A Study on Electrochemical Regeneration of Waste Iron-chloride Etchant and Copper Recovery 


Vol. 18,  No. 2, pp. 183-190, Jun.  2012


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  Abstract

Electrochemical regeneration of the iron chloride waste solution from PCB etching reduces environmental contamination and produces copper as by-product, so the economic feasibility is high. But iron chloride waste solution contains iron and copper and the reactions occurring in the electrolytic cell are complicated. In this work, the oxidation of iron chloride and copper deposition were examined through batch electrolysis and the optimum conditions of the process parameters were found. The oxidation of ferrous chloride was achieved easily to the desired level. The copper deposition efficiency was high in the reaction using the carbon cathode when the copper density was 12 g/L with the electric current density of 350 mA /cm2, and the ratio of the Fe2+ ion was high. In addition, the possibility of the scale-up was confirmed in continuous operation of bench reactor using the optimum conditions obtained.

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  Cite this article

[IEEE Style]

K. SE, L. SL, K. SC, K. IC, S. R, P. YH, "A Study on Electrochemical Regeneration of Waste Iron-chloride Etchant and Copper Recovery," Clean Technology, vol. 18, no. 2, pp. 183-190, 2012. DOI: .

[ACM Style]

Kim SE, Lee SL, Kang SC, Kim IC, Sheikh R, and Park YH. 2012. A Study on Electrochemical Regeneration of Waste Iron-chloride Etchant and Copper Recovery. Clean Technology, 18, 2, (2012), 183-190. DOI: .

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한국연구재단 등재학술지