Interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein

Perfluorooctanoic acid (PFOA) is nonbiodegradable, and adsorption is the main pathway for its removal in wastewater treatment plants (WWTPs). This study compared the capability of three types of sludge on adsorbing PFOA and investigated the role of extracellular polymeric substances (EPS) in the ads...

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Main Authors: Yan, Wangwang, Qian, Tingting, Zhang, Liang, Wang, Li, Zhou, Yan
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/155488
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1554882022-03-02T07:24:26Z Interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein Yan, Wangwang Qian, Tingting Zhang, Liang Wang, Li Zhou, Yan School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Engineering::Civil engineering Wastewater Treatment Plants Adsorption Mechanism Perfluorooctanoic acid (PFOA) is nonbiodegradable, and adsorption is the main pathway for its removal in wastewater treatment plants (WWTPs). This study compared the capability of three types of sludge on adsorbing PFOA and investigated the role of extracellular polymeric substances (EPS) in the adsorption process. Results show that enhanced biological phosphorus removal (EBPR) sludge had the highest adsorption capacity for PFOA. Studies on the interaction between EPS and PFOA reveal that proteins play a crucial role in binding PFOA to EPS/sludge. Specifically, the aromatic and amide groups on the structure of protein can attract the C-F chains and carboxylic head of PFOA via hydrophobic interaction and electrostatic attraction, respectively. EPS of EBPR sludge has the highest amount of protein and binding sites, thus exhibits the highest adsorption capability for PFOA. This study reveals the interaction mechanism between PFOA and sludge EPS and provides new insight into the function of EPS in perfluoroalkyl substances removal in WWTPs. 2022-03-02T07:24:26Z 2022-03-02T07:24:26Z 2021 Journal Article Yan, W., Qian, T., Zhang, L., Wang, L. & Zhou, Y. (2021). Interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein. Journal of Hazardous Materials, 401, 123381-. https://dx.doi.org/10.1016/j.jhazmat.2020.123381 0304-3894 https://hdl.handle.net/10356/155488 10.1016/j.jhazmat.2020.123381 32652414 2-s2.0-85087385557 401 123381 en Journal of Hazardous Materials © 2020 Elsevier B.V. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering
Wastewater Treatment Plants
Adsorption Mechanism
spellingShingle Engineering::Civil engineering
Wastewater Treatment Plants
Adsorption Mechanism
Yan, Wangwang
Qian, Tingting
Zhang, Liang
Wang, Li
Zhou, Yan
Interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein
description Perfluorooctanoic acid (PFOA) is nonbiodegradable, and adsorption is the main pathway for its removal in wastewater treatment plants (WWTPs). This study compared the capability of three types of sludge on adsorbing PFOA and investigated the role of extracellular polymeric substances (EPS) in the adsorption process. Results show that enhanced biological phosphorus removal (EBPR) sludge had the highest adsorption capacity for PFOA. Studies on the interaction between EPS and PFOA reveal that proteins play a crucial role in binding PFOA to EPS/sludge. Specifically, the aromatic and amide groups on the structure of protein can attract the C-F chains and carboxylic head of PFOA via hydrophobic interaction and electrostatic attraction, respectively. EPS of EBPR sludge has the highest amount of protein and binding sites, thus exhibits the highest adsorption capability for PFOA. This study reveals the interaction mechanism between PFOA and sludge EPS and provides new insight into the function of EPS in perfluoroalkyl substances removal in WWTPs.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Yan, Wangwang
Qian, Tingting
Zhang, Liang
Wang, Li
Zhou, Yan
format Article
author Yan, Wangwang
Qian, Tingting
Zhang, Liang
Wang, Li
Zhou, Yan
author_sort Yan, Wangwang
title Interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein
title_short Interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein
title_full Interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein
title_fullStr Interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein
title_full_unstemmed Interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein
title_sort interaction of perfluorooctanoic acid with extracellular polymeric substances - role of protein
publishDate 2022
url https://hdl.handle.net/10356/155488
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