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dc.contributor.authorBao, Yuepingen_US
dc.contributor.authorGupta, Nupuren_US
dc.contributor.authorChuah, Chong Yangen_US
dc.contributor.authorLiang, Yen Nanen_US
dc.contributor.authorHu, Chun Poen_US
dc.contributor.authorHu, Xiaoen_US
dc.identifier.citationBao, Y., Gupta, N., Chuah, C. Y., Liang, Y. N., Hu, C. P. & Hu, X. (2022). Highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgels. Separation and Purification Technology, 287, 120479-.
dc.description.abstractPerfluorooctanoic acid (PFOA) is a high-value chemical which has been widely used in the semiconductor industry. There is currently a lot of work focusing on the removal of low concentration of PFOA due to its potential toxicity, whereas the recovery of high concentration of PFOA from semiconductor wastewater via adsorption could be more valuable. This work reported a novel pH-stimulated poly (dimethyl amino) ethyl methacrylate (PDMAEMA) microgel for selective PFOA recovery. The results showed that the calculated maximum adsorption capacity for PFOA on PDMAEMA microgel is as high as 2632 mg g−1 in the presence of 5% (v/v) isopropyl alcohol (IPA). Electrostatic interaction was considered as the main adsorption mechanism combined with hydrophobic interactions. The strong interactions made the adsorption highly selective; therefore, the components in the water matrix, including acids, metal ions, and organic solvents, would not affect the adsorption performance. Meanwhile, due to the pH responsiveness of PDMAEMA microgels, PFOA could be released easily when the solution pH was adjusted to higher values. Finally, the application mode was investigated by incorporating PDMAEMA microgels into a dense membrane, in which the separation of the microgels in a water system could be effectively achieved.en_US
dc.relation.ispartofSeparation and Purification Technologyen_US
dc.rights© 2022 Elsevier B.V. All rights reserved.en_US
dc.subjectEngineering::Environmental engineeringen_US
dc.titleHighly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgelsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchEnvironmental Chemistry & Materials Centreen_US
dc.contributor.researchSingapore Membrane Technology Centreen_US
dc.subject.keywordsStimulative Microgelsen_US
dc.subject.keywordsMembrane Adsorptionen_US
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