Electroconvection in Systems with Heterogeneous Ion-Exchange Membranes

被引：46

作者：

Zabolotsky, V. I. ^{[1
]}

Novak, L. ^{[2
]}

Kovalenko, A. V. ^{[1
]}

Nikonenko, V. V. ^{[1
]}

Urtenov, M. H. ^{[1
]}

Lebedev, K. A. ^{[1
]}

But, A. Yu. ^{[1
]}

机构：

[1] Kuban State Univ, Krasnodar 350040, Russia

[2] Mega As, Straz Pod Ralskem, Czech Republic

来源：

PETROLEUM CHEMISTRY | 2017年 / 57卷 / 09期

基金：

俄罗斯基础研究基金会;

关键词：

ion-exchange membrane; electroconvection; surface morphology; limiting current; modeling; 2ND KIND; TRANSPORT; SURFACE;

D O I：

10.1134/S0965544117090109

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The features of electroconvection in a smooth rectangular desalting channel of an electrodialysis apparatus with heterogeneous ion-exchange membranes have been theoretically investigated. A 2D model of electroconvection for a binary electrolyte has been constructed for overlimiting current regimes in the form of the Nernst-Planck-Poisson and Navier-Stokes equations. The influence of surface morphology of the heterogeneous ion-exchange membranes on vortex structures and on mass transfer of salt ions has been studied. The current-voltage characteristic has been calculated for the heterogeneous ion-exchange membranes. It has been shown that mass transfer in the membrane channel can be enhanced by improving the surface morphology of the heterogeneous ion-exchange membranes. The strong-base homogeneous membrane AMX and the modified heterogeneous membrane AMH-M have been studied using the rotating membrane disk technique.

引用

页码：779 / 789

页数：11

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