CIESC Journal ›› 2025, Vol. 76 ›› Issue (5): 1960-1972.DOI: 10.11949/0438-1157.20241308

• Reviews and monographs • Previous Articles    

Progress of bipolar membrane electrodialysis for non-aqueous systems

Liuhuimei CHENG(), Junying YAN, Huiqing LIU, Zhipeng WANG, Baoying WANG, Tongwen XU, Yaoming WANG()   

  1. Department of Applied Chemistry, University of Science and Technology of China, Hefei 230026, Anhui, China
  • Received:2024-11-15 Revised:2025-03-21 Online:2025-06-13 Published:2025-05-25
  • Contact: Yaoming WANG

双极膜电渗析在醇水体系的应用研究进展

程刘惠美(), 闫军营, 刘慧情, 王治澎, 王报英, 徐铜文, 汪耀明()   

  1. 中国科学技术大学应用化学系,安徽 合肥 230026
  • 通讯作者: 汪耀明
  • 作者简介:程刘惠美(2001—),女,硕士研究生,clhm0212@mail.ustc.edu.cn
  • 基金资助:
    科技部重点研发计划(2021YFB3801402);国家自然科学基金项目(22122813)

Abstract:

As a high-performance composited membrane, bipolar membrane has been widely used for the conversion of salt into acid and alkali, energy storage and conversion, and acid-base flow battery. Under reverse voltage bias, water molecules in the middle layer of bipolar membrane in aqueous system can be dissociated into H+ and OH-, and cooperate with anion and cation exchange membrane to form bipolar membrane electrodialysis, which is widely used in the desalination and acidification of high-salt wastewater. In addition to the aqueous system, bipolar membrane electrodialysis can also be used in water-alcohol system, such as the production of water insoluble organic acids. Meanwhile, the bipolar membrane can also realize the dissociation of alcohols into hydrogen ions and alkoxide ions, which is applied to the production of metal-alkoxides and green synthesis of organic chemicals. However, there are fewer studies that summarize the application of bipolar membrane in alcohol water systems. This review focuses on the progress of bipolar membranes electrodialysis in alcohol water systems, comparing the mechanism and electrochemical properties of water and alcohol dissociation. Moreover, it also points out the bottlenecks of alcohol dissociation in bipolar membranes, including high dissociation resistance, serious coion leakage caused by the swelling of membrane layers, etc. Finally, it is necessary to in-depth elucidate the dissociation mechanism of the mixed system and to prepare alcohol-tolerance bipolar membranes to realize the wider application of the bipolar membrane water-alcohol mixed and the alcohol system.

Key words: bipolar membrane, alcohol system, water-alcohol mixed system, electrodialysis

摘要:

双极膜作为一种高性能复合膜,在盐制酸碱、能量存储与转化、酸碱液流电池等领域得到了广泛应用。在反向偏压下,水体系中双极膜中间层的水分子可解离成H+和OH-,与阴阳离子交换膜配合构成双极膜电渗析广泛应用于高盐废水脱盐同时酸碱化。除水体系外,双极膜电渗析也可应用于水-醇体系,生产水溶性较差的有机酸。同时,双极膜也可实现醇的解离,使其解离为氢离子和烷氧根离子,应用于金属醇盐生产、有机物绿色合成等。目前醇水体系研究较少,因此,本文聚焦于醇水体系双极膜电渗析研究进展,深度比较水、醇解离的机理和电化学性质。同时也指出双极膜应用于醇体系的瓶颈问题,包括解离电阻高、双极膜溶胀造成同离子泄漏严重等,最后分析为实现双极膜水-醇混合体系以及醇体系更广泛的应用,仍需积极探索其混合体系的解离机理,制备适合醇体系的双极膜等。

关键词: 双极膜, 醇体系, 水-醇混合体系, 电渗析

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