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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 11, 2001
Accepted August 13, 2001

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Removal of Zinc Ions in Wastewater by Electrodialysis

Keun Ho Choi^† Tae Young Jeoung

Department of Chemical Engineering, Hanbat National University, San 16-1,Dukmyung-dong, Yuseong-gu, Daejeon 305-719, Korea

Korean Journal of Chemical Engineering, January 2002, 19(1), 107-113(7), 10.1007/BF02706882

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Abstract

To obtain useful data for treatment of the wastewater discharged from zinc electroplating processes, we investigated the effects of operating parameters, such as the initial concentration of dilute solution, the flow velocity and the applied voltage, on removal rate of Zn2+ in the model solutions using an electrodialysis system. Zinc ions in the solutions were effectively removed by the electrodialyzer with CMX cation exchange membranes and AMX anion exchange membranes. The initial concentration of dilute solution, the flow velocity and the applied voltage strongly affected the performance of the electrodialysis system. As the initial concentration of dilute solution, the flow velocity and the applied voltage were increased, the removal ratio was increased. The energy consumption was increased as the initial concentration of dilute solution and the applied voltage were increased, whereas the effect of the flow velocity on the energy consumption was negligible.

Keywords

Electrodialysis Removal Ratio Zinc Ion Wastewater Treatment

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