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The separation and removal of nutrient salts from wastewater can realize environmental remediation, and resource recycling and utilization. Electrodialysis (ED) membrane separation technology can offer an effective and low-energy consumption alternative but requires selective separation of nutrient salts with rapid anions permeation rate. We fabricated selective anion exchange membranes (PA-ATG) with the polyamide (PA) surface modification of commercial ATG anion exchange membrane by interfacial polymerization (IP) method. The dense PA thin-film layer with high hydrophilicity and electronegativity facilitates nitrate/phosphate anions selectively permeating through the PA-ATG membrane. The PA-ATG membrane exhibited a NO3− anion permeation rate of 1.1 mol m−2 h−1 and good NO3−/HxPO4(3−x)- permselectivity of 2.02, which is ∼2.0 times higher than that of the pristine ATG membrane. Owing to the rigid aromatic crosslinking structure, and electrostatic and hydrogen-bonding multiple interfacial interaction, the as-prepared membrane PA-ATG showed good stable and efficient separation performance during ED process for the nutrient wastewater treatment. © 2024 Elsevier B.V.
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Journal of Membrane Science
ISSN: 0376-7388
Year: 2025
Volume: 717
9 . 5 0 0
JCR@2022
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 8
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