Highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgels
Perfluorooctanoic 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...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/162198 |
| _version_ | 1811693686682025984 |
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| author | Bao, Yueping Gupta, Nupur Chuah, Chong Yang Liang, Yen Nan Hu, Chun Po Hu, Xiao |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Bao, Yueping Gupta, Nupur Chuah, Chong Yang Liang, Yen Nan Hu, Chun Po Hu, Xiao |
| author_sort | Bao, Yueping |
| collection | NTU |
| description | Perfluorooctanoic 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. |
| first_indexed | 2024-10-01T06:55:38Z |
| format | Journal Article |
| id | ntu-10356/162198 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:55:38Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1621982022-10-10T01:42:05Z Highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgels Bao, Yueping Gupta, Nupur Chuah, Chong Yang Liang, Yen Nan Hu, Chun Po Hu, Xiao School of Materials Science and Engineering Interdisciplinary Graduate School (IGS) Nanyang Environment and Water Research Institute Environmental Chemistry & Materials Centre Singapore Membrane Technology Centre Engineering::Environmental engineering Stimulative Microgels Membrane Adsorption Perfluorooctanoic 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. 2022-10-10T01:42:05Z 2022-10-10T01:42:05Z 2022 Journal Article Bao, 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-. https://dx.doi.org/10.1016/j.seppur.2022.120479 1383-5866 https://hdl.handle.net/10356/162198 10.1016/j.seppur.2022.120479 2-s2.0-85123761320 287 120479 en Separation and Purification Technology © 2022 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Stimulative Microgels Membrane Adsorption Bao, Yueping Gupta, Nupur Chuah, Chong Yang Liang, Yen Nan Hu, Chun Po Hu, Xiao Highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgels |
| title | Highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgels |
| title_full | Highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgels |
| title_fullStr | Highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgels |
| title_full_unstemmed | Highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgels |
| title_short | Highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on pH-stimulated poly (dimethyl amino) ethyl methacrylate microgels |
| title_sort | highly selective recovery of perfluorooctanoic acid from semiconductor wastewater via adsorption on ph stimulated poly dimethyl amino ethyl methacrylate microgels |
| topic | Engineering::Environmental engineering Stimulative Microgels Membrane Adsorption |
| url | https://hdl.handle.net/10356/162198 |
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