| Preparation and separation performance of acid-resistant polyether nanofiltration membranes |
| Authors: HU Xinmiao1, LI Mowen1, ZHANG Wenhai2, MENG Hong2, GUO Hongxia1 |
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Units: 1. State Key Laboratory of Materials Low-Carbon Recycling, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China; 2. Key Laboratory of Energy Materials Chemistry, Ministry of Education, College of Chemistry, Xinjiang University, Urumqi 830046, China |
| KeyWords: interfacial polymerization; polyether; nanofiltration membrane; acid-resistant membrane; chlorine resistance |
| ClassificationCode:TQ028.4 |
| year,volume(issue):pagination: 2026, 46(4):1-11 |
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Abstract: |
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To address the structural and performance degradation of nanofiltration (NF) membranes under strongly acidic and chlorine-containing conditions during dye wastewater treatment, this study proposed a separation-layer construction strategy that simultaneously balanced chemical stability and water permeability. By incorporating rigid aromatic polyphenol units and triazine ring structures into the polymer network of the separation-layer, a novel aromatic polyether composite NF membrane was fabricated on a PSf substrate via interfacial polymerization, using phloroglucinol and cyanuric chloride as reaction monomers. Under optimized preparation conditions, the resulting membrane exhibited a water permeability of 218.23 L/(m2·h·MPa) and a rejection of 96.84% toward eriochrome black R (EBR). Owing to the polyether network synergistically constructed by rigid aromatic backbones and triazine rings, the membrane maintained stable separation performance after immersion for over 60 days in 15% (mass fraction) hydrochloric acid, 15% (mass fraction) sulfuric acid, and 1 g/L sodium hypochlorite solutions. These results demonstrate the promising application potential of the developed polyether NF membrane for the treatment of acidic and chlorine-containing dye wastewater. |
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Funds: |
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国家自然科学基金面上项目(22178007, 22468046) |
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AuthorIntro: |
| 胡欣淼(2000-),女,山西临汾人,硕士研究生,研究方向为高性能分离膜及其应用.*通讯作者,张文海,E-mail:whzhang0305@163.com;郭红霞,E-mail:hxguo@bjut.edu.cn |
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Reference: |
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[1]Ezugbe E O, Rathilal S. Membrane technologies in wastewater treatment: A review[J]. Membranes, 2020, 10(5): 89. |
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