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dc.contributor.authorYan, Wangwangen_US
dc.contributor.authorQian, Tingtingen_US
dc.contributor.authorZhang, Liangen_US
dc.contributor.authorWang, Lien_US
dc.contributor.authorZhou, Yanen_US
dc.identifier.citationYan, 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-.
dc.description.abstractPerfluorooctanoic 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.en_US
dc.relation.ispartofJournal of Hazardous Materialsen_US
dc.rights© 2020 Elsevier B.V. All rights reserved.en_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleInteraction of perfluorooctanoic acid with extracellular polymeric substances - role of proteinen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.subject.keywordsWastewater Treatment Plantsen_US
dc.subject.keywordsAdsorption Mechanismen_US
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