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Fate of artificial sweeteners through wastewater treatment plants and water treatment processes

Five full-scale wastewater treatment plants (WWTPs) in China using typical biodegradation processes (SBR, oxidation ditch, A(2)/O) were selected to assess the removal of four popular artificial sweeteners (ASs). All four ASs (acesulfame (ACE), sucralose (SUC), cyclamate (CYC) and saccharin (SAC)) we...

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Autores principales: Li, Shaoli, Ren, Yuhang, Fu, Yingying, Gao, Xingsheng, Jiang, Cong, Wu, Gang, Ren, Hongqiang, Geng, Jinju
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5749728/
https://www.ncbi.nlm.nih.gov/pubmed/29293534
http://dx.doi.org/10.1371/journal.pone.0189867
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author Li, Shaoli
Ren, Yuhang
Fu, Yingying
Gao, Xingsheng
Jiang, Cong
Wu, Gang
Ren, Hongqiang
Geng, Jinju
author_facet Li, Shaoli
Ren, Yuhang
Fu, Yingying
Gao, Xingsheng
Jiang, Cong
Wu, Gang
Ren, Hongqiang
Geng, Jinju
author_sort Li, Shaoli
collection PubMed
description Five full-scale wastewater treatment plants (WWTPs) in China using typical biodegradation processes (SBR, oxidation ditch, A(2)/O) were selected to assess the removal of four popular artificial sweeteners (ASs). All four ASs (acesulfame (ACE), sucralose (SUC), cyclamate (CYC) and saccharin (SAC)) were detected, ranging from 0.43 to 27.34μg/L in the influent. Higher concentrations of ASs were measured in winter. ACE could be partly removed by 7.11–50.76% through biodegradation and especially through the denitrifying process. The A(2)/O process was the most efficient at biodegrading ASs. Adsorption (by granular activated carbon (GAC) and magnetic resin) and ultraviolet radiation-based advanced oxidation processes (UV/AOPs) were evaluated to remove ASs in laboratory-scale tests. The amounts of resin adsorbed were 3.33–18.51 times more than those of GAC except for SUC. The adsorption ability of resin decreased in the order of SAC > ACE > CYC > SUC in accordance with the pKa. Degradation of ASs followed pseudo-first-order kinetics in UV/H(2)O(2) and UV/PDS. When applied to the secondary effluent, ASs could be degraded from 30.87 to 99.93% using UV/PDS in 30 minutes and UV/PDS was more efficient and economic.
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spelling pubmed-57497282018-01-26 Fate of artificial sweeteners through wastewater treatment plants and water treatment processes Li, Shaoli Ren, Yuhang Fu, Yingying Gao, Xingsheng Jiang, Cong Wu, Gang Ren, Hongqiang Geng, Jinju PLoS One Research Article Five full-scale wastewater treatment plants (WWTPs) in China using typical biodegradation processes (SBR, oxidation ditch, A(2)/O) were selected to assess the removal of four popular artificial sweeteners (ASs). All four ASs (acesulfame (ACE), sucralose (SUC), cyclamate (CYC) and saccharin (SAC)) were detected, ranging from 0.43 to 27.34μg/L in the influent. Higher concentrations of ASs were measured in winter. ACE could be partly removed by 7.11–50.76% through biodegradation and especially through the denitrifying process. The A(2)/O process was the most efficient at biodegrading ASs. Adsorption (by granular activated carbon (GAC) and magnetic resin) and ultraviolet radiation-based advanced oxidation processes (UV/AOPs) were evaluated to remove ASs in laboratory-scale tests. The amounts of resin adsorbed were 3.33–18.51 times more than those of GAC except for SUC. The adsorption ability of resin decreased in the order of SAC > ACE > CYC > SUC in accordance with the pKa. Degradation of ASs followed pseudo-first-order kinetics in UV/H(2)O(2) and UV/PDS. When applied to the secondary effluent, ASs could be degraded from 30.87 to 99.93% using UV/PDS in 30 minutes and UV/PDS was more efficient and economic. Public Library of Science 2018-01-02 /pmc/articles/PMC5749728/ /pubmed/29293534 http://dx.doi.org/10.1371/journal.pone.0189867 Text en © 2018 Li et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Li, Shaoli
Ren, Yuhang
Fu, Yingying
Gao, Xingsheng
Jiang, Cong
Wu, Gang
Ren, Hongqiang
Geng, Jinju
Fate of artificial sweeteners through wastewater treatment plants and water treatment processes
title Fate of artificial sweeteners through wastewater treatment plants and water treatment processes
title_full Fate of artificial sweeteners through wastewater treatment plants and water treatment processes
title_fullStr Fate of artificial sweeteners through wastewater treatment plants and water treatment processes
title_full_unstemmed Fate of artificial sweeteners through wastewater treatment plants and water treatment processes
title_short Fate of artificial sweeteners through wastewater treatment plants and water treatment processes
title_sort fate of artificial sweeteners through wastewater treatment plants and water treatment processes
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5749728/
https://www.ncbi.nlm.nih.gov/pubmed/29293534
http://dx.doi.org/10.1371/journal.pone.0189867
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