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Liu J, Zhao B, Wang L, Zhang W, Zan T, Chen Z, Li Y. Occurrence, fate, and transport of N-nitrosamines and precursors in sewage treatment plants and receiving rivers in a highly urbanized basin. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2025; 368:125808. [PMID: 39914564 DOI: 10.1016/j.envpol.2025.125808] [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: 11/14/2024] [Revised: 01/17/2025] [Accepted: 02/03/2025] [Indexed: 02/09/2025]
Abstract
N-nitrosamines (NAs), highly carcinogenic disinfection by-products, were frequently detected in raw sewage, sewage treatment plants (STPs), and receiving rivers. This study investigated five NAs, including N-nitrosodimethylamine (NDMA), N-nitrosodiethylamine (NDEA), N-nitrosomorpholine (NMOR), N-nitrosodi-n-butylamine (NDBA), and N-nitrosopiperidine (NPIP), and their formation potentials (FPs) in a highly urbanized basin. The results showed that total NAs and their FPs ranged from 101 to 141 ng/L and 72.6-203 ng/L in the influent, implying that NAs and their FPs in the raw sewage might be affected by the sewage type, especially for NDMA (up to 103 ng/L) influenced by industrial wastewater. NDMA FP was positively correlated with NH4+, TN, and TOC, while NDMA, NDEA, and NDEA FP were strongly associated with heavy metals, especially Hg, implying factories using Hg as potential sources. The biological treatment effectively removed NAs in STPs, but NMOR showed the weakest biological removal. In addition, the removal efficiency of NDMA was related to the type of biological treatment in the following order: Modified anaerobic-anoxic-oxic-membrane-bioreactor (Modified AAO-MBR) (81.2%) > AAO (60.1%) > Oxidation ditch (53.3%) > UNITANK (46.5%) > Modified AAO (25.8%). After treatment, total NAs (mainly NDMA and NMOR) in the effluent still ranged from 7.09 to 31.8 ng/L. In the receiving rivers, although NMOR was mainly photodegraded, Patescibacteria discharged from STPs was the first time to be identified as a potential contributor for NMOR. NDMA was primarily degraded through photodegradation and biodegradation, NDMA FP was probably biodegraded, with Proteobacteria probably contributing to the biodegradation of NDMA and NDMA FP.
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Affiliation(s)
- Jie Liu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Bo Zhao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China.
| | - Longfei Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Wenlong Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Tingchao Zan
- Nanjing Jiangning Water Business Group, Nanjing, 210000, PR China
| | - Zhenguo Chen
- Guangdong Provincial Engineering Research Center of Intelligent Low-carbon Pollution Prevention and Digital Technology, South China Normal University, Guangzhou, 510006, PR China; SCNU (NAN'AN) Green and Low-carbon Innovation Center, Nan'an SCNU Institute of Green and Low-carbon Research, Quanzhou, 362300, PR China
| | - Yi Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China.
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Xia J, Li Y, Jiang X, Chen D, Shen J. Enhanced 4-bromophenol anaerobic biodegradation in electricity-stimulated anaerobic system: The key role of humic acid in reshaping microbial eco-interrelations and functions. JOURNAL OF HAZARDOUS MATERIALS 2023; 453:131426. [PMID: 37084513 DOI: 10.1016/j.jhazmat.2023.131426] [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: 09/14/2022] [Revised: 04/05/2023] [Accepted: 04/14/2023] [Indexed: 05/03/2023]
Abstract
Electricity-stimulated anaerobic system (ESAS) has shown great potential for halogenated organic pollutants removal. Exogenous redox mediators can improve electron transfer efficiency to enhance pollutants removal in ESAS. In this study, humic acid (HA), a low-cost electron mediator, was added into ESAS to enhance the simultaneous reductive debromination and mineralization of 4-bromophenol (4-BP). Results showed that the highest 4-BP removal efficiency at 48 h was 95.43 % with HA dosage of 30 mg/L at - 700 mV, which was 34.67 % higher than that without HA. The addition of HA decreased the requirement for electron donors and enriched Petrimonas and Rhodococcus for humus respiratory. HA addition regulated microbial interactions, and enhanced species cooperation between Petrimonas and dehalogenation species (Thauera and Desulfovibrio), phenol degradation-related species (Rhodococcus) as well as fermentative species (Desulfobulbus). Functional genes related to 4-BP degradation (dhaA/hemE/xylC/chnB/dmpN) and electron transfer (etfB/nuoA/qor/ccoN/coxA) were increased in abundance by HA addition. The enhanced microbial functions, as well as species cooperation and facilitation, all contributed to the improved 4-BP biodegradation in HA-added ESAS. This study provided a deep insight into microbial mechanism driven by HA and offered a promising strategy for improving halogenated organic pollutants removal from wastewater.
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Affiliation(s)
- Jiaohui Xia
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yan Li
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Xinbai Jiang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Dan Chen
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jinyou Shen
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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Guarin TC, Pagilla KR. Microbial community in biofilters for water reuse applications: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 773:145655. [PMID: 33940748 DOI: 10.1016/j.scitotenv.2021.145655] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/18/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
The combination of ozonation (O3) and biofiltration processes has become practical and desirable in advanced water reclamation for water reuse applications. However, the role of microbial community and its characteristics (source, abundance, composition, viability, structure) on treatment performance has not received the same attention in water reclamation biofilters as in other applications, such as in drinking water biofilters. Microbial community characterization of biofilters used in water reuse applications will add evidence to better understand the potential microorganisms, consequent risks, and mechanisms that will populate drinking water sources and ultimately influence public health and the environment. This critical review provides insights into O3-biofiltration as a treatment barrier with a focus on development, structure, and composition of the microbial community characteristics involved in the process. The effect of microorganism seeding by the influent before and after the biofilter and ozone oxidation effects are explored to capture the microbial ecology interactions and environmental factors affecting the media ecosystem. The findings of reviewed studies concurred in identifying Proteobacteria as the most dominant phylum. However, Proteobacteria and other phyla relative abundance differ substantially depending upon environmental factors (e.g., pH, temperature, nutrients availability, among others) gradients. In general, we found significant gaps to relate and explain the biodegradation performance and metabolic processes within the biofilter, and hence deserve future attention. We highlighted and identified key challenges and future research ideas to assure O3-biofiltration reliability as a promising barrier in advanced water treatment applications.
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Affiliation(s)
- Tatiana C Guarin
- Department of Civil and Environmental Engineering, University of Nevada, Reno, Reno, NV 89557-0258, USA
| | - Krishna R Pagilla
- Department of Civil and Environmental Engineering, University of Nevada, Reno, Reno, NV 89557-0258, USA.
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Khandare SD, Chaudhary DR, Jha B. Marine bacterial biodegradation of low-density polyethylene (LDPE) plastic. Biodegradation 2021; 32:127-143. [PMID: 33544248 DOI: 10.1007/s10532-021-09927-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 01/13/2021] [Indexed: 11/26/2022]
Abstract
Polyethylene has considered as non-degradable for decades, and their degradation through marine bacteria has rarely studied. However, LDPE found a significant source of pollution in the marine environment. In the present study, four bacterial strains capable of biodegradation of LDPE were isolated from the marine environment. These bacterial isolates H-237, H-255, H-256 and H-265 were revealed close similarity with Cobetia sp., Halomonas sp., Exigobacterium sp. and Alcanivorax sp., respectively based on 16S rRNA gene sequencing method. These bacterial isolates were individually incubated for 90 days supplied with LDPE films as a carbon source using the Bushnell-Haas medium. During the biodegradation assay, bacterial isolates were formed the viable biofilm on the LDPE surface, which decreased the thermal stability of the films. At the end of the incubation study, a maximum weight loss of 1.72% of LDPE film was observed by the bacterial isolate H-255. The bacterial attachment on the film changed the physical structure (surface erosion, roughness and degradation) which were confirmed by field emission scanning electron microscopy and atomic force microscopy. The changes in the chemical structure of the LDPE film were analyzed by Attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR). This ATR-FTIR showed the shifting of peaks of C-H stretch and C=C bond stretching and the new peaks formation of C-O and -C=C- bonds in comparison to control LDPE film. Further, biodegradation of LDPE film was also confirmed by remineralization of carbon and enzymatic activities. This study revealed that the active biodegradation of LDPE film by marine bacteria and these bacteria could reduce plastic pollution in the marine environment.
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Affiliation(s)
- Shrikant D Khandare
- Academy of Scientific and Innovative Research (AcSIR), CSIR, New Delhi, India
- Division of Biotechnology and Phycology, CSIR - Central Salt and Marine Chemicals Research Institute, G. B., Bhavnagar, Gujarat, 364 002, India
| | - Doongar R Chaudhary
- Academy of Scientific and Innovative Research (AcSIR), CSIR, New Delhi, India.
- Division of Biotechnology and Phycology, CSIR - Central Salt and Marine Chemicals Research Institute, G. B., Bhavnagar, Gujarat, 364 002, India.
| | - Bhavanath Jha
- Division of Biotechnology and Phycology, CSIR - Central Salt and Marine Chemicals Research Institute, G. B., Bhavnagar, Gujarat, 364 002, India
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Liu Y, Fu L, Hao S, Shen X. Residue valorization: Preparation of recyclable organic amine adsorbent using laterite residue. JOURNAL OF SAUDI CHEMICAL SOCIETY 2021. [DOI: 10.1016/j.jscs.2020.101177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Preparation of magnetic composite adsorbents from laterite nickel ore for organic amine removal. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2020.102933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Zhang Y, Zhao YG, Muhammad N, Ye ML, Zhu Y. Ultrasound-assisted synthesis of clover-shaped nano-titania functionalized covalent organic frameworks for the dispersive solid phase extraction of N-nitrosamines in drinking water. J Chromatogr A 2020; 1618:460891. [PMID: 31980265 DOI: 10.1016/j.chroma.2020.460891] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 01/14/2020] [Indexed: 10/25/2022]
Abstract
In this study, three batches of nano-titania functionalized covalent organic frameworks were acquired depending on different solvothermal reaction stages (24 h, 48 h and 72 h), which were named as single roll-up shaped nano-titania functionalized COFs (SSTF-COFs), double roll-up shaped nano-titania functionalized COFs (DSTF-COFs) and clover-shaped nano-titania functionalized covalent organic framework (CSTF-COFs), respectively. After comparing their extraction performances, the more efficient and stable CSTF-COFs were selected as sorbent for the dispersive solid phase extraction (dSPE) of eight target N-nitrosamines in drinking water, followed by the determination with liquid chromatography-tandem quadrupole mass spectrometry (LC-MS/MS). Owing to the introduction of hydroxy groups, CSTF-COFs showed high extraction efficiency for N-nitrosamines with a wide range of polarities through hydrogen bonding interaction, hydrophobic interaction and hydrophilic interaction. Under optimum conditions, the developed method provided relatively low limits of detection (0.13-2.45 ng/L) and satisfactory recoveries (88.6-105.5%), with relative standard deviations (RSDs) less than 8.3%. Therefore, with the assistance of CSTF-COFs, trace levels of N-nitrosamines were quantitatively and sensitively determined in 31 out of 460 bottled drinking water samples in a sensitive and convenient way.
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Affiliation(s)
- Yun Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yong-Gang Zhao
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Nadeem Muhammad
- Department of Environmental Engineering, Wuchang University of Technology, Wuhan 430223, China
| | - Ming-Li Ye
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China.
| | - Yan Zhu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
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