Recovery of from Spent Copper Solution of Printed Circuit Board Process by Solvent Extraction Method 


Vol. 2,  No. 1, pp. 47-52, Jun.  1996


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  Abstract

The solvent extraction method was applied on a spent solution containing copper, which was produced in a printed circuit board process, to recover copper and to reuse the etching solution. Lix 64 N (α-Hydroxyoxime + β-Hydroxybenzophenone Oxime) was used as a solvent. The acidic spent copper solution was mixed with and alkaline copper solution to pH=2. The solvent including 30 volume% of Lix 64 N extracted 17.1gr/l of copper from the mixed spent copper solution. In the continuous bench scale experiment, 4 stages for extraction, 2 stages for stripping and 4 stages for washing were used. Recovered copper was recycled as copper sulfate and the raffinate was reused as copper etchant. The percentage of copper recovery and the purity of copper sulfate were higher than 99.9%, respectively.

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  Cite this article

[IEEE Style]

M. YH, "Recovery of from Spent Copper Solution of Printed Circuit Board Process by Solvent Extraction Method," Clean Technology, vol. 2, no. 1, pp. 47-52, 1996. DOI: .

[ACM Style]

Moon YH. 1996. Recovery of from Spent Copper Solution of Printed Circuit Board Process by Solvent Extraction Method. Clean Technology, 2, 1, (1996), 47-52. DOI: .

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한국연구재단 등재학술지