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Role of the Air-water Interface in Removing Perfluoroalkyl Acids from Drinking Water by Activated Carbon Treatment by Meng, Pingping; Jiang, Xiangzhe; Wang, Bin; Huang, Jun; Wang, Yujue; Yu, Gang; Cousins, Ian T.; Deng, Shubo is a Environmental Science article available to read on EtoBox.
What is Role of the Air-water Interface in Removing Perfluoroalkyl Acids from Drinking Water by Activated Carbon Treatment about?
Contamination of drinking water by per- and polyfluoroalkyl substances (PFASs) is a worldwide problem. In this study, we for the first time revealed the role of the air-water interface in enhancing the removal of long-chain perfluoroalkyl carboxylic (PFCAs; CFCOOH, n ≥ 7) and perfluoroalkane sulfonic (PFSAs; CFSOH, n ≥ 6) acids, collectively termed as perfluoroalkyl acids (PFAAs), through combined aeration and adsorption on two kinds of activated carbon (AC). Aeration was shown to enhance the removal of long-chain PFAAs through adsorption at the air-water interface and subsequent adsorption of PFAA-enriched air bubbles to the AC. The removal of selected long-chain PFAAs was increased by 50-115 % with the assistance of aeration, depending on the perfluoroalkyl chain length. Aeration is more effective in enhancing long-chain PFAA removal as air-water interface adsorption increases with PFAA chain length due to higher surface activity. After removing adsorbed air bubbles by centrifugation, up to 80 % of the long-chain PFAAs were able to desorb from the sorbent, confirming the contribution of the air-water interface to the adsorption of PFAAs on AC. Aeration during AC treatment of wate
Who reads Role of the Air-water Interface in Removing Perfluoroalkyl Acids from Drinking Water by Activated Carbon Treatment?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Meng, Pingping; Jiang, Xiangzhe; Wang, Bin; Huang, Jun; Wang, Yujue; Yu, Gang; Cousins, Ian T.; Deng, Shubo
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-3894)
- Published
- 2020
- Language
- EN
- Field
- Environmental Science (Physical Sciences)