Ageing of ion-exchange membranes in oxidant solutions

被引：34

作者：

Dammak, Lasaad ^{[1
]}

Larchet, Christian ^{[1
]}

Grande, Daniel ^{[1
]}

机构：

[1] Univ Paris 12, CNRS, UMR 7182, Inst Chim & Mat Paris Est, F-94320 Thiais, France

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2009年 / 69卷 / 01期

关键词：

Ion-exchange membranes; Ageing; Swelling rate; Conductivity; Exchange capacity; DONNAN DIALYSIS; UF MEMBRANES; METAL-IONS; ELECTRODIALYSIS; ACID; TRANSPORT; CHROMIUM; SURFACES; CONTACT; MODEL;

D O I：

10.1016/j.seppur.2009.06.016

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In electrodialysis processes, membranes tend to loose some transport properties after a certain period of utilization. Two ion-exchange membranes, namely a homogeneous anion-exchange membrane (MX) and a heterogeneous cation-exchange membrane (MK-40), were used to investigate the ageing phenomenon and to highlight the characteristic parameters of these membranes which evolve most quickly with ageing. An artificial ageing was carried out under oxidizing conditions (i.e. peracetic acid, and P3 Active Oxonia (R) solutions) on both membranes. It was found that an increase in conductivity and swelling rate, implying a modification of the polymer chain structure with time, but without a significant deterioration of the functional groups since the exchange capacity remained almost constant. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：43 / 47

页数：5

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