期刊
MEMBRANES
卷 12, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/membranes12111144
关键词
electrodialysis; electromass transfer; ammonium nitrate; cation exchange membrane
This paper describes an experimental study and mathematical simulation of the electromembrane transfer of weak electrolyte cations (specifically ammonium ions), hindered by hydrolysis reactions in the surface layers of the cation exchange membrane. By using the finite element method, a solution was found for the diffusion-kinetic electrodialysis problem in potentiostatic mode. Based on experimental data and theoretical simulation results, the effect of hydrolysis on concentration polarization in the electromembrane system and the transport characteristics of ions were analyzed, and a mechanism for the transfer of components in the ammonium nitrate solution through the cation exchange membrane was suggested.
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.
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