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Sorption Behavior of Bisphenol A and Triclosan by Graphene: Comparison with Activated Carbon
[Image: see text] The sorption behavior of bisphenol A (BPA) and triclosan (TCS) on graphene was investigated and compared with that on activated carbon. The kinetic studies showed that BPA sorption on graphene or activated carbon reached equilibrium within 240 min, whereas TCS sorption on these two...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644336/ https://www.ncbi.nlm.nih.gov/pubmed/31457806 http://dx.doi.org/10.1021/acsomega.7b00616 |
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author | Wang, Fei Lu, Xingwen Peng, Wenchao Deng, Yu Zhang, Tong Hu, Yibo Li, Xiao-yan |
author_facet | Wang, Fei Lu, Xingwen Peng, Wenchao Deng, Yu Zhang, Tong Hu, Yibo Li, Xiao-yan |
author_sort | Wang, Fei |
collection | PubMed |
description | [Image: see text] The sorption behavior of bisphenol A (BPA) and triclosan (TCS) on graphene was investigated and compared with that on activated carbon. The kinetic studies showed that BPA sorption on graphene or activated carbon reached equilibrium within 240 min, whereas TCS sorption on these two materials achieved equilibrium in 60 and 120 min. The maximum sorption capacity (q(m)) of BPA on graphene or activated carbon reached approximately 2.0 × 10(3) μg/g, which indicated that graphene was not superior to traditional activated carbon for BPA removal. By contrast, the strong partitioning ability of TCS on graphene suggested the potential use of graphene materials to remove TCS from wastewater. Although the pH change from 4.0 to 7.0 did not greatly affect BPA or TCS sorption, the sorption decreased dramatically when the pH was increased from 7.0 to 9.0. This phenomenon should be attributed to the establishment of electrostatic repulsion between anionic BPA (or TCS) molecules and the graphene (or activated carbon) surface under higher pH conditions. The increase of ion (NaCl and CaCl(2)) concentrations may lead to substantial increase of BPA sorption on graphene or activated carbon due to the salting-out effect. By contrast, ion concentrations had no significant effect on TCS sorption because of the dominant hydrophobic interaction. |
format | Online Article Text |
id | pubmed-6644336 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-66443362019-08-27 Sorption Behavior of Bisphenol A and Triclosan by Graphene: Comparison with Activated Carbon Wang, Fei Lu, Xingwen Peng, Wenchao Deng, Yu Zhang, Tong Hu, Yibo Li, Xiao-yan ACS Omega [Image: see text] The sorption behavior of bisphenol A (BPA) and triclosan (TCS) on graphene was investigated and compared with that on activated carbon. The kinetic studies showed that BPA sorption on graphene or activated carbon reached equilibrium within 240 min, whereas TCS sorption on these two materials achieved equilibrium in 60 and 120 min. The maximum sorption capacity (q(m)) of BPA on graphene or activated carbon reached approximately 2.0 × 10(3) μg/g, which indicated that graphene was not superior to traditional activated carbon for BPA removal. By contrast, the strong partitioning ability of TCS on graphene suggested the potential use of graphene materials to remove TCS from wastewater. Although the pH change from 4.0 to 7.0 did not greatly affect BPA or TCS sorption, the sorption decreased dramatically when the pH was increased from 7.0 to 9.0. This phenomenon should be attributed to the establishment of electrostatic repulsion between anionic BPA (or TCS) molecules and the graphene (or activated carbon) surface under higher pH conditions. The increase of ion (NaCl and CaCl(2)) concentrations may lead to substantial increase of BPA sorption on graphene or activated carbon due to the salting-out effect. By contrast, ion concentrations had no significant effect on TCS sorption because of the dominant hydrophobic interaction. American Chemical Society 2017-09-05 /pmc/articles/PMC6644336/ /pubmed/31457806 http://dx.doi.org/10.1021/acsomega.7b00616 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Wang, Fei Lu, Xingwen Peng, Wenchao Deng, Yu Zhang, Tong Hu, Yibo Li, Xiao-yan Sorption Behavior of Bisphenol A and Triclosan by Graphene: Comparison with Activated Carbon |
title | Sorption Behavior of Bisphenol A and Triclosan by
Graphene: Comparison with Activated Carbon |
title_full | Sorption Behavior of Bisphenol A and Triclosan by
Graphene: Comparison with Activated Carbon |
title_fullStr | Sorption Behavior of Bisphenol A and Triclosan by
Graphene: Comparison with Activated Carbon |
title_full_unstemmed | Sorption Behavior of Bisphenol A and Triclosan by
Graphene: Comparison with Activated Carbon |
title_short | Sorption Behavior of Bisphenol A and Triclosan by
Graphene: Comparison with Activated Carbon |
title_sort | sorption behavior of bisphenol a and triclosan by
graphene: comparison with activated carbon |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644336/ https://www.ncbi.nlm.nih.gov/pubmed/31457806 http://dx.doi.org/10.1021/acsomega.7b00616 |
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