LAPSE:2023.5774
Published Article
LAPSE:2023.5774
Porous Anion Exchange Membrane for Effective Acid Recovery by Diffusion Dialysis
February 23, 2023
Abstract
Diffusion dialysis (DD) employing anion exchange membranes (AEMs) presents an attractive opportunity for acid recovery from acidic wastewater. However, challenges exist to make highly acid permeable AEMs due to their low acid dialysis coefficient (Uacid). Here, a series of porous and highly acid permeable AEMs fabricated based on chloromethyl polyethersulfone (CMPES) porous membrane substrate with crosslinking and quaternization treatments is reported. Such porous AEMs show high Uacid because of the large free volume as well as the significantly reduced ion transport resistance relative to the dense AEMs. Compared with the commercial dense DF-120 AEM, our optimal porous AEM show simultaneous 466.7% higher Uacid and 75.7% higher acid/salt separation factor (Sacid/salt) when applied to acid recovery at the same condition. Further, considering the simple and efficient fabrication process as well as the low cost, our membranes show great prospects for practical acid recovery from industrial acidic wastewater.
Diffusion dialysis (DD) employing anion exchange membranes (AEMs) presents an attractive opportunity for acid recovery from acidic wastewater. However, challenges exist to make highly acid permeable AEMs due to their low acid dialysis coefficient (Uacid). Here, a series of porous and highly acid permeable AEMs fabricated based on chloromethyl polyethersulfone (CMPES) porous membrane substrate with crosslinking and quaternization treatments is reported. Such porous AEMs show high Uacid because of the large free volume as well as the significantly reduced ion transport resistance relative to the dense AEMs. Compared with the commercial dense DF-120 AEM, our optimal porous AEM show simultaneous 466.7% higher Uacid and 75.7% higher acid/salt separation factor (Sacid/salt) when applied to acid recovery at the same condition. Further, considering the simple and efficient fabrication process as well as the low cost, our membranes show great prospects for practical acid recovery from industrial acidic wastewater.
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Keywords
acid recovery, anion exchange membrane, diffusion dialysis, porous membrane
Subject
Suggested Citation
Yang J, Dai G, Wang J, Pan S, Lu G, Shi X, Tang D, Chen J, Lin X. Porous Anion Exchange Membrane for Effective Acid Recovery by Diffusion Dialysis. (2023). LAPSE:2023.5774
Author Affiliations
Yang J: Fujian Provincial Key Laboratory of Coastal Basin Environment, Fujian Polytechnic Normal University, Fuzhou 350300, China [ORCID]
Dai G: Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
Wang J: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Pan S: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Lu G: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Shi X: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Tang D: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Chen J: Fujian Provincial Key Laboratory of Coastal Basin Environment, Fujian Polytechnic Normal University, Fuzhou 350300, China
Lin X: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China; Fujian Science & Technology Innovation Laboratory for Chemical Engineering of China, Quanzhou 362114, China
Dai G: Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
Wang J: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Pan S: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Lu G: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Shi X: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Tang D: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
Chen J: Fujian Provincial Key Laboratory of Coastal Basin Environment, Fujian Polytechnic Normal University, Fuzhou 350300, China
Lin X: College of Chemical Engineering, Fuzhou University, Fuzhou 350108, China; Fujian Science & Technology Innovation Laboratory for Chemical Engineering of China, Quanzhou 362114, China
Journal Name
Processes
Volume
9
Issue
6
First Page
1049
Year
2021
Publication Date
2021-06-16
ISSN
2227-9717
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Original Submission
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PII: pr9061049, Publication Type: Journal Article
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LAPSE:2023.5774
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https://doi.org/10.3390/pr9061049
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Feb 23, 2023
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