“阳离子交换膜 - 硝酸铵溶液”体系中的电传质 - Suppr

Kozaderova Olga, Kozaderov Oleg, Niftaliev Sabukhi

Faculty of Ecology and Chemical Technology, Voronezh State University of Engineering Technologies, 394036 Voronezh, Russia.

Faculty of Chemistry, Voronezh State University, 394018 Voronezh, Russia.

Membranes (Basel). 2022 Nov 15;12(11):1144. doi: 10.3390/membranes12111144.

The paper describes an experimental study and the mathematical simulation of the electromembrane transfer of cations of weak electrolytes (namely, ammonium ions), hindered by hydrolysis reactions taking place in the surface layers of the cation exchange membrane. Using the finite element method, we found a solution to the corresponding diffusion-kinetic electrodialysis problem in potentiostatic mode. Based on the experimental data and the results of theoretical simulation, we analyzed the effect of hydrolysis on the concentration polarization of the electromembrane system and the transport characteristics of ions, and suggested a mechanism of transfer of the components of the ammonium nitrate solution through the cation exchange membrane.

本文描述了一项实验研究以及对弱电解质阳离子（即铵离子）电膜转移的数学模拟，该转移过程受到阳离子交换膜表层发生的水解反应的阻碍。使用有限元方法，我们找到了恒电位模式下相应扩散动力学电渗析问题的解决方案。基于实验数据和理论模拟结果，我们分析了水解对电膜系统浓度极化和离子传输特性的影响，并提出了硝酸铵溶液成分通过阳离子交换膜的转移机制。