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Language: English

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

Publication history: Received March 31, 2003
Accepted January 5, 2004

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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Combined Performance of Electrocoagulation and Magnetic Separation Processes for Treatment of Dye Wastewater

Su-Hee Shin Yong-Ha Kim^† Su-Kyong Jung Kuen-Hack Suh Shin-Gyung Kang¹ Sun-Kwang Jeong² Hang-Goo Kim²

Department of Chemical Engineering, Pukyong National University, Pusan 608-739, Korea ¹Environmental Conservation Research Team, Research Institute of Industrial Science and Technology, Kwangyang 545-090, Korea ²Fluidized-bed Reduction Team, FINEX R&D Project Dept., POSCO, Pohang 790-330, Korea

Korean Journal of Chemical Engineering, July 2004, 21(4), 806-810(5), 10.1007/BF02705524

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Abstract

In this study, a combined system of electrocoagulation (EC) and magnetic separation (MS) has been applied to the treatment of dye wastewater, and its performance has been evaluated. The flocs formed in the electrocoagulation using Fe anode are magnetized and thus they could be removed by magnetic separation. The removal of suspended solids, color and COD was improved with an increase in electric current up to about 15 A and with a decrease in liquid velocities in EC. While the remaining suspended solids in the treated water were reduced to a few ppm and the color was removed almost perfectly (Max. 96%), that of COD was relatively low and only 81%. A further powerful operation can be expected from the present system if it is combined with an additional process, such as electrolysis or oxidation, to reduce COD more efficiently.

Keywords

Electrocoagulation Magnetic Separation Wastewater Flocs Magnetization

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