Electrochemical chromic acid regeneration process: fitting of membrane transport properties

被引：22

作者：

Ahmed, MI ^{[1
]}

Chang, HT ^{[1
]}

Selman, JR ^{[1
]}

Holsen, TM ^{[1
]}

机构：

[1] IIT, Dept Environm Chem & Engn, Chicago, IL 60616 USA

来源：

JOURNAL OF MEMBRANE SCIENCE | 2002年 / 197卷 / 1-2期

关键词：

electrochemistry; electrodialysis; ion-exchange membranes; membrane reactors; transport properties;

D O I：

10.1016/S0376-7388(01)00596-8

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A mathematical model was developed to predict changes in contaminant concentrations with time. and to estimate contaminant fluxes due to migration, diffusion, and convection in a laboratory-scale batch electrolysis cell for the regeneration of contaminated hard-chrome plating baths. The feed and extract compartments of the batch-cell were separated by a Nafion-117 diaphragm. The mathematical model was used to estimate process parameters and physical properties of Nafion-117 membrane from experimental results. assuming quasi-stationary operation. Best-fit ionic mobilities of Cu, Fe, and Ni through the Nafion-l 17 membrane were found to be 5.4, 1.7. and 5.2 x 10(-10) cm(2)/V s, respectively. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：63 / 74

页数：12

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[2]

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