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Degradation of Sulfonamides by UV/Electrochemical Oxidation and the Effects of Treated Effluents on the Bacterial Community in Surface Water
[Image: see text] This study evaluated the effects of ultraviolet (UV) photolysis combined with electrochemical oxidation on sulfonamides (SAs) as well as its treated effluent on the bacterial community in surface water. In terms of degradation rate, the best anode material for electrochemical oxida...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10413449/ https://www.ncbi.nlm.nih.gov/pubmed/37576615 http://dx.doi.org/10.1021/acsomega.3c02637 |
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author | Jiang, Xinwei Yuan, Julin Zheng, Zhijie Tao, Yufang Wu, Xiaogang |
author_facet | Jiang, Xinwei Yuan, Julin Zheng, Zhijie Tao, Yufang Wu, Xiaogang |
author_sort | Jiang, Xinwei |
collection | PubMed |
description | [Image: see text] This study evaluated the effects of ultraviolet (UV) photolysis combined with electrochemical oxidation on sulfonamides (SAs) as well as its treated effluent on the bacterial community in surface water. In terms of degradation rate, the best anode material for electrochemical oxidation was Ti/RuO(2)–IrO(2), which had the highest degradation kinetic constant compared to Ti/Ta(2)O(5)–IrO(2) and Ti/Pt. Experiments showed the highest degradation rate of SAs at 8.3 pH. Similarly, increasing the current leads to stronger degradation due to the promotion of free chlorine production, and its energy consumption rate decreases slightly from 73 to 67 W h/mmol. Compared with tap water, the kinetic constants decreased by 20–62% for SAs in three different surface water samples, which was related to the decrease in free chlorine. When extending the reaction time to 24 h, the concentrations of chemical oxygen demand and total organic carbon decreased by approximately 30–40%, indicating that the SAs and their products could be mineralized. The diversity analysis showed that the effluents influenced the richness and diversity of the bacterial community, particularly in the 4 h sample. Additionally, there were 86 operational taxonomic units common to all samples, excluding the 4 h sample; significant differences were derived from changes in the Actinobacteriota and Bacteroidota phyla. The toxicity of the products might explain these changes, and these products could be mineralized, as observed in the 24 h sample. Therefore, the extension of treatment time would greatly reduce the ecological harm of treated effluent and ensure that the UV/electrochemical process is a feasible treatment option. Overall, this study provides valuable insight into the optimization and feasibility of UV/electrochemical processes as a sustainable treatment option for sulfonamide-contaminated water sources, emphasizing the importance of considering ecological impacts and the need for extended treatment times that address environmental concerns and ensuring improved water quality. |
format | Online Article Text |
id | pubmed-10413449 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-104134492023-08-11 Degradation of Sulfonamides by UV/Electrochemical Oxidation and the Effects of Treated Effluents on the Bacterial Community in Surface Water Jiang, Xinwei Yuan, Julin Zheng, Zhijie Tao, Yufang Wu, Xiaogang ACS Omega [Image: see text] This study evaluated the effects of ultraviolet (UV) photolysis combined with electrochemical oxidation on sulfonamides (SAs) as well as its treated effluent on the bacterial community in surface water. In terms of degradation rate, the best anode material for electrochemical oxidation was Ti/RuO(2)–IrO(2), which had the highest degradation kinetic constant compared to Ti/Ta(2)O(5)–IrO(2) and Ti/Pt. Experiments showed the highest degradation rate of SAs at 8.3 pH. Similarly, increasing the current leads to stronger degradation due to the promotion of free chlorine production, and its energy consumption rate decreases slightly from 73 to 67 W h/mmol. Compared with tap water, the kinetic constants decreased by 20–62% for SAs in three different surface water samples, which was related to the decrease in free chlorine. When extending the reaction time to 24 h, the concentrations of chemical oxygen demand and total organic carbon decreased by approximately 30–40%, indicating that the SAs and their products could be mineralized. The diversity analysis showed that the effluents influenced the richness and diversity of the bacterial community, particularly in the 4 h sample. Additionally, there were 86 operational taxonomic units common to all samples, excluding the 4 h sample; significant differences were derived from changes in the Actinobacteriota and Bacteroidota phyla. The toxicity of the products might explain these changes, and these products could be mineralized, as observed in the 24 h sample. Therefore, the extension of treatment time would greatly reduce the ecological harm of treated effluent and ensure that the UV/electrochemical process is a feasible treatment option. Overall, this study provides valuable insight into the optimization and feasibility of UV/electrochemical processes as a sustainable treatment option for sulfonamide-contaminated water sources, emphasizing the importance of considering ecological impacts and the need for extended treatment times that address environmental concerns and ensuring improved water quality. American Chemical Society 2023-07-21 /pmc/articles/PMC10413449/ /pubmed/37576615 http://dx.doi.org/10.1021/acsomega.3c02637 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Jiang, Xinwei Yuan, Julin Zheng, Zhijie Tao, Yufang Wu, Xiaogang Degradation of Sulfonamides by UV/Electrochemical Oxidation and the Effects of Treated Effluents on the Bacterial Community in Surface Water |
title | Degradation of
Sulfonamides by UV/Electrochemical
Oxidation and the Effects of Treated Effluents on the Bacterial Community
in Surface Water |
title_full | Degradation of
Sulfonamides by UV/Electrochemical
Oxidation and the Effects of Treated Effluents on the Bacterial Community
in Surface Water |
title_fullStr | Degradation of
Sulfonamides by UV/Electrochemical
Oxidation and the Effects of Treated Effluents on the Bacterial Community
in Surface Water |
title_full_unstemmed | Degradation of
Sulfonamides by UV/Electrochemical
Oxidation and the Effects of Treated Effluents on the Bacterial Community
in Surface Water |
title_short | Degradation of
Sulfonamides by UV/Electrochemical
Oxidation and the Effects of Treated Effluents on the Bacterial Community
in Surface Water |
title_sort | degradation of
sulfonamides by uv/electrochemical
oxidation and the effects of treated effluents on the bacterial community
in surface water |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10413449/ https://www.ncbi.nlm.nih.gov/pubmed/37576615 http://dx.doi.org/10.1021/acsomega.3c02637 |
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