pesticides is therefore greatly warranted. Thus, the present critical review is the first single source that provides updated knowledge on the sources, nature and extent of pesticide pollution in the urban environment, and the ecological and human health effects of pesticides and their residues. The potential of nano-encapsulation of pesticides for their application in urban settings has also been discussed.
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Affiliation(s)
- Islam Md Meftaul
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, NSW 2308, Australia; Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh
| | - Kadiyala Venkateswarlu
- Formerly Department of Microbiology, Sri Krishnadevaraya University, Anantapuramu 515003, India
| | - Rajarathnam Dharmarajan
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Prasath Annamalai
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Mallavarapu Megharaj
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), The University of Newcastle, Callaghan, NSW 2308, Australia.
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46
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Wang H, Cheng Z, Yuan H, Zhu N, Lou Z, Otieno P. Occurrence of banned and commonly used pesticide residues in concentrated leachate: Implications for ecological risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136287. [PMID: 31923666 DOI: 10.1016/j.scitotenv.2019.136287] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/20/2019] [Accepted: 12/20/2019] [Indexed: 05/27/2023]
Abstract
Amounts of banned and current pesticides have been used in domestic and agricultural pest control, and their residues have accumulated along the waste stream. In this work, pesticides were characterized in concentrated leachates (CLs) from 5 municipal landfill sites, 2 incineration plants and 1 composting plant in six provinces. A total of 31 pesticides were detected which included 8 organochlorine pesticides (OCPs, 303-2974 ng/L), 16 organophosphorus pesticides (OPPs, 1380-13,274 ng/L) and 7 synthetic pyrethroids (SPs, 319-5636 ng/L). Despite the ten years ban of hexachlorocyclohexane, methamidophos and parathion-methyl, they were still in CL at a mean value of 320 ng/L and 88 ng/L, respectively. The average Σ8OCPs, Σ16OPPs and Σ7SPs in CL from landfill sites were approximately 2.8, 1.1 and 4.5 times higher than those from incineration plants, which might have been influenced by pH, moisture and/or HRT. Additionally, it was found that CL from incineration plants and composting plant with lower pesticide contents posed a much higher acute and chronic eco-risk. Methamidophos was the dominant pesticide in CL from incineration plants, which was much higher than any other pesticides detected. The annual emissions of Σ8OCPs, Σ16OPPs and Σ7SPs discharged from landfill-CL were estimated to be 2370, 10,357 and 2994 g, respectively. It was evident from the study that long-term release of CL after waste disposal could cause potential risk of ecological pollution.
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Affiliation(s)
- Hui Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhaowen Cheng
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Haiping Yuan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource, Shanghai 200240, China
| | - Nanwen Zhu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource, Shanghai 200240, China
| | - Ziyang Lou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China; China Institute for Urban Governance, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource, Shanghai 200240, China.
| | - Peter Otieno
- Department of Chemistry, Maseno University, Maseno, Kenya; Institute of Ecological Chemistry, Helmholtz Zentrum Müenchen, German National Research Centre for Environmental Health, Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany
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Okada E, Allinson M, Barral MP, Clarke B, Allinson G. Glyphosate and aminomethylphosphonic acid (AMPA) are commonly found in urban streams and wetlands of Melbourne, Australia. WATER RESEARCH 2020; 168:115139. [PMID: 31605832 DOI: 10.1016/j.watres.2019.115139] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/13/2019] [Accepted: 09/27/2019] [Indexed: 05/27/2023]
Abstract
Glyphosate is the most widely-used pesticide for weed control in agriculture and in urban and residential areas. This is the first study to quantify glyphosate and AMPA levels in surface water in Australia from different land uses. Glyphosate and AMPA was measured in surface water from 10 rural streams, 30 urban stormwater wetlands and 9 urban streams located in and around the city of Melbourne, Australia on five occasions between October 2017 and February 2018. Glyphosate and AMPA were present in most of the urban surface water samples. The frequency of detection of glyphosate was 77% in wetlands and 79% in urban streams, whereas it was only detected in 4% of the rural streams. Similarly, AMPA detection was 91% in wetlands and 97% in urban streams, whereas it was only present in 6% of the rural stream samples. In both urban streams and wetlands, the highest average glyphosate concentrations occurred in November (1.8 ± 2.2 μg L-1). Overall, wetlands and streams associated with urban land use are vulnerable to glyphosate contamination. These results highlight the importance of screening for contaminants in urban stormwater to identify the source of pollutants that may end up in aquatic ecosystems and the risks therefrom.
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Affiliation(s)
- Elena Okada
- Centre for Environmental Sustainability and Remediation, School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria, 3001, Australia; INTA Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce, Route 226 Km 73.5, 7620, Balcarce, Argentina.
| | - Mayumi Allinson
- Department of Chemical Engineering, The University of Melbourne, Victoria, 3010, Australia
| | - María P Barral
- INTA Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce, Route 226 Km 73.5, 7620, Balcarce, Argentina
| | - Bradley Clarke
- School of Chemistry, The University of Melbourne, Victoria, 3010, Australia
| | - Graeme Allinson
- Centre for Environmental Sustainability and Remediation, School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria, 3001, Australia
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Shah P, Wang ZW. Using digital polymerase chain reaction to characterize microbial communities in wetland mesocosm soils under different vegetation and seasonal nutrient loadings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 689:269-277. [PMID: 31276994 DOI: 10.1016/j.scitotenv.2019.06.305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 06/19/2019] [Accepted: 06/19/2019] [Indexed: 06/09/2023]
Abstract
Constructed wetlands are multi-functional systems that can effectively store and transform pollutants primarily through natural processes. However, the removal of nitrogen pollutant by wetlands is highly variable, likely due to a combination of factors such as plant species-specific assimilation behavior, the effects of soil microbial diversity, and variable nitrogen inputs. In this study, the effects of plant species richness (i.e., number of plant species in a system) and seasonal nutrient loading (i.e., nitrogen fertilization) on the microbial community responsible for regulating nitrogen turnover in wetland mesocosm soils was investigated. Digital polymerase chain reaction was used to quantify bacterial abundance. Principal component analysis was employed to identify dominant patterns within the data, and resampling-based analysis of variance was used to assess statistical significance of any observed differences caused by fertilization, season, and/or plant species richness. Results indicated that fertilization or season, which was convolved with fertilization, was the dominant factor influencing the microbial community in the study environment. The effects of plant species richness were more nuanced. Its greater richness significantly impacted the abundance of only a subset of bacterial groups (i.e., the ammonia oxidizing bacteria, Nitrospira spp. of nitrite-oxidizing bacteria, and comammox, but not the denitrifying bacteria).
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Affiliation(s)
- Parita Shah
- Occoquan Laboratory, Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, USA
| | - Zhi-Wu Wang
- Occoquan Laboratory, Department of Civil and Environmental Engineering, Virginia Tech, Manassas, VA, USA.
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Hong N, Liu A, Zhu P, Zhan Y, Yang M, Zhang Z, Yang B, Guan Y. Comparative toxicity of organic mixture attached to road deposited sediments: Inadequacy of conventionally using individual pollutants to assess comprehensive hazard effects. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 180:357-365. [PMID: 31102843 DOI: 10.1016/j.ecoenv.2019.05.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/07/2019] [Accepted: 05/09/2019] [Indexed: 06/09/2023]
Abstract
Organic pollutants attached on road deposited sediments (RDS) during dry days can be washed-off into stormwater runoff during rainfall events, undermining stormwater reuse safety. Previous research studies commonly utilized individual pollutant groups and their quantity to evaluate the hazard effect of pollutants attached to RDS in terms of stormwater reuse. Since many types of organic pollutants are present together rather than individually, conventional approaches might not permit a comprehensive understanding of how appropriately the RDS polluted stormwater can be reused. This study undertook a toxicity test of organic pollutants attached to RDS using Chinese hamster ovary cells (CHO), testing a hypothesis that solely focusing on individual pollutant groups are not adequate to represent hazard effects of resulting stormwater and hence their adequacy for reuse. It is noted that comparative toxicity of RDS is not strongly related to total solids (commonly seen as the key carrier of pollutants) and chemical oxygen demand (COD, representing organic matters). Additionally, the comparison results of spatial distributions of toxicity (in this study) and individual pollutants in previous studies did not show a similar trend. These results imply that toxicity should be also used to indicate how stormwater can be safely reused while solely investigating individual pollutants can not adequately show a comprehensive hazard effect in terms of ensuring stormwater reuse safety. Based on study outcomes, a new assessment approach considering both pollutant and toxicity were proposed. This will assist on effective stormwater reuse and ensuring their reuse safety.
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Affiliation(s)
- Nian Hong
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China; Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, 518060, Shenzhen, China
| | - An Liu
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China; Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, 518060, Shenzhen, China.
| | - Panfeng Zhu
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Yuting Zhan
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China; Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, 518060, Shenzhen, China
| | - Mengting Yang
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China; Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, 518060, Shenzhen, China.
| | - Zhenxuan Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China; Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, 518060, Shenzhen, China
| | - Bo Yang
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China; Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, 518060, Shenzhen, China
| | - Yuntao Guan
- Guangdong Provincial Engineering Technology Research Centre for Urban Water Cycle and Water Environment Safety, Graduate School at Shenzhen, Tsinghua University, 518055, Shenzhen, China
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Mutzner L, Vermeirssen ELM, Mangold S, Maurer M, Scheidegger A, Singer H, Booij K, Ort C. Passive samplers to quantify micropollutants in sewer overflows: accumulation behaviour and field validation for short pollution events. WATER RESEARCH 2019; 160:350-360. [PMID: 31158617 DOI: 10.1016/j.watres.2019.04.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 04/01/2019] [Accepted: 04/06/2019] [Indexed: 05/21/2023]
Abstract
Contaminants in sewer overflows can contribute to exceedances of environmental quality standards, thus the quantification of contaminants during rainfall events is of relevance. However, monitoring is challenged by i) high spatiotemporal variability of contaminants in events of hard-to-predict durations, and ii) a large number of remote sites, which would imply enormous efforts with traditional sampling equipment. Therefore, we evaluate the applicability of passive samplers (Empore styrene-divinylbenzene reverse phase sulfonated (SDB-RPS)) to monitor a set of 13 polar organic contaminants. We present calibration experiments at high temporal resolution to assess the rate limiting accumulation mechanisms for short events (<36 h), report parameters for typical sewer conditions and compare passive samplers with composite water samples in a field study (three locations, total 10 events). With sampling rates of 0.35-3.5 L/d for 1 h reference time, our calibration results indicate a high sensitivity of passive samplers to sample short, highly variable sewer overflows. The contaminant uptake kinetic shows a fast initial accumulation, which is not well represented with the typical first-order model. Our results indicate that mass transfer to passive samplers is either controlled by the water boundary layer and the sorbent, or by the sorbent alone. Overall, passive sampler concentration estimates are within a factor 0.4 to 3.1 in comparison to composite water samples in the field study. We conclude that passive samplers are a promising approach to monitor a large number of discharge sites although it cannot replace traditional stormwater quality sampling in some cases (e.g. exact load estimates, high temporal resolution). Passive samplers facilitate identifying and prioritizing locations that may require more detailed investigations.
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Affiliation(s)
- Lena Mutzner
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland; Institute of Civil, Environmental and Geomatic Engineering, ETH Zürich, 8093, Zurich, Switzerland
| | | | - Simon Mangold
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland
| | - Max Maurer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland; Institute of Civil, Environmental and Geomatic Engineering, ETH Zürich, 8093, Zurich, Switzerland
| | - Andreas Scheidegger
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland
| | - Heinz Singer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland
| | - Kees Booij
- Passive Sampling of Organic Compounds (PaSOC), 8821LV, Kimswerd, the Netherlands
| | - Christoph Ort
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland.
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