Comparison of transport properties of monovalent anions through anion-exchange membranes

被引：173

作者：

Elattar, A ^{[1
]}

Elmidaoui, A ^{[1
]}

Pismenskaia, N ^{[1
]}

Gavach, C ^{[1
]}

Pourcelly, G ^{[1
]}

机构：

[1] CNRS, UMR 5635, Lab Mat & Proc Membranaires, F-34293 Montpellier 5, France

来源：

JOURNAL OF MEMBRANE SCIENCE | 1998年 / 143卷 / 1-2期

关键词：

ion-exchange membranes; electroconductivity; transport number; convection;

D O I：

10.1016/S0376-7388(98)00013-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Transport properties of chloride, fluoride and nitrate ions through AFN, AMX, ACS, ACM anion-exchange membranes (from Tokuyama Soda) and MA-40 membrane (from the Institute of Plastic Materials, Moscow) have been investigated by studying electroconductivity, transport numbers and current-voltage characteristics. On the basis of the micro-heterogeneous model proposed by Nikonenko and Zabolotsky describing the microstructure of the membrane material, the volume fractions of the different phases and the electroconductivity of the joint-gel phase have been determined. Good correlations have been founded between the electroconductivity of the anion-exchange membranes (AEMs) and their structural properties. Recommendations are provided to determine which kind of membrane has to be selected for a given application. For all the membranes, increase of the counter-ion mass transfer is observed above the limiting current. (C) 1998 Elsevier Science B.V.

引用

页码：249 / 261

页数：13

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