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El Zokm GM, El Saharty AA, El-Said GF, Hussein MMA, Ghazal MA, Nasra AES, Okbah MA. A comparative study of surfactant distribution and fate (western and eastern) Egyptian Mediterranean coasts focusing on its environmental toxicity. MARINE ENVIRONMENTAL RESEARCH 2024; 198:106535. [PMID: 38704932 DOI: 10.1016/j.marenvres.2024.106535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 04/23/2024] [Accepted: 04/29/2024] [Indexed: 05/07/2024]
Abstract
One of the most difficult-to-manage new contaminants constantly released into the environment is linear alkylbenzene sulphonate (LAS), an anionic surfactant. Significant volumes of LAS are received by the Mediterranean coast of Egypt. The current study is a comprehensive assessment of the environmental fate of the LAS 1505 km off the Mediterranean coast of Egypt in the fall of 2023 in order to track its geographic spread and eventual demise in the water column. Critical analysis of LAS revealed that it is vertically distributed in various ways according to sources, uses, production amounts, and salinity levels. The vertical variation of LAS can be explained by its amphiphilic structure. A significant increase in surfactant concentration (>300 μg/L) was recorded in 66% and 43% of the total samples, ranging from 301.128 to 455.36 and from 304.556 to 486.135 for the western and eastern sides along the Egyptian Mediterranean coast, respectively. Evaluation of the average acute and chronic risk quotient (RQ) along the investigated locations revealed that fish were the most susceptible to LAS in both long and short exposure periods. The presented results also indicated significant LAS toxicity to three trophic levels (RQ values > 1). LAS toxicity to marine organisms was greater in the western than in eastern coastal regions according to acute and chronic mixture risk characterization ratios (RCRmix). The three trophic levels in the study area had the following order of acute relative contribution (RC) to LAS toxicity: fish > invertebrates > algae. The ANOVA test results showed that in both the western and eastern regions, LAS varied significantly (p < 0.05) with salinity (1.04E-60 and 5.44E-42) and depth (6.02E-65 and 1.59E-47), respectively. In addition, a significant difference was observed using the ANOVA test between the eastern and western regions of the Egyptian Mediterranean coast.
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Affiliation(s)
- Gehan M El Zokm
- National Institute of Oceanography and Fisheries, NIOF, Egypt
| | | | - Ghada F El-Said
- National Institute of Oceanography and Fisheries, NIOF, Egypt.
| | | | | | | | - Mohamed A Okbah
- National Institute of Oceanography and Fisheries, NIOF, Egypt
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2
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Kar A, Mukherjee SK, Barik S, Hossain ST. Antimicrobial Activity of Trigonelline Hydrochloride Against Pseudomonas aeruginosa and Its Quorum-Sensing Regulated Molecular Mechanisms on Biofilm Formation and Virulence. ACS Infect Dis 2024; 10:746-762. [PMID: 38232080 DOI: 10.1021/acsinfecdis.3c00617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Pseudomonas aeruginosa, a vivid biofilm-producing bacterium, is considered a dreadful opportunistic pathogen, and thus, management of biofilm-associated infections due to multidrug resistant strains by traditional drugs currently is of great concern. This study was aimed to assess the impact of trigonelline hydrochloride, a pyridine alkaloid, on P. aeruginosa PAO1, in search of an alternative therapeutant. The effect of trigonelline on colony morphology and motility was studied along with its role on biofilm and expression virulence factors. Trigonelline influenced the colony structure, motility, biofilm architecture, and the production of virulence factors in a dose-dependent manner. Alterations in quorum sending (QS)-regulated gene expression after treatment and molecular docking analysis for certain regulator proteins confirmed its effect on the QS-system network by affecting Las, Rhl, and Pqs signaling pathways and as possible molecular targets. Thus, trigonelline might be considered as a potential chemical lead to manage biofilm-associated pathogenesis or to develop other analogues with enhanced pharmacokinetic actions.
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Affiliation(s)
- Amiya Kar
- Department of Microbiology, University of Kalyani, Kalyani 741235, India
| | | | - Subhasis Barik
- Department of In Vitro Carcinogenesis and Cellular Chemotherapy, Chittaranjan National Cancer Institute, Kolkata, West Bengal 700026, India
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3
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Naqvi SNH, Bibi I, Niazi NK, Tahseen R, Al-Misned F, Shahid M, Naqvi SA, Ashraf W, Shabir G, Iqbal S, Ali F, Afzal M. Exploring the potential of bacterial-augmented floating treatment wetlands for the remediation of detergent-contaminated water. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 26:882-893. [PMID: 37933838 DOI: 10.1080/15226514.2023.2275725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Due to industrialization and urbanization, the use of detergents inadvertently led to contamination of aquatic environments, thus posing potential threat to aquatic organisms and human health. One of the main components of detergents is linear alkylbenzene sulfonate (LAS), which can cause toxic effects on living organisms, particularly aquatic life in the environment. In this study, floating treatment wetlands (FTWs) mesocosms were developed and augmented with LAS-degrading bacteria. The plant species, Brachiaria mutica (Para grass), was vegetated to establish FTWs and bacterial consortium (1:1:1:1) of Pseudomonas aeruginosa strain PJRS20, Bacillus sp. BRRH60, Acinetobacter sp. strain CYRH21, and Burkholderia phytofirmans Ps.JN was augmented (free or immobilized) in these mesocosms. Results revealed that the FTWs removed LAS from the contaminated water and their augmentation with bacteria slightly increased LAS removal during course of the experiment. Maximum reduction in LAS concentration (94%), chemical oxygen demand (91%), biochemical oxygen demand (93%), and total organic carbon (91%) was observed in the contaminated water having FTWs augmented with bacterial consortium immobilized on polystyrene sheet. This study highlights that the FTWs supported with immobilized bacteria on polystyrene sheets can provide an eco-friendly and sustainable solution for the remediation of LAS-bearing water, especially for developing countries like Pakistan.
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Affiliation(s)
- Syed Najaf Hasan Naqvi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C PIEAS), Faisalabad, Pakistan
| | - Irshad Bibi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Nabeel Khan Niazi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Razia Tahseen
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C PIEAS), Faisalabad, Pakistan
| | - Fahad Al-Misned
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Muhammad Shahid
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, Pakistan
| | | | | | - Ghulam Shabir
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C PIEAS), Faisalabad, Pakistan
| | - Samina Iqbal
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C PIEAS), Faisalabad, Pakistan
| | - Fawad Ali
- Centre for Planetary Health and Food Security, Griffith University, Nathan Campus (4111), Brisbane, QLD, Australia
- Queensland Department of Agriculture and Fisheries, Mareeba (4880), QLD, Australia
| | - Muhammad Afzal
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C PIEAS), Faisalabad, Pakistan
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4
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Priyanka K, Behera M, Remya N. Greywater treatment in SBR-SND reactor - optimization of hydraulic retention time, volumetric exchange ratio and sludge retention time. ENVIRONMENTAL TECHNOLOGY 2023; 44:3791-3802. [PMID: 35482426 DOI: 10.1080/09593330.2022.2072238] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 04/25/2022] [Indexed: 06/14/2023]
Abstract
In this study, simultaneous nitrification and denitrification-sequencing batch reactor (SND-SBR) process was investigated to treat greywater. The effect of three process parameters, including hydraulic retention time (HRT), volumetric exchange ratio (VER) and sludge retention time (SRT), was optimised using a 23 full factorial design. The statistic model was developed for two response variables, i.e. chemical oxygen demand (COD) and ammonia (NH3-N) removal. The optimum conditions were 6.8 h HRT (anaerobic/aerobic/anoxic: 1.77 h/2.77 h/2.27 h), 0.7 VER and 7.94 d SRT, which resulted in 93.9% COD and 84.6% NH3-N removal efficiency. SRT was the most significant factor, followed by HRT and VER for COD and NH3-N removal. The interaction effect of VER and SRT was significant in COD removal. On the other hand, the interaction effects of HRT-VER and HRT-SRT were significant in NH3-N removal. The removal efficiencies of 89.6 ± 1.1% and 83.7 ± 2.3% were observed for TKN and TN, respectively, in the optimised SND-SBR system. NH3-N removal was obtained via nitrate pathway in the SND-SBR system. The PO43--P removal of 74.2 ± 3.4% was obtained via aerobic phosphorus uptake and post anoxic denitrification at the optimal condition. To enhance PO43--P removal, adsorption (using corn cob adsorbent) was integrated with SBR by adding the optimum adsorbent dose (0.5 g/L). The PO43--P removal efficiency in the SBR-adsorption system was found to be 80 ± 1.5%. The biodegradation of emerging contaminants (ECs) was also carried out in the SND-SBR system, and the results showed removal rate of 58.9 ± 2.3% benzophenone-3 (BP) and 80.1 ± 2.2% anionic surfactant (AS).
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Affiliation(s)
- Kumari Priyanka
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha, India
| | - Manaswini Behera
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha, India
| | - Neelancherry Remya
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha, India
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5
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Cetinkaya Atesci Z, Inan H. Removal of microfiber and surfactants from household laundry washing effluents by powdered activated carbon: kinetics and isotherm studies. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:1578-1593. [PMID: 37768756 PMCID: wst_2023_281 DOI: 10.2166/wst.2023.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Domestic laundry wastewater discharge contributes significantly to the presence of microfiber and surfactant pollutants in aquatic ecosystems, which have detrimental and toxic effects on humans and the environment. Investigating the efficacy of powdered activated carbon (PAC) in removing micro-/nanofibers with or without surfactant from household laundry effluent is the purpose of the current research. To simulate real-world scenarios, PAC adsorption kinetics and isotherms in laundry effluents under controlled conditions were studied. These studies showed that the kinetics obeyed a pseudo-second-order process and the isotherms varied between Langmuir and Freundlich models depending on the water types. In the results of experiments using distilled water and tap water, it was observed that the adsorption capacity was higher in tap water. When the adsorption of 0.1 μm filtered synthetic garments, detergent, and tap water was compared with the adsorption of the raw sample, it was observed that the adsorption capacity of the 0.1 μm filtered version was higher. Even though this study is preliminary, the results indicate that PAC has the capacity to serve as a viable approach for mitigating micro-/nanoplastic and surfactant contamination from laundry wastewater, thereby offering valuable guidance for advancing eco-friendly laundry techniques.
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Affiliation(s)
- Zuhal Cetinkaya Atesci
- Environmental Engineering Department, Gebze Technical University, Cayırova, Kocaeli 41400, Turkey E-mail:
| | - Hatice Inan
- Environmental Engineering Department, Gebze Technical University, Cayırova, Kocaeli 41400, Turkey
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6
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Bode‐Olajide FB, Yusuff AS, Adesina OA, Adeniyi AT. Influence of process conditions on the sulfonation of methyl ester synthesized from used cooking oil: Optimization by Taguchi approach. J SURFACTANTS DETERG 2023. [DOI: 10.1002/jsde.12661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Favour B. Bode‐Olajide
- Department of Chemical and Petroleum Engineering, College of Engineering Afe Babalola University Ado‐Ekiti Nigeria
| | - Adeyinka S. Yusuff
- Department of Chemical and Petroleum Engineering, College of Engineering Afe Babalola University Ado‐Ekiti Nigeria
| | - Olusola A. Adesina
- Department of Chemical and Petroleum Engineering, College of Engineering Afe Babalola University Ado‐Ekiti Nigeria
| | - Adekunle T. Adeniyi
- Department of Chemical and Petroleum Engineering, College of Engineering Afe Babalola University Ado‐Ekiti Nigeria
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7
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Vishali S, Poonguzhali E, Banerjee I, George SS, Srinivasan P. Purification of domestic laundry wastewater in an integrated treatment system consists of coagulation and ultrafiltration membrane process. CHEMOSPHERE 2023; 314:137662. [PMID: 36586447 DOI: 10.1016/j.chemosphere.2022.137662] [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: 10/20/2022] [Revised: 12/07/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
An integrated unit to purify and reuse domestic laundry wastewater consisting of coagulation, sand filtration, carbon adsorption, and ultrafiltration process is developed. Chitosan and Ameztreat 102 polyamine were used as coagulants and their treatability was measured by color, turbidity and concentration of Linear Alkylbenzene Sulphonates (LAS) at various operation conditions. As a result of the trial studies, the maximum removal efficiency was attained as (i) for Chitosan- 98.2% color, 99.3% turbidity, 100% LAS removal efficiency; (ii) for Polyamine-88% color, 99% turbidity, 100% LAS. The transport mechanism of the pollutant towards the coagulant was described using kinetic models. The thickener area calculated is 0.2436 m2 for the flow rate of 100 L/h by Kynch theory. The results were recommended that the laundry wastewater be efficiently treated in the proposed treatment train and could be reused effectively.
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Affiliation(s)
- S Vishali
- Department of Chemical Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, India.
| | - E Poonguzhali
- Department of Chemical Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, India
| | - Indhurekha Banerjee
- Department of Chemical Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, India
| | - Sharan Sakshi George
- Department of Chemical Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, India
| | - P Srinivasan
- PG and Research Department of Biotechnology, PGP College of Arts and Acience, Namakkal, 637 207, India
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8
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Role of ionic surfactants on the activation of K2S2O8 for the advanced oxidation processes. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Lu J, Hou R, Wang Y, Zhou L, Yuan Y. Surfactant-sodium dodecyl sulfate enhanced degradation of polystyrene microplastics with an energy-saving electrochemical advanced oxidation process (EAOP) strategy. WATER RESEARCH 2022; 226:119277. [PMID: 36283230 DOI: 10.1016/j.watres.2022.119277] [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: 06/07/2022] [Revised: 10/01/2022] [Accepted: 10/17/2022] [Indexed: 05/09/2023]
Abstract
Microplastics have been identified as a kind of emerging pollutant with potential ecological risks, and it is an urgent endeavor to find proper technologies for their remediation. Electrochemical advanced oxidation process (EAOP) technology has exhibited robust performance in the removal of various refractory organic pollutants. In this study, we explored a new remediation strategy for polystyrene microplastics (PS MPs), introducing sodium dodecyl sulfate (SDS) to enhance its degradation performance in boron-doped diamond (BDD) anode adopted EAOP. At first, we investigated the degradation behaviors of SDS in the BDD electrolysis. According to the SDS half-life under various current densities, the SDS addition strategy into EAOP is proposed; that is, supplement SDS to 500 mg/L at every half-life during electrolysis except the last cycle. Results indicated that SDS addition greatly enhanced MPs degradation rate in 72 h of EAOP, about 1.35-2.29 times higher than that in BDD electrolysis alone. The SDS assisted EAOP also led to more obvious changes in the particle size, morphology, and functional groups of the MPs. After treatment, a variety of alkyl-cleavage and oxidation products were identified, which attributed to the strong attack of oxidants (i.e., persulfate) on the MPs. The enhanced persulfate generation and oxidants adsorption on MPs can explain the enhancement effect in the EAOP strategy. Cost analysis results showed the surfactant only accounts for < 0.05% of the total operating costs in the SDS assisted EAOP. In general, the current study provided new insight into the effective way to improve the EAOP efficiency of microplastics.
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Affiliation(s)
- Jinrong Lu
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Rui Hou
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Yi Wang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Lihua Zhou
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Yong Yuan
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
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10
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Priyanka K, Remya N, Behera M. Sequential biological and solar photocatalytic treatment system for greywater treatment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:584-595. [PMID: 35960838 DOI: 10.2166/wst.2022.229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this study, sequencing batch reactor (SBR) using anaerobic/aerobic/anoxic process was coupled to a solar photocatalytic reactor (SPCR) for greywater treatment. The greywater effluent from SBR (operated at the optimal condition: 6.8 h hydraulic retention time (HRT), 0.7 Volumetric exchange ratio (VER) and 7.94 d solids retention time (SRT) with optimal corn cob adsorbent dosage (0.5 g/L)) was fed to the SPCR (operated at optimal conditions: pH - 3, H2O2 dosage - 1 g/L, catalyst dosage - 5 g/L). Chemical oxygen demand (COD) removal of 92.8±0.5% and ∼100% were achieved in SBR and SBR-SPCR, respectively. Similarly, total organic carbon (TOC) removal of 91±0.9% and ∼100% were observed in SBR and SBR-SPCR, respectively. After SBR treatment, average total nitrogen (TN) removal of 84% was found and this TN removal increased to 93% after combined SBR-SPCR treatment. The maximum PO43-_P reduction of 80±1.5% % was achieved with SBR-adsorption system. In addition, a maximum of 87±0.9% of net PO43-_P removal was reached after SBR-SPCR treatment. 58.9±2.3% BP (benzophenone-3) removal was obtained in the SBR while the integration of SBR and SPCR treatment was resulted in 100% BP removal. An effective anionic surfactant (AS) removal rate (80.1±2.2%) was observed in the SBR phase, which further improved to 94.9±1% at the end of 4 h SPCR treatment.
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Affiliation(s)
- Kumari Priyanka
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, Odisha 752050, India E-mail:
| | - Neelancherry Remya
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, Odisha 752050, India E-mail:
| | - Manaswini Behera
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, Odisha 752050, India E-mail:
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11
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Liu Y, Zhao Y, Jiang N, Cheng W, Lu D, Zhang T. Separate Reclamation of Oil and Surfactant from Oil-in-Water Emulsion with a CO 2-Responsive Material. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:9651-9660. [PMID: 35724242 DOI: 10.1021/acs.est.1c08149] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Oil-in-water (O/W) emulsion is one type of oily wastewater produced by many industries. The treatment of and resource recovery from O/W emulsions are very challenging. Unlike bulk or floating oil, which can be successfully abstracted from wastewater by hydrophobic/oleophilic materials, the abstraction of emulsified oil is not easy because of its highly hydrophilic surface composed of dense surfactants. Separate reclamation of miscible oil and surfactant through a green approach is even more difficult. Here, we report that a CO2-responsive material can abstract emulsified oil and demulsify the oil droplets. Moreover, it can release the abstracted oil and surfactant separately. This material exhibited a very high adsorption capacity for emulsified oil (14 g g-1). Upon switching the surface wettability of the material under CO2 or synthetic flue gas sparging, coalesced oil was reclaimed while the surfactant was retained inside the pores. The hydrophobic character of the material was retrieved when CO2 was purged with nitrogen sparging or air heating. Then, the surfactant was reclaimed by elution with diluted alkali/ethanol. Oil and surfactant were thus separately reclaimed from the O/W emulsion. High rates of oil removal, oil recovery, and surfactant recovery were maintained during repeated adsorption/desorption operations. This work provides a potentially sustainable and green way for O/W emulsion treatment and resource recovery.
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Affiliation(s)
- Ya Liu
- Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yunfeng Zhao
- Tianjin Key Laboratory of Advanced Functional Porous Materials, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P.R. China
| | - Ning Jiang
- Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wei Cheng
- Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Dongwei Lu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Tao Zhang
- Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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12
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Martínez RA, Fechner DC, Delfino MR, Pellerano RG, Goicoechea HC. Rapid determination of three textile surfactants in environmental samples by modeling excitation-emission second-order data with multi-way calibration methods. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:25869-25880. [PMID: 34850349 DOI: 10.1007/s11356-021-17660-7] [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: 06/08/2021] [Accepted: 11/16/2021] [Indexed: 06/13/2023]
Abstract
The textile industry is an important potential source of environmental pollution due to the use of chemical products. Dyes, hydrolyzed dyes, and surfactants, among others, are chemical compounds present in wastewater of textile plant. Moreover, the anionic surfactants have toxic effects for various aquatic organisms even in low concentrations. The methodologies investigated to quantify surfactants, in general, consume a lot of analysis time and frequently use toxic or environmentally objectionable reagents. For these reasons, the objective of this work was to develop a quick and simple method to quantify surfactants without the use of expensive reagents and equipment, avoiding extraction and preconcentration stages. The proposed method is based on fluorescent spectroscopy measurements for the acquisition of second-order data in excitation-emission matrices and multivariate calibration techniques applied to the data. The unfolded partial least squares combined to residual bilinearization (U-PLS/RBL) algorithm was better than parallel factor analysis (PARAFAC). U-PLS/RBL accurately quantified alkylnonylphenolethoxylated (APEO), dodecylbenzenesulfonic acid (ADBS), and 2-phenoxy-ethoxylated fatty alcohol (AGFE) surfactants. The chemometric model obtained good analytical figures of merit: REP% between 5 and 13 and LOQ between 0.45 and 2.77 μg mL-1. This methodology had no significant difference compared with results obtained by a HPLC-FD reference technique, in addition with a considerable reduction in analysis time, reagent consumption, and therefore lower cost. For environmental applications, APEO, ADBS, and AGFE were quantify in textile wastewater treatment and in the receiving water body. The concentrations varied from 8.73 to 73.94 μg mL-1 in the textile wastewater and were not detected in the receiving water body.
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Affiliation(s)
- Ramón A Martínez
- Dpto. de Química, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5460, 3400, Corrientes, Argentina.
| | - Diana C Fechner
- Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), UNNE-CONICET, Facultad de Ciencias Exactas y Naturales y Agrimensura, Av. Libertad 5400, 3400, Corrientes, Argentina
| | - Mario R Delfino
- Dpto. de Química, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5460, 3400, Corrientes, Argentina
| | - Roberto G Pellerano
- Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), UNNE-CONICET, Facultad de Ciencias Exactas y Naturales y Agrimensura, Av. Libertad 5400, 3400, Corrientes, Argentina
| | - Héctor C Goicoechea
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Catedra de Química Analítica I, Universidad Nacional del Litoral, Ciudad Universitaria, S300ZAA, Santa Fe, Argentina
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13
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A Simplified Method for Anionic Surfactant Analysis in Water Using a New Solvent. TOXICS 2022; 10:toxics10040162. [PMID: 35448423 PMCID: PMC9025779 DOI: 10.3390/toxics10040162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 11/17/2022]
Abstract
Anionic surfactants (AS) are becoming a major emerging contaminant of waters due to their widespread use in household and industrial products. The standard chloroform method for analysis of AS in water relies on chloroform extraction of a methylene blue active substance (MBAS), which contains ion pairs between methylene blue (MB) molecules (positively charged) and AS. Due to the poor extractability of chloroform, the procedure is complicated, time-consuming, and subject to anionic interferences. A mixture of methyl isobutyl ketone (MIBK)–1,2-dichloroethane (DCE) at a 3:1 ratio of MIBK:DCE proved to be a robust solvent for AS extraction for a wide range of samples under various chemical conditions. The objectives of this research were to set the washing protocol to eliminate the anionic interferences in the MIBK-DCE extraction and to develop a new simplified analytical method for AS analysis using the MIBK-DCE (3:1) extractant. The suitability of the proposed MIBK-DCE method was validated based on quality control and assurance criteria, such as selectivity, accuracy, precision, method detection limit (MDL), limit of quantification (LOQ), and sensitivity. Various water samples, such as freshwater, wastewater, and seawater, were used for the method development and validation. Interferences by inorganic and organic anions were evident in the reference chloroform method but were eliminated in the MIBK-DCE procedure with a two-step process that consisted of washing with a carbonate/bicarbonate solution at pH 9.2 and a mixture of silver sulfate (Ag2SO4) and potassium alum (AlK(SO4)2). The simplified MIBK-DCE method for sodium dodecyl sulfate (SDS) analysis consisted of (i) sample pre-treatment, (ii) MIBK-DCE extraction, (iii) washing and filtration, and (iv) absorbance measurement. The MIBK-DCE method was accurate, precise, selective, and sensitive for AS analysis and showed MDL of 0.0001 mg/L, LOQ of 0.0005 mg/L, relative standard deviation (RSD) of 0.1%, and recovery of 99.0%. All these criteria were superior to those of the chloroform method. Sensitivity analysis showed highly significant correlations in AS analyses between the MIBK-DCE and chloroform methods for domestic wastewater, industrial wastewater, and seawater. The MIBK-DCE method is simple, rapid, robust, reproducible, and convenient, when compared to the chloroform method. Results demonstrate that the simplified MIBK-DCE method can be employed for AS analysis in a wide range of environmental waters including seawater.
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Kooh MRR, Thotagamuge R, Chou Chau YF, Mahadi AH, Lim CM. Machine learning approaches to predict adsorption capacity of Azolla pinnata in the removal of methylene blue. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2021.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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15
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Yoon JH, Shin YG, Kim HS, Kirkham MB, Yang JE. Screening of a Novel Solvent for Optimum Extraction of Anionic Surfactants in Water. TOXICS 2022; 10:toxics10020080. [PMID: 35202266 PMCID: PMC8880286 DOI: 10.3390/toxics10020080] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/29/2022] [Accepted: 02/03/2022] [Indexed: 02/04/2023]
Abstract
Anionic surfactants (AS) are detrimental aquatic pollutants due to their well-characterized toxicity to aquatic organisms. The concentration of AS in aquatic environments is increasing because of their extensive use in many industries and households. The standard reference method for AS analysis is to determine a methylene blue active substance (MBAS) complex formed between AS and the methylene blue (MB) cation by using chloroform. However, chloroform has a low AS extraction efficiency and other limiting properties, such as a high density and volatility, which make the conventional AS analytical method time-consuming and labor-intensive. In an effort to replace the use of chloroform, this study was carried out to screen novel solvents for their ability to extract AS in water samples. Criteria were based on AS extraction efficiency, physicochemical properties, and the stability of the solvent under different environmental conditions. Organic solvents, such as methyl isobutyl ketone (MIBK), 1,2-dichloroethane (DCE), dichloromethane, benzene, and n-hexane, were assessed. In extraction of the anionic surfactant sodium dodecyl sulfate (SDS), the mixture of MIBK-DCE (3:1) proved to be an optimum solvent as an alternative to chloroform. It not only enhanced SDS extractability but also improved properties, such as having a lower volatility, a lower density than water, and a quicker phase separation. Among solvents screened, no one single solvent in SDS extraction could meet such criteria. The performance of the MIBK-DCE (3:1) mixture in SDS extraction was stable, irrespective of pH and ionic strength of the SDS solution, washing process, and presence of cations. Anionic interference from halogen and polyatomic and organic anions in SDS extraction by MIBK-DCE (3:1) existed only at an elevated concentration, which is not occurring in the natural aquatic environment. Results demonstrated that a MIBK-DCE (3:1) mixture solvent could be used in AS analysis for a wide range of aquatic samples and it could be the basis for the development of a new analytical method to replace conventional chloroform.
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Affiliation(s)
- Jung-Hwan Yoon
- Kangwon Institute of Inclusive Technology, Kangwon National University, Chuncheon 24341, Korea;
- Department of Biological Environment, Kangwon National University, Chuncheon 24341, Korea;
| | - Yong Geon Shin
- Gangwon Institute of Health and Environment, Chuncheon 24203, Korea;
| | - Hyuck Soo Kim
- Department of Biological Environment, Kangwon National University, Chuncheon 24341, Korea;
| | - M. B. Kirkham
- Department of Agronomy, Kansas State University, Manhattan, KS 66506-0110, USA;
| | - Jae E. Yang
- Department of Biological Environment, Kangwon National University, Chuncheon 24341, Korea;
- Correspondence: ; Tel.: +82-33-250-6446
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The identification and performance assessment of dominant bacterial species during linear alkylbenzene sulfonate (LAS)-biodegradation in a bioelectrochemical system. Bioprocess Biosyst Eng 2021; 44:2579-2590. [PMID: 34490522 DOI: 10.1007/s00449-021-02629-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/27/2021] [Indexed: 10/20/2022]
Abstract
The anionic surfactant linear alkylbenzene sulfonate (LAS) is a major chemical constituent of detergent formulation. Regarding the recalcitrant nature of sulfonoaromatic compounds, discharging these substances into wastewater collection systems is a real environmental issue. A study on LAS biodegradation based on bioelectrochemical treatment and in the form of developing a single-chamber microbial fuel cell with air cathode is reported in the present work. Pretreatment study showed LAS concentration of 60 ppm resulted in the highest anaerobic LAS removal of 57%; so, this concentration was chosen to run the MFC. After the sustained anodic biofilm was formed, LAS degradation rate during 4 days in MFC was roughly 76% higher than that in the serum bottle, which indicated the role of the bioelectrochemical process in improving anaerobic LAS removal. Additionally, through 16S rRNA gene sequencing, the dominant bacterial species in the biofilm was identified as Pseudomonas zhaodongensis NEAU-ST5-21(T) with about 98.9% phylogenetic similarity and then a pathway was proposed for LAS anaerobic biodegradation. The MFC characteristics were assessed by pH monitoring as well as scanning electron microscopy and current density evolution.
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Krueger L, Grzemski M, Bilyeu M, Horst J, Ugrin S, Hosette C, Spangler D, Ayangbile G. Methylene blue active substances in plaque of
Bacillus subtilis
subsp.
subtilis
and enrichment by supplemental calcium in culture media. Lett Appl Microbiol 2020; 71:550-556. [DOI: 10.1111/lam.13370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 11/28/2022]
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18
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Wu L, Yang Y, Guo W, Huang W, Peng Z, Zhang Z, Zou M, Luo J. Deterioration of biological pollutants removal induced by linear alkylbenzene sulphonates in sequencing batch reactors: Insight of sludge characteristics, microbial community and metabolic activity. BIORESOURCE TECHNOLOGY 2020; 315:123843. [PMID: 32688258 DOI: 10.1016/j.biortech.2020.123843] [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: 06/13/2020] [Revised: 07/07/2020] [Accepted: 07/10/2020] [Indexed: 06/11/2023]
Abstract
Linear alkylbenzene sulfonates (LAS) are widely detected in wastewater, and pose potential risks to environment. The influences of LAS on the typical pollutants removal in sequencing batch reactors (SBRs) were evaluated. The results indicated that the removal efficiency of COD, NH4+ and PO43- was respectively reduced by 10.5-27.5%, 5.4-7.3% and11.6-28.9% with the exposure of 10-50 mg/L LAS. Mechanisms investigation found that LAS disrupted the sludge structure and reduced the biomass in reactors due to the saponification effects. Also, the presence of LAS altered the microbial community of activated sludge, and reduced the abundances of functional bacterial responsible for pollutants removal (i.e.Candidatus Accumulibacter, Nitrospira, Denitratisoma and etc.). Moreover, the LAS exhibited negative impacts on the microbial activity with increased LDH release but decreased ATP concentration. The genes expressions for microbial metabolism (i.e. carbohydrate metabolisms, energy metabolism) and typical pollutants removal (i.e. electron transport, phosphonate transport) were all downregulated in LAS-exposed SBRs.
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Affiliation(s)
- Lijuan Wu
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China; Jiangsu Academy of Environmental Sciences Environmental Technology Co., Ltd., Jiangsu Environmental Protection Group Co., Ltd., Nanjing 210036, China
| | - Yang Yang
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China; Jiangsu Academy of Environmental Sciences Environmental Technology Co., Ltd., Jiangsu Environmental Protection Group Co., Ltd., Nanjing 210036, China
| | - Wen Guo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Wenxuan Huang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Zhaoqi Peng
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Zhengyong Zhang
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China; Jiangsu Academy of Environmental Sciences Environmental Technology Co., Ltd., Jiangsu Environmental Protection Group Co., Ltd., Nanjing 210036, China
| | - Min Zou
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China
| | - Jingyang Luo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.
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19
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Greywater treatment using modified solar photocatalyst- degradation, kinetics, pathway and toxicity analysis. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117319] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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20
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Escalona-Durán F, Ribeiro da Silva D, Martínez-Huitle CA, Villegas-Guzman P. The synergic persulfate-sodium dodecyl sulfate effect during the electro-oxidation of caffeine using active and non-active anodes. CHEMOSPHERE 2020; 253:126599. [PMID: 32278188 DOI: 10.1016/j.chemosphere.2020.126599] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 03/12/2020] [Accepted: 03/21/2020] [Indexed: 06/11/2023]
Abstract
It has previously been established during the elimination of organic matter that the addition of sodium dodecyl sulfate in solution is an important condition in the electrochemical oxidation approach that allows to increase the production of persulfate, enhancing the efficacy of the treatment. This outcome was observed when using the anodic oxidation with boron doped diamond (BDD), the extra production of persulfate was achieved after the SDS-sulfate released in solution and it reacts with hydroxyl radicals electrogenerated at BDD surface. However, this effect was not already tested by using active anodes. For this reason, the effect of sodium dodecyl sulfate (SDS) during the electrochemical treatment of caffeine was investigated by comparing non-active and active anodes performances. A significant decrease on the oxidation efficiency of caffeine was observed by using Ti/IrO2-Ta2O5 anode at high current density when SDS was added to the solution. Conversely, at BDD anode, the presence of SDS enhanced the degradation efficiency, depending on the applied current density. This behavior is mainly due to the degradation of SDS molecules, which allows to increase the amount of sulfate in solution, promoting the production of persulfate via the mechanism involving hydroxyl radicals when BDD is used. Meanwhile, no oxidation improvements were observed when Ti/IrO2-Ta2O5 anode was employed, limiting the caffeine oxidation. Results clearly showed that the surfactant concentration had little influence on the degradation efficiency, but this result is satisfactory for the BDD system, since it demonstrates that effluents with complex matrices containing surfactants could be effectively degraded using the electrooxidation technique. Degradation mechanisms were explained by electrochemical measurements (polarization curves) as well as the kinetic analysis. Costs and energy consumption were also evaluated.
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Affiliation(s)
- Florymar Escalona-Durán
- Institute of Chemistry, Environmental and Applied Electrochemistry Laboratory, Federal University of Rio Grande do Norte, Lagoa Nova, CEP, 59078-970, Natal, RN, Brazil
| | - Djalma Ribeiro da Silva
- Institute of Chemistry, Environmental and Applied Electrochemistry Laboratory, Federal University of Rio Grande do Norte, Lagoa Nova, CEP, 59078-970, Natal, RN, Brazil
| | - Carlos A Martínez-Huitle
- Institute of Chemistry, Environmental and Applied Electrochemistry Laboratory, Federal University of Rio Grande do Norte, Lagoa Nova, CEP, 59078-970, Natal, RN, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, Unesp, P.O. Box 355, 14800-900, Araraquara, SP, Brazil.
| | - Paola Villegas-Guzman
- Institute of Chemistry, Environmental and Applied Electrochemistry Laboratory, Federal University of Rio Grande do Norte, Lagoa Nova, CEP, 59078-970, Natal, RN, Brazil; Centro de Investigaciones UNINAVARRA - CINA, Fundación Universitaria Navarra - UNINAVARRA, Calle 10 No. 6 - 41. Primer Piso, Neiva, Huila, Colombia.
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21
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Ndiaye A, Andrianisa HA, Saapi SSY, Changotade OA, Adugna AT, Konate Y, Maiga AH. Assessment on overall efficiency of urban greywater treatment by vermifiltration in hot climate: enhanced pollutants removal. ENVIRONMENTAL TECHNOLOGY 2020; 41:2219-2228. [PMID: 30574834 DOI: 10.1080/09593330.2018.1561755] [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: 05/13/2018] [Accepted: 12/13/2018] [Indexed: 06/09/2023]
Abstract
Vermifiltration technology using Eudrilus Eugeniae could be an alternative low-cost option for the treatment of urban greywater, which is highly polluted with high concentrations of surfactants, sodium and cooking oil. In this study, the effects of these pollutants on performance of a vermifiltration system was tested over a period of 6 to 8 weeks by enriching raw greywater with various concentrations of anionic surfactants (0, 15, 45 and 135 mg/L), sodium (0, 1, 2 and 4 g/L) and refined palm cooking oil (0, 250 and 500 mg/L). The vermifilter system was made of gravel, sand and sawdust layers from the bottom to the top, on which 200 earthworms were added. The greywater used in this study was previously used for dishwashing and laundry by an urban poor household. The greywater quality was compared with the effluent to evaluate the system performance. BOD5, COD, TSS and E. coli removal efficiencies ranged from 93% to 98%, 68% to 93%, 88% to 96% and 1.4-3 ULog, respectively, which are within the range of efficiencies reported in the literature. High proportion of surfactants (95-99%) and oil (84-89%) were removed but sodium was not removed. Instead, an increase in sodium concentrations was observed in the filter over the experimental period. Statistical analysis shows that BOD5, COD, TSS and E. coli removal efficiencies were independent of surfactants, cooking oil and sodium concentrations (p < .05). Thus, short term or accidental exposure of the vermifilter to high concentrations of these three pollutants did not have significant effect on the system performance.
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Affiliation(s)
- Awa Ndiaye
- Biological Sciences Department, Peleforo Gon Coulibaly University (UPGC), Korhogo, Ivory Coast
| | - Harinaivo A Andrianisa
- LEHSA Laboratory, International Institute for Water and Environmental Engineering (2iE), Ouagadougou 01, Burkina Faso
| | - Sidesse S Y Saapi
- LEHSA Laboratory, International Institute for Water and Environmental Engineering (2iE), Ouagadougou 01, Burkina Faso
| | - Odilon A Changotade
- LEHSA Laboratory, International Institute for Water and Environmental Engineering (2iE), Ouagadougou 01, Burkina Faso
| | - Amare T Adugna
- LEHSA Laboratory, International Institute for Water and Environmental Engineering (2iE), Ouagadougou 01, Burkina Faso
| | - Yacouba Konate
- LEHSA Laboratory, International Institute for Water and Environmental Engineering (2iE), Ouagadougou 01, Burkina Faso
| | - Amadou H Maiga
- LEHSA Laboratory, International Institute for Water and Environmental Engineering (2iE), Ouagadougou 01, Burkina Faso
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22
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Albert K, Hsieh PY, Chen TH, Hou CH, Hsu HY. Diatom-assisted biomicroreactor targeting the complete removal of perfluorinated compounds. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121491. [PMID: 31690504 DOI: 10.1016/j.jhazmat.2019.121491] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/06/2019] [Accepted: 10/17/2019] [Indexed: 05/09/2023]
Abstract
Persistent perfluorinated compounds (PFCs) have been recognized as a global environmental issue. Developing methods without leading to additional burden in nature will be essential for PFCs removal. Herein, we functionalized iron nanoparticles on living diatom (Dt) to efficiently enable the Fenton reaction and reactive oxygen species (ROS) production. Iron nanoparticles at the surface of living diatom act as promising catalytic agents to trigger OH radical generation from H2O2. Dt plays dual roles: i) as solid support for effective adsorption, and ii) it supplies oxygen and inherently produces ROS under stress conditions, which improves removal efficiency of PFCs. We also demonstrated its reusability by simple magnetic separation and 85% of decomposition efficiency could still be achieved. This newly developed diatom-assisted bioremediation strategy enables green and efficient PFC decomposition and shall be readily applicable to other persistent pollutants.
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Affiliation(s)
- Karunya Albert
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao-Tung University, No.1001 Ta-Hsueh Road, Hsinchu, 30010, Taiwan
| | - Pei-Ying Hsieh
- Center for Emergent Functional Matter Science, National Chiao-Tung University, Hsinchu, Taiwan
| | - Tsai-Hsuan Chen
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4. Roosevelt Rd., Taipei 10617, Taiwan
| | - Chia-Hung Hou
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4. Roosevelt Rd., Taipei 10617, Taiwan
| | - Hsin-Yun Hsu
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao-Tung University, No.1001 Ta-Hsueh Road, Hsinchu, 30010, Taiwan; Center for Emergent Functional Matter Science, National Chiao-Tung University, Hsinchu, Taiwan.
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23
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Hu N, Li Y, Yang C, Wu Z, Liu W. In-situ activated nanoparticle as an efficient and recyclable foam stabilizer for enhancing foam separation of LAS. JOURNAL OF HAZARDOUS MATERIALS 2019; 379:120843. [PMID: 31279309 DOI: 10.1016/j.jhazmat.2019.120843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 04/05/2019] [Accepted: 06/27/2019] [Indexed: 05/07/2023]
Abstract
Linear alkylbenzene sulfonate (LAS) is a particular member of the emerging contaminants, because of its increasingly ubiquitous use and tremendous harm to the environment and wastewater treatment plant. Herein, we develop a novel two-stage foam separation to recover LAS (18.7-91.0 mg/L) from laundry wastewater. We first reported the fabrication of activated silica nanoparticle (SNP) via a facile and scalable in-situ approach. To obtain a desirable surface property, the key design element was the utilization of amphoteric surfactant, viz. cocamidopropyl betaine, as the modifier. In the first-stage, activated SNP could serve as an efficient foam stabilizer to improve the foam stability and the interfacial adsorption of LAS. Remarkably, LAS concentration in effluent decreased to very low levels of 1.9-2.9 mg/L with a proper enrichment ratio, and met the emission standard. In the second-stage, we originally adopted the intensification of liquid drainage to selectively recycle activated SNP from LAS. An inclined foam channel (IFC) covered by hydrophobic coating was constructed and the maximum recovery percentage of SNP reached 91.5%, indicating that the activated SNP was recyclable. This work definitely proves that the integration of nanotechnology in foam separation can make wastewater treatment more efficient and less expensive.
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Affiliation(s)
- Nan Hu
- School of Chemical Engineering and Technology, Hebei University of Technology, No. 8 Guangrong Road, Dingzi Gu, Hongqiao District, Tianjin, 300130, China
| | - Yanfei Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Chunyan Yang
- School of Chemical Engineering and Technology, Hebei University of Technology, No. 8 Guangrong Road, Dingzi Gu, Hongqiao District, Tianjin, 300130, China
| | - Zhaoliang Wu
- School of Chemical Engineering and Technology, Hebei University of Technology, No. 8 Guangrong Road, Dingzi Gu, Hongqiao District, Tianjin, 300130, China.
| | - Wei Liu
- School of Chemical Engineering and Technology, Hebei University of Technology, No. 8 Guangrong Road, Dingzi Gu, Hongqiao District, Tianjin, 300130, China.
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Wang A, Zhu Q, Xing Z. A functionalized chitosan wrinkled hollow sphere containing calcium ions: Efficient adsorption of sodium dodecylbenzenesulfonate (SDBS) from aqueous solutions. J Colloid Interface Sci 2019; 555:203-213. [DOI: 10.1016/j.jcis.2019.07.086] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/26/2019] [Accepted: 07/28/2019] [Indexed: 11/24/2022]
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25
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Karaçali A, Muñoz-Morales M, Kalkan S, Körbahti BK, Saez C, Cañizares P, Rodrigo MA. A comparison of the electrolysis of soil washing wastes with active and non-active electrodes. CHEMOSPHERE 2019; 225:19-26. [PMID: 30856471 DOI: 10.1016/j.chemosphere.2019.02.175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 02/23/2019] [Accepted: 02/25/2019] [Indexed: 06/09/2023]
Abstract
A comparison between the performance of electrolysis of three different soil-washing wastes with platinum and boron doped diamond (BDD) anodes is carried out in this work. Results demonstrate that the treatment is more efficient with BDD for perchloroethylene and clopyralid but not for the case of lindane, because in this case there is a competitive oxidation between lindane and Sodium Dodecyl Sulfate used to extract this pollutant from soil. First order kinetics are observed in each compound with higher removal at the early stages and generally better results are obtained when using BDD as anode. The evolution of pH and a voltammetry study indicate a higher direct oxidation rate in the case of platinum and more importance of hydroxyl radical mediated processes with diamond anodes. Similar speciation is obtained during the electro-oxidation using BDD and platinum electrodes although the concentration of intermediates vary significantly.
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Affiliation(s)
- Atakan Karaçali
- Department of Chemical Engineering, Faculty of Engineering, Mersin University, 33343, Mersin, Turkey
| | - Martin Muñoz-Morales
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - Sabri Kalkan
- Department of Occupational Health and Safety, Vocational School, Toros University, 33140, Mersin, Turkey
| | - Bahadir K Körbahti
- Department of Chemical Engineering, Faculty of Engineering, Mersin University, 33343, Mersin, Turkey
| | - Cristina Saez
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - Pablo Cañizares
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - Manuel A Rodrigo
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain.
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Efficiency of ultrasound for degradation of an anionic surfactant from water: Surfactant determination using methylene blue active substances method. MethodsX 2019; 6:805-814. [PMID: 31061814 PMCID: PMC6487303 DOI: 10.1016/j.mex.2019.03.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 03/28/2019] [Indexed: 11/20/2022] Open
Abstract
The removal of a surfactant from wastewater is usually difficult due to its toxicity and low biodegradability. The aim of this study was to apply sonoreactor for degradation of an anionic surfactant from aqueous solution. An ultrasonic bath with frequency of 130 kHz was used to investigate the effects of different operational parameters such as sonication time, initial concentration and power. In this study, experiments of linear alkylbenzene sulfonates solution were performed using methylene blue active substances method. Experiments were performed at initial concentrations of 0.2 , 0.5 , 0.8 and 1 mg/L, frequency of 130 kHz, acoustic powers value of 400 and 500 W, temperature of 18-20 °C and pH value of 6.8-7. This study showed that linear alkylbenzene sulfonates degradation rate was found to increase with increasing sonication time and power. In addition, as the concentration increased, the linear alkylbenzene sulfonates degradation rate decreased in the ultrasonic reactor. •Surfactants are one of the largest groups of pollutants which exist in almost all urban and many industrial wastewaters.•Ultrasonic reactors alone may not be useful for reducing completely complex wastewaters of high surfactant load.•Application of ultrasonic reactors in combination with other treatment processes including Ozone, UV irradiation, chlorination, Fenton, nanoparticles and H2O2 could be used as a pre-treatment unit in a sequential chemical and biological treatment process.
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27
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Wang A, Zhu Q, Xing Z. Design and synthesis of a calcium modified quaternized chitosan hollow sphere for efficient adsorption of SDBS. JOURNAL OF HAZARDOUS MATERIALS 2019; 369:342-352. [PMID: 30784964 DOI: 10.1016/j.jhazmat.2019.02.047] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/28/2019] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
In this study, a new pleated hollow sphere material (CS@Ca@CTA) was prepared by mixing chitosan (CS) and calcium chloride (CaCl2) in acetic acid solutions followed by crosslinking with glutaraldehyde (GA), and quaternized using (3-chloro-2 hydroxypropyl) trimethylammonium chloride (CTA). The natural biopolymer chitosan (CS) was used to prepare an environmentally friendly adsorbent material which can efficiently adsorb sodium dodecylbenzene sulfonate (SDBS). The adsorption of SDBS on CS@Ca@CTA can be efficiently improved by CTA at different pH values and Ca can promote the precipitation. The adsorption process of SDBS is as follows. First, SDBS can be adsorbed by electrostatic attraction and Cl- of CTA is used to ion exchange DBS- of SDBS. Then DBS- can bind stably with the Ca2+ in a bidentate form. Furthermore, CS contains NH2 and OH groups, which can provide enormous vacant active sites to adsorb SDBS, and a pleated surface have an ability to capture SDBS. The results indicated that the saturated adsorption capacity of CS@Ca@CTA up to 2300 mg g-1 at pH 3.0 within 240 min. Additionally, adsorption kinetics, isotherm and thermodynamic parameters were discussed. The aim of this article is to present CS@Ca@CTA, which has a great effect on adsorbing the SDBS.
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Affiliation(s)
- Aiwen Wang
- School of Chemistry and Materials Science, Heilongjiang University, Key Laboratory of Chemical Engineering Process & Technology for High-efficiency Conversion, Harbin, 150080, China
| | - Qi Zhu
- School of Chemistry and Materials Science, Heilongjiang University, Key Laboratory of Chemical Engineering Process & Technology for High-efficiency Conversion, Harbin, 150080, China.
| | - Zipeng Xing
- School of Chemistry and Materials Science, Heilongjiang University, Key Laboratory of Chemical Engineering Process & Technology for High-efficiency Conversion, Harbin, 150080, China.
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Wu X, Klerks PL, Yuan Z, Zhu X, Ma X, Zhang G, Wang S, Jia Y. Digestive solubilization of particle-associated arsenate by deposit-feeders: The roles of proteinaceous and surfactant materials. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 248:980-988. [PMID: 31091642 DOI: 10.1016/j.envpol.2019.02.076] [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: 11/08/2018] [Revised: 02/14/2019] [Accepted: 02/21/2019] [Indexed: 06/09/2023]
Abstract
Solubilization of arsenate in guts of deposit-feeders is a key process for their dietary uptake of arsenate from contaminated sediments. The present study explored this digestive solubilization with in vitro extraction experiments that quantified arsenic (As) release from substrates (natural sediment and As-enriched iron oxides) in the presence of various digestive agents (proteins, amino acids and surfactants collected from gut fluid of a sipunculan worm). To investigate potential mechanisms for the influence of digestive agents, analyses determined correlations between As and Fe concentrations, the size distribution of the As bound to the digestive agents, and the adsorption of the digestive agents on the substrates. Both the digestive surfactants and proteinaceous materials increased arsenate mobilization, with the surfactants enhancing the effects of the proteinaceous materials. Arsenate reduction and reductive dissolution of iron oxides were not observed and correlations between the concentrations of released As and Fe were weak. These findings indicate that dissolution release of Fe did not appear to be the main route by which the digestive agents mobilized particle-associated As. Most of the released As (>70%) was distributed in the <10 kDa fraction of the digestive agents, showing that the As mobilization was also not caused by complexation with proteins in the digestive agents. In contrast, adsorption of the digestive agents occurred along with the release of arsenate from the arsenate-rich substrates, suggesting that competitive adsorption was the mechanism by which the digestive agents mobilized sedimentary arsenate. Our work demonstrated that the presence of digestive surfactants significantly enhances arsenate availability during deposit feeding.
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Affiliation(s)
- Xing Wu
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Paul L Klerks
- Department of Biology, University of Louisiana at Lafayette, P.O. Box 43602, Lafayette, LA, 70504, United States
| | - Zidan Yuan
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Xiaochen Zhu
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - Xu Ma
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Guoqing Zhang
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Shaofeng Wang
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
| | - Yongfeng Jia
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
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Geravandi S, Mohammadi S, Khayatian G. A green microextraction method for determination of sodium dodecyl sulfate in washing liquid samples based on continuous sample drop flow-based microextraction. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-019-01657-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Barba S, Carvela M, Villaseñor J, Rodrigo MA, Cañizares P. Improvement of the electro-bioremediation process of a non-polar herbicide-polluted soil by means of surfactant addition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:1961-1968. [PMID: 30290338 DOI: 10.1016/j.scitotenv.2018.09.338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/18/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
Oxyfluorfen is a non-polar herbicide that may cause severe soil pollution. The present work studies the possible improvement due to surfactant addition in the efficiency of electro-bioremediation of a clay soil polluted which such a non-polar, low-mobility pollutant. Two-week-long batch electro-bioremediation experiments were performed in a bench-scale device. Oxyfluorfen-polluted soil (20 mg kg-1) was inoculated with an acclimated microbial culture, and several experiments were performed using different surfactant concentrations in the electrode wells (0.0, 2.5, 5.0, 10.0 and 20.0 g L-1 of SDS, sodium dodecyl sulphate). Experiments were performed under 1.0 V cm-1 and electrode polarity reversal. It was observed that the electro-osmotic flow (EOF) increased with SDS concentration and that SDS was successfully distributed across the soil, probably improving the oxyfluorfen mobility. Additionally, microbiological activity was fully maintained during the experiments. Electro-bioremediation without SDS removed 14% of the oxyfluorfen, while under 2.5 g L-1 SDS, the efficiency increased to 22% because of an expected improvement in the contact between the different species in the soil. However, higher SDS concentrations (between 10.0 and 20.0 g L-1) caused a decrease in the oxyfluorfen removal efficiency, as SDS is an easily biodegradable compound and was preferably used as substrate by the microbial culture instead of oxyfluorfen. Additionally, the use of high concentrations of SDS was clearly inefficient, as high amounts of the surfactant were lost through the EOF, and even low amounts of oxyfluorfen were removed to the electrode wells, which means that ex situ treatment of the polluted water would be needed.
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Affiliation(s)
- Silvia Barba
- Chemical Engineering Department, Research Institute for Chemical and Environmental Technology (ITQUIMA), University of Castilla-La Mancha, 13071 Ciudad Real, Spain.
| | - Mireya Carvela
- Chemical Engineering Department, Research Institute for Chemical and Environmental Technology (ITQUIMA), University of Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - José Villaseñor
- Chemical Engineering Department, Research Institute for Chemical and Environmental Technology (ITQUIMA), University of Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Manuel A Rodrigo
- Chemical Engineering Department, Faculty of Chemical Sciences and Technology, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Pablo Cañizares
- Chemical Engineering Department, Faculty of Chemical Sciences and Technology, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
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Qiu Y, Xu M, Sun Z, Li H. Remediation of PAH-Contaminated Soil by Combining Surfactant Enhanced Soil Washing and Iron-Activated Persulfate Oxidation Process. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16030441. [PMID: 30717404 PMCID: PMC6388178 DOI: 10.3390/ijerph16030441] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/29/2019] [Accepted: 01/31/2019] [Indexed: 11/16/2022]
Abstract
There is increasing concern regarding soils contaminated with polycyclic aromatic hydrocarbons (PAHs). In the present study, the remediation of soil spiked with PAHs was explored by the combination of soil washing with sodium dodecyl sulfate (SDS) and subsequent oxidation through persulfate (PS) activated by Fe2+, nanoscale zero-valent iron (nZVI), and SiO₂-coated nZVI (SiO₂/nZVI). Results demonstrated that the removal of phenanthrene (PHE), fluoranthene (FLU), and pyrene (PYR) by SDS is an efficient means for soil decontamination. At SDS concentration of 20 g/L, the removal efficiencies of PHE, PYR, and FLU were 37%, 40%, and 44%, respectively. For the degradation of PAHs and SDS in the soil washing effluents, the efficiencies of PS activated with SiO₂/nZVI were not significantly different from those of PS activated with nZVI and Fe2+ (p > 0.05). In practice, SiO₂/nZVI is more preferable due to the improved antioxidation and dispersibility. At the dosage of 2 g/L (in the amount of iron) of SiO₂/nZVI, the removal efficiencies of PHE, FLU, PYR, and SDS within 30 min of treatment were 75%, 85%, 87%, and 34%, respectively. The degradation of SDS was much lower than those of PAHs, which facilitated the recycle of SDS. Our findings suggest that PS activated with SiO₂/nZVI is a promising method for the treatment of soil washing effluents containing SDS and PAHs.
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Affiliation(s)
- Yanhua Qiu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Meilan Xu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Zongquan Sun
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Helian Li
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
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Prabha SP, Karthik C, Chandrika SH. Phytol – A biosurfactant from the aquatic weed Hydrilla verticillata. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.01.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Fedeila M, Hachaïchi-Sadouk Z, Bautista LF, Simarro R, Nateche F. Biodegradation of anionic surfactants by Alcaligenes faecalis, Enterobacter cloacae and Serratia marcescens strains isolated from industrial wastewater. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 163:629-635. [PMID: 30096664 DOI: 10.1016/j.ecoenv.2018.07.123] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 07/29/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
Pseudo-persistent organic pollutants, such as anionic surfactants (AS), are nowadays among the more complex problems that threaten the aquatic environments and other environmental compartments. The present work describes the identification and efficiency of a consortium, isolated from Algerian industrial wastewater, to remove three anionic surfactants (i.e., sodium dodecylbenzenesulfonate (SDBS), sodium dodecyl sulfate (SDS) and sodium lauryl ether sulfate (SLES)). The genetic analysis of 16S rRNA indicated that these strains are Alcaligenes faecalis, Enterobacter cloacae and Serratia marcescens. Under aerobic conditions, pH 7.0 and optimum temperature of 30 °C, the mixed consortium allowed to degrade 85.1% of initial SDBS amount after 144 h of incubation with half-life of 20.8 h. While E. cloacae and S. marcescens pure strains eliminated 46% and 41% less SDBS respectively. Evenly, SDS was degraded at only 23.71% by A. faecalis strain. However, the degradation capacity of SDS by the consortium was very high (94.2%) with a half-life of 9.8 h. The SLES anionic surfactant showed a lower biodegradation by the consortium (47.53%) due to the presence of ether oxide units in the chemical structure of SLES which induced toxicity to the medium. The investigation of the biodegradation of this type of organic pollutants by microorganisms has recently become a key issue for the environmental protection area.
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Affiliation(s)
- Mourad Fedeila
- Laboratory of Applied Organic Chemistry, Faculty of Chemistry, University of Sciences and Technology of Houari Boumediene (USTHB), PO Box 32, El Alia, Bab Ezzouar 16111, Algiers, Algeria.
| | - Zohra Hachaïchi-Sadouk
- Laboratory of Applied Organic Chemistry, Faculty of Chemistry, University of Sciences and Technology of Houari Boumediene (USTHB), PO Box 32, El Alia, Bab Ezzouar 16111, Algiers, Algeria
| | - Luis Fernando Bautista
- Department of Chemical and Environmental Technology, ESCET, Universidad Rey Juan Carlos, C/ Tulipán s/n, 28933 Móstoles, Madrid, Spain
| | - Raquel Simarro
- Department of Biology and Geology, Physics and Inorganic Chemistry, ESCET, Universidad Rey Juan Carlos, C/ Tulipán s/n, 28933 Móstoles, Madrid, Spain
| | - Farida Nateche
- Laboratory of Cellular and Molecular Biology, Microbiology Team, Faculty of Biological Sciences, University of Sciences and Technology of Houari Boumediene (USTHB), PO Box 32, El Alia, Bab Ezzouar 16111, Algiers, Algeria
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Ganiyu SO, Vieira Dos Santos E, Tossi de Araújo Costa EC, Martínez-Huitle CA. Electrochemical advanced oxidation processes (EAOPs) as alternative treatment techniques for carwash wastewater reclamation. CHEMOSPHERE 2018; 211:998-1006. [PMID: 30119031 DOI: 10.1016/j.chemosphere.2018.08.044] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 05/07/2023]
Abstract
Electrochemical advanced oxidation processes such as electrooxidation (EO), electrooxidation with hydrogen peroxide generation (EO-H2O2) and electro-Fenton process (EF) have been investigated as alternative treatment techniques for complete removal of anionic surfactants and organic matters from real carwash wastewater. The electrochemical processes were performed with acidified real carwash wastewater using boron doped anode and carbon felt cathode. In all cases, the chemical oxygen demand (COD) removal efficiency was always increased with rise in applied current and complete organic matter decay was achieved at applied current of 500 mA or above after 6 h of electrolysis. Faster and higher COD decay was observed with EF compared to either EO or EO-H2O2 treatment, at all currents and electrolysis time. Besides, complete degradation of anionic surfactants - the major organic content of the wastewater could be achieved at all applied currents studied irrespective of the process used, indicating the efficacy of processes for total remediation of real carwash wastewater. The short-chain carboxylic acids formed as the final organic byproducts were identified and quantified by ion-exclusion chromatography. More so, lower energy consumption and higher current efficiency were achieved with EF compared to EO-H2O2. Electrochemical treatment was found to be a powerful technology for the complete abatement of organic matter in carwash wastewater for possible reuse.
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Affiliation(s)
- Soliu O Ganiyu
- Institute of Chemistry, Federal University of Rio Grande do Norte, Lagoa Nova, CEP 59078-970, Natal, RN, Brazil.
| | - Elisama Vieira Dos Santos
- Science and TechnologySchool, Federal University of Rio Grande do Norte, Lagoa Nova, CEP 59078-970, Natal, RN, Brazil
| | | | - Carlos A Martínez-Huitle
- Institute of Chemistry, Federal University of Rio Grande do Norte, Lagoa Nova, CEP 59078-970, Natal, RN, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, Unesp, P.O. Box 355, 14800-900 Araraquara, SP, Brazil.
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Zhu X, Dudchenko AV, Khor CM, He X, Ramon GZ, Jassby D. Field-Induced Redistribution of Surfactants at the Oil/Water Interface Reduces Membrane Fouling on Electrically Conducting Carbon Nanotube UF Membranes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:11591-11600. [PMID: 30221512 DOI: 10.1021/acs.est.8b02578] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Membrane-based treatment of oily wastewater remains a significant challenge, particularly under high salinity conditions. The main difficulty associated with this separation process is membrane fouling, mostly caused by wetting and coalescence of emulsified oil droplets on the membrane surface. In this study, electrically conducting carbon nanotube-based ultrafiltration membranes were used to treat an emulsified oil suspension at ionic strengths as high as 100 mM. By tuning the electrical potential applied to the membrane surface, we demonstrate how fouling can be dramatically reduced, even under high salinity conditions. Permeate water quality is shown to improve upon application of a negative potential. Using optical microscopy, we observed dramatic changes in the shape of oil droplets at the membrane/water interface in response to the applied electric potential; this change is associated with a redistribution of charged surfactant molecules at the oil/water interface in response to the external electric field. Specifically, using the membrane as a cathode repels surfactant molecules away from the oil/membrane interface, while anodic conditions lead to increased surfactant concentrations. We speculate that this change in surfactant molecule distribution is responsible for changes in the surface tension of oil droplets at the membrane/water interface, which results in a decrease in oil coalescence and subsequent fouling. The membranes used in this study offer an attractive treatment option when separating emulsified oil from water under high salinity conditions.
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Affiliation(s)
- Xiaobo Zhu
- Department of Civil and Environmental Engineering , University of California , Los Angeles, Los Angeles , California 90095 , United States
| | - Alexander V Dudchenko
- Department of Civil and Environmental Engineering , Carnegie Mellon University , Pittsburgh , Pennsylvania 15213 , United States
| | - Chia Miang Khor
- Department of Civil and Environmental Engineering , University of California , Los Angeles, Los Angeles , California 90095 , United States
| | - Xin He
- The College of Environmental Science and Engineering , Nankai University , Tianjin , China
| | - Guy Z Ramon
- Department of Civil and Environmental Engineering , Technion - Israel Institute of Technology , Haifa , Israel
| | - David Jassby
- Department of Civil and Environmental Engineering , University of California , Los Angeles, Los Angeles , California 90095 , United States
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Pagenkopp MJ, Mason TG. Surfactant Partitioning in Nanoemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10309-10320. [PMID: 30048593 DOI: 10.1021/acs.langmuir.8b01099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Using a fractionated silicone oil-in-water nanoemulsion (NEM), which has a high ratio of surface area-to-volume, we investigate surfactant partitioning between the bulk continuous phase and the adsorbed interfacial phase. By adjusting the droplet volume fraction of this fractionated NEM and by using gravimetric and electrical conductivity methods, we measure the bulk and the surface concentrations of an ionic surfactant (sodium dodecyl sulfate, SDS), thereby obtaining a raw adsorption isotherm of SDS on the interfaces of the nanodroplets. To overcome significant uncertainties in the total surface area of this nanoemulsion, we have also measured the macroscopic interfacial tension (IFT) of silicone oil in contact with aqueous SDS solutions using the du Noüy ring method. We then scale the surface concentration of this raw isotherm using an appropriate Gibbs derivative based on the IFT measurement, yielding an adjusted isotherm. We show that this adjusted isotherm can be described using a simple Langmuir equation. In addition, we show that a significant and non-negligible percentage of surfactant typically partitions to nanodroplet interfaces after high-flow-rate emulsification (HFRE) has transformed a microscale premix emulsion into a NEM. We develop a model for predicting the final bulk surfactant concentration after HFRE given the initial bulk surfactant concentration before HFRE. We show that this model can be used to predict trends for surfactant partitioning in polydisperse nanoemulsions after HFRE.
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Green assay of anionic surfactant via ion-association with methylene blue sorbed on polyurethane foam monolithic rod and using a smartphone. Talanta 2018; 190:85-88. [PMID: 30172545 DOI: 10.1016/j.talanta.2018.07.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 07/20/2018] [Accepted: 07/21/2018] [Indexed: 11/23/2022]
Abstract
Anionic surfactant as sodium dodecyl sulfate (SDS) can be assayed by using methylene blue (MB). The ion-association of SDS-MB can be extracted solventless but sorbed on a specified polyurethane foam (PUF) monolithic rod, prepared in the lab by mixing polyether with methylene diphenyl diisocyanate (MDI). The blue product (the ion-association of SDS-MB) on the rod can be followed by a smartphone (iPhone 6S). With a set of conditions, a single standard calibration can be applied. The proposed green analytical procedure can be employed for on-site assay. Application to real water samples was demonstrated.
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Ziółkowska D, Lamkiewicz J, Shyichuk A. Determination of Sodium Dodecyl Sulfate by Means of Photometric Titration with o
-Toluidine Blue Dye. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Dorota Ziółkowska
- UTP University of Science and Technology; Faculty of Chemical Technology and Engineering, Seminaryjna 3; 85-326 Bydgoszcz Poland
| | - Jan Lamkiewicz
- UTP University of Science and Technology; Faculty of Chemical Technology and Engineering, Seminaryjna 3; 85-326 Bydgoszcz Poland
| | - Alexander Shyichuk
- UTP University of Science and Technology; Faculty of Chemical Technology and Engineering, Seminaryjna 3; 85-326 Bydgoszcz Poland
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Sini K, Idouhar M, Ahmia AC, Ferradj A, Tazerouti A. Spectrophotometric determination of anionic surfactants: optimization by response surface methodology and application to Algiers bay wastewater. ENVIRONMENTAL MONITORING AND ASSESSMENT 2017; 189:646. [PMID: 29170832 DOI: 10.1007/s10661-017-6359-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 11/07/2017] [Indexed: 06/07/2023]
Abstract
A simple analytical method for quantitative determination of an anionic surfactant in aqueous solutions without liquid-liquid extraction is described. The method is based on the formation of a green-colored ion associate between sodium dodecylbenzenesulfonate (SDBS) and cationic dye, Brilliant Green (BG) in acidic medium. Spectral changes of the dye by addition of SDBS are studied by visible spectrophotometry at maximum wave length of 627 nm. The interactions and micellar properties of SDBS and cationic dye are also investigated using surface tension method. The pH, the molar ratio ([BG]/[SDBS]), and the shaking time of the solutions are considered as the main parameters which affect the formation of the ion pair. Determination of AS in distilled water gives a significant detection limit up to 3 × 10-6 M. The response surface methodology (RSM) is applied to study the absorbance. A Box-Behnken is a model designed to the establishment of responses given by parameters with great probability. This model is set up by using the three main parameters at three levels. Analysis of variance shows that only two parameters affect the absorbance of the ion pair. The statistical results obtained are interesting and give us real possibility to reach optimum conditions for the formation of the ion pair. As the proposed method is free from interferences from major constituents of water, it has been successfully applied to the determination of anionic surfactant contents in wastewaters samples collected from Algiers bay.
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Affiliation(s)
- Karima Sini
- ICSM, Institut de Chimie Séparative de Marcoule UMR 5257, CEA, CNRS, ENSCM, UM, Bat 426, BP 17171, 30207, Bagnols-sur-Cèze Cedex, France.
- Laboratory of Applied Organic Chemistry, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria.
| | - Madjid Idouhar
- Laboratory of Applied Organic Chemistry, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria
| | - Aida-Cherifa Ahmia
- Laboratory of Applied Organic Chemistry, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria
| | - Abdelhak Ferradj
- Laboratory of Applied Organic Chemistry, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria
| | - Ammal Tazerouti
- Laboratory of Applied Organic Chemistry, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria
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Icgen B, Salik SB, Goksu L, Ulusoy H, Yilmaz F. Higher alkyl sulfatase activity required by microbial inhabitants to remove anionic surfactants in the contaminated surface waters. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 76:2357-2366. [PMID: 29144294 DOI: 10.2166/wst.2017.402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Biodegradation of anionic surfactants, like sodium dodecyl sulfate (SDS) are challenged by some bacteria through the function of the enzyme alkyl sulfatases. Therefore, identifying and characterizing bacteria capable of degrading SDS with high alkyl sulfatase enzyme activity are pivotal. In this study, bacteria isolated from surfactant contaminated river water were screened for their potential to degrade SDS. Primary screening carried out by the conventional enrichment culture technique and assessment of SDS-degrading ability through methylene blue active substance assay revealed 12, out of 290, SDS-degrading surface water bacteria with maximum SDS degrading abilities of 46-94% in 24-54 h. The isolates exhibited optimum growth at SDS concentration of 1 g/L, but tolerated up to 15-75 g/L. Eleven isolates were identified as the species of Pseudomonas and one isolate was identified as Aeromonas through 16S rRNA sequencing. Proteolytic activity of alkyl sulfatases in the identified isolates was shown by using native-PAGE analysis. The determined enzyme activities changed in between 1.32 and 2.90 U/mg in the crude extracts. Preliminary experiments showed that the isolates with the alkyl sulfatase enzyme activities ≥2.50 U/mg were strong gratuitous degraders. However, their relative importance in soil, sewage, and wastewater treatment plants remains to be assessed.
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Affiliation(s)
- Bulent Icgen
- Department of Environmental Engineering, Middle East Technical University, Ankara 06800, Turkey E-mail:
| | | | - Lale Goksu
- Department of Biology, Kırıkkale University, Kırıkkale 71450, Turkey
| | - Huseyin Ulusoy
- Department of Biology, Kırıkkale University, Kırıkkale 71450, Turkey
| | - Fadime Yilmaz
- Department of Environmental Engineering, Middle East Technical University, Ankara 06800, Turkey E-mail:
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Muñoz-Morales M, Braojos M, Sáez C, Cañizares P, Rodrigo MA. Remediation of soils polluted with lindane using surfactant-aided soil washing and electrochemical oxidation. JOURNAL OF HAZARDOUS MATERIALS 2017; 339:232-238. [PMID: 28654787 DOI: 10.1016/j.jhazmat.2017.06.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 06/07/2017] [Accepted: 06/10/2017] [Indexed: 06/07/2023]
Abstract
In this work the complete treatment of soil spiked with lindane is studied using surfactant-aided soil-washing (SASW) to exhaust lindane from soil and electrolysis with diamond anodes to mineralize lindane from the soil washing fluid (SWF) waste. Results demonstrated that this technological approach is efficient and allow to remove this hazardous pollutant from soil. They also pointed out the significance of the ratio surfactant/soil in the efficiency of the SASW process and in the performance of the later electrolysis used to mineralize the pollutant. Larger values of this parameter lead to effluents that undergo a very efficient treatment which allows the depletion of lindane for applied charges lower than 15AhL-1 and the recovery of more than 70% of the surfactant for the regeneration of the SWF.
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Affiliation(s)
- M Muñoz-Morales
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - M Braojos
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - C Sáez
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - P Cañizares
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - M A Rodrigo
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Campus Universitario s/n, 13005, Ciudad Real, Spain.
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42
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Rojas-Z U, Fajardo-O C, Moreno-Andrade I, Monroy O. Greywater treatment in an aerobic SBR: sludge structure and kinetics. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 76:1535-1544. [PMID: 28953479 DOI: 10.2166/wst.2017.341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In order to have an efficient operation, sequencing batch reactors (SBR) must support granular biomass with high conversion rates, settling properties, and be able to deal with the inherent variability of the composition of real wastewaters. In this study, the effect of the influent composition and the specific organic loading rate (Bx) on the granulation process was evaluated in two SBRs, fed with greywater (GW) and a synthetic medium (SM). The feeding with SM led to the formation of compact granular biomass, with a sludge volume index (SVI) of 22.4 mL g-1, and a zone settling velocity (ZSV) of 13.1 m h-1. In contrast, feeding with GW induced the formation of filamentous granules, with lower settling properties (SVI = 165 mL g-1 and ZSV = 10 m h-1), when the system was operated at high Bx (4.4 kg COD kg VSS-1 d-1). However, the reduction of the average Bx to 2 kg COD kg VSS-1 d-1 induced an improvement in the morphology and properties of the granules (SVI = 98 mL g-1 and ZSV = 13 m h-1). Furthermore, the kinetic analysis indicated that granules cultivated with SM were formed by fast growing microorganisms with a high cell yield, whereas those cultivated in GW presented a much lower cell yield.
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Affiliation(s)
- U Rojas-Z
- Department of Biotechnology, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, Mexico City 09340, Mexico E-mail:
| | - C Fajardo-O
- Department of Biotechnology, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, Mexico City 09340, Mexico E-mail:
| | - I Moreno-Andrade
- Laboratory for Research on Advanced Processes for Water Treatment, Engineering Institute, Unidad Académica Juriquilla, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro 76230, Mexico
| | - O Monroy
- Department of Biotechnology, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, Mexico City 09340, Mexico E-mail:
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Ríos F, Fernández-Arteaga A, Lechuga M, Fernández-Serrano M. Ecotoxicological characterization of polyoxyethylene glycerol ester non-ionic surfactants and their mixtures with anionic and non-ionic surfactants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:10121-10130. [PMID: 28258428 DOI: 10.1007/s11356-017-8662-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 02/19/2017] [Indexed: 05/27/2023]
Abstract
This paper reports on a study that investigated the aquatic toxicity of new non-ionic surfactants derived from renewable raw materials, polyoxyethylene glycerol ester (PGE), and their binary mixtures with anionic and non-ionic surfactants. Toxicity of pure PGEs was determined using representative organisms from different trophic levels: luminescent bacteria (Vibrio fischeri), microalgae (Pseudokirchneriella subcapitata), and freshwater crustaceans (Daphnia magna). Relationships between toxicity and the structural parameters such as unit of ethylene oxide (EO) and hydrophilic-lipophilic balance (HLB) were evaluated. Critical micellar concentration (CMC) in the conditions of the toxicity test was also determined. It was found that the toxicity of the aqueous solutions of PGE decreased when the number of EO units in the molecule, HLB, and CMC increased. PGEs showed lower CMC in marine medium, and the toxicity to V. ficheri is lower when the CMC was higher. Given their non-polar nature, narcosis was expected to be the primary mode of toxic action of PGEs. For the mixture of surfactants, we observed that the mixtures with PGE that had the higher numbers of EO units were more toxic than the aqueous solutions of pure surfactants. Moreover, we found that concentration addition was the type of action more likely to occur for mixtures of PGE with lower numbers of EO units with non-ionic surfactants (alkylpolyglucoside and fatty alcohol ethoxylate), whereas for the mixture of PGE with lower EO units and anionic surfactant (ether carboxylic derivative), the most common response type was response addition. In case of mixtures involving amphoteric surfactants and PGEs with the higher numbers of EO units, no clear pattern with regard to the mixture toxicity response type could be observed.
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Affiliation(s)
- Francisco Ríos
- Department of Chemical Engineering, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, 18071, Granada, Spain
| | - Alejandro Fernández-Arteaga
- Department of Chemical Engineering, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, 18071, Granada, Spain
| | - Manuela Lechuga
- Department of Chemical Engineering, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, 18071, Granada, Spain
| | - Mercedes Fernández-Serrano
- Department of Chemical Engineering, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, 18071, Granada, Spain.
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Vieira Dos Santos E, Sáez C, Cañizares P, Martínez-Huitle CA, Rodrigo MA. Treating soil-washing fluids polluted with oxyfluorfen by sono-electrolysis with diamond anodes. ULTRASONICS SONOCHEMISTRY 2017; 34:115-122. [PMID: 27773225 DOI: 10.1016/j.ultsonch.2016.05.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 05/05/2016] [Accepted: 05/18/2016] [Indexed: 06/06/2023]
Abstract
This works is focused on the treatment by sono-electrolysis of the liquid effluents produced during the Surfactant-Aided Soil-Washing (SASW) of soils spiked with herbicide oxyfluorfen. Results show that this combined technology is very efficient and attains the complete mineralization of the waste, regardless of the surfactant/soil radio applied in the SASW process (which is the main parameter of the soil remediation process and leads to very different wastes). Both the surfactant and the herbicide are completely degraded, even when single electrolysis is used; and only two intermediates are detected by HPLC in very low concentrations. Conversely, the efficiency of single sonolysis approach, for the oxidation of pollutant, is very low and just small changes in the herbicides and surfactant concentrations are observed during the tests carried out. Sono-electrolysis with diamond electrodes achieved higher degradation rates than those obtained by single sonolysis and/or single electrolysis with diamond anodes. A key role of sulfate is developed, when it is released after the electrochemical degradation of surfactant. The efficient catalytic effect observed which can be explained by the anodic formation of persulfate and the later, a sono-activation is attained to produce highly efficient sulfate radicals. The effect of irradiating US is more importantly observed in the pesticide than in the surfactant, in agreement with the well-known behavior of these radicals which are known to oxidize more efficiently aromatic compounds than aliphatic species.
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Affiliation(s)
- E Vieira Dos Santos
- School of Science and Technology, Federal University of Rio Grande do Norte, 59078-970 Natal, Brazil
| | - C Sáez
- Department of Chemical Engineering, Enrique Costa Novella Building, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - P Cañizares
- Department of Chemical Engineering, Enrique Costa Novella Building, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - C A Martínez-Huitle
- Institute of Chemistry, Federal University of Rio Grande do Norte, 59078-970 Natal, Brazil
| | - M A Rodrigo
- Department of Chemical Engineering, Enrique Costa Novella Building, Campus Universitario s/n, 13071 Ciudad Real, Spain.
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Rahman M, Rusnam M, Gusmanizar N, Masdor N, Lee C, Shukor M, Roslan M, Shukor M. Molybdate-reducing and SDS-degrading Enterobacter sp. Strain Neni-13. NOVA BIOTECHNOLOGICA ET CHIMICA 2016. [DOI: 10.1515/nbec-2016-0017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractToxicants removal through microorganism’s action is intensely being sought due to economic reasons. The aim of this paper is to isolate a bacterium that is able to reduce molybdenum blue and at the same time can grow on the detergent Sodium Dodecyl Sulfate (SDS). Biochemical analysis resulted in a tentative identification of the bacterium as Enterobacter sp. strain Neni-13. Growth on SDS showed a 100 % removal at 800 mg/L SDS within 12 days. The removal of SDS from media was confirmed through Methylene Blue Active Substances Assay. Molybdenum reduction using sodium molybdate as a substrate was characterized using a microplate assay. The optimum pH and temperature for molybdenum reduction was between 6.0 and 6.5, and at 37 °C, respectively. Glucose was the best electron donor for molybdate reduction. Phosphate and molybdate concentrations of between 2.5 and 5.0 mM and at 15 mM, were optimal for molybdate reduction, respectively. Molybdate reduction was inhibited by the heavy metals mercury, silver, copper and chromium at 2 ppm. The ability of this bacterium to detoxify molybdate and degrade the SDS makes this bacterium an important tool for bioremediation of toxicants in soil.
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Affiliation(s)
- M.F. Rahman
- 1 Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM 43400, Selangor, Malaysia
| | - M. Rusnam
- 2 Department of Agricultural Engineering, Faculty of Agricultural Technology, Andalas University, Padang, 25163, Indonesia
| | - N. Gusmanizar
- 1 Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM 43400, Selangor, Malaysia
- 3 Department of Animal Nutrition, Faculty of Animal Science, Andalas University, Padang, 25163, Indonesia
| | - N.A. Masdor
- 4 Biotechnology Research Centre, MARDI, P. O. Box 12301, Kuala Lumpur, 50774, Malaysia
| | - C.H. Lee
- 1 Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM 43400, Selangor, Malaysia
| | - M.S. Shukor
- 5 Snoc International Sdn Bhd, Lot 343, Jalan 7/16 Kawasan Perindustrian Nilai 7, Inland Port, Negeri Sembilan, 71800, Malaysia
| | - M.A.H. Roslan
- 1 Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM 43400, Selangor, Malaysia
| | - M.Y. Shukor
- 1 Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, UPM 43400, Selangor, Malaysia
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Theodoridis K, Müller J, Ramm R, Findeisen K, Andrée B, Korossis S, Haverich A, Hilfiker A. Effects of combined cryopreservation and decellularization on the biomechanical, structural and biochemical properties of porcine pulmonary heart valves. Acta Biomater 2016; 43:71-77. [PMID: 27422199 DOI: 10.1016/j.actbio.2016.07.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 06/30/2016] [Accepted: 07/11/2016] [Indexed: 12/24/2022]
Abstract
UNLABELLED Non-fixed, decellularized allogeneic heart valve scaffolds seem to be the best choice for heart valve replacement, their availability, however, is quite limited. Cryopreservation could prolong their shelf-life, allowing for their ideal match to a recipient. In this study, porcine pulmonary valves were decellularized using detergents, either prior or after cryopreservation, and analyzed. Mechanical integrity was analyzed by uniaxial tensile testing, histoarchitecture by histological staining, and composition by DNA, collagen (hydroxyproline) and GAG (chondroitin sulfate) quantification. Residual sodium dodecyl sulfate (SDS) in the scaffold was quantified by applying a methylene blue activation assay (MBAS). Cryopreserved decellularized scaffolds (DC) and scaffolds that were decellularized after cryopreservation (CD) were compared to fresh valves (F), cryopreserved native valves (C), and decellularized only scaffolds (D). The E-modulus and tensile strength of decellularized (D) tissue showed no significant difference compared to DC and CD. The decellularization resulted in an overall reduction of DNA and GAG, with DC containing the lowest amount of GAGs. The DNA content in the valvular wall of the CD group was higher than in the D and DC groups. CD valves showed slightly more residual SDS than DC valves, which might be harmful to recipient cells. In conclusion, cryopreservation after decellularization was shown to be preferable over cryopreservation before decellularization. However, in vivo testing would be necessary to determine whether these differences are significant in biocompatibility or immunogenicity of the scaffolds. STATEMENT OF SIGNIFICANCE Absence of adverse effects on biomechanical stability of acellular heart valve grafts by cryopreservation, neither before nor after decellularization, allows the identification of best matching patients in a less time pressure dictated process, and therefore to an optimized use of a very limited, but best-suited heart valve prosthesis.
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Alexandre B, Barbara G, Laure W, Bruno D, Adriana GO, Emmanuelle V. Development of a multiple-class analytical method based on the use of synthetic matrices for the simultaneous determination of commonly used commercial surfactants in wastewater by liquid chromatography-tandem mass spectrometry. J Chromatogr A 2016; 1450:64-75. [DOI: 10.1016/j.chroma.2016.04.078] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 04/25/2016] [Accepted: 04/27/2016] [Indexed: 11/30/2022]
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Li B, Li W, Xu Y, Li J, Tu J, Sun S. A simple approach for the discrimination of surfactants based on the control of squaraine aggregation. Chem Commun (Camb) 2016; 51:14652-5. [PMID: 26291579 DOI: 10.1039/c5cc06086a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The color of squaraine solution shows a "fingerprint" change upon addition of different surfactants. A cross-responsive sensing array based on a small molecular probe was applied to discriminate surfactants with 100% confidence limits. Furthermore, the probe can selectively detect sodium dodecyl sulfate (SDS) with turn-on fluorescence response.
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Affiliation(s)
- Benhao Li
- College of Science, Northwest A & F University, Yangling, Shaanxi 712100, P. R. China.
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49
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Using Hemolysis as a Novel Method for Assessment of Cytotoxicity and Blood Compatibility of Decellularized Heart Tissues. ASAIO J 2016; 62:340-8. [DOI: 10.1097/mat.0000000000000373] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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50
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Dos Santos EV, Sáez C, Martínez-Huitle CA, Cañizares P, Rodrigo MA. Removal of oxyfluorfen from ex-situ soil washing fluids using electrolysis with diamond anodes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 171:260-266. [PMID: 26846982 DOI: 10.1016/j.jenvman.2016.01.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 12/29/2015] [Accepted: 01/21/2016] [Indexed: 06/05/2023]
Abstract
In this research, firstly, the treatment of soil spiked with oxyfluorfen was studied using a surfactant-aided soil-washing (SASW) process. After that, the electrochemical treatment of the washing liquid using boron doped diamond (BDD) anodes was performed. Results clearly demonstrate that SASW is a very efficient approach in the treatment of soil, removing the pesticide completely by using dosages below 5 g of sodium dodecyl sulfate (SDS) per Kg of soil. After that, complete mineralization of organic matter (oxyflourfen, SDS and by-products) was attained (100% of total organic carbon and chemical oxygen demand removals) when the washing liquids were electrolyzed using BDD anodes, but the removal rate depends on the size of the particles in solution. Electrolysis of soil washing fluids occurs via the reduction in size of micelles until their complete depletion. Lower concentrations of intermediates are produced (sulfate, chlorine, 4-(trifluoromethyl)-phenol and ortho-nitrophenol) during BDD-electrolyzes. Finally, it is important to indicate that, sulfate (coming from SDS) and chlorine (coming from oxyfluorfen) ions play an important role during the electrochemical organic matter removal.
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Affiliation(s)
- Elisama Vieira Dos Santos
- Institute of Chemistry, Federal University of Rio Grande do Norte, Lagoa Nova CEP 59078-970, Natal, RN, Brazil
| | - Cristina Sáez
- Department of Chemical Engineering, Universidad de Castilla - La Mancha, Enrique Costa Building, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | | | - Pablo Cañizares
- Department of Chemical Engineering, Universidad de Castilla - La Mancha, Enrique Costa Building, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - Manuel Andres Rodrigo
- Department of Chemical Engineering, Universidad de Castilla - La Mancha, Enrique Costa Building, Campus Universitario s/n, 13071, Ciudad Real, Spain
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