A Study on the Electrolytic Process for Palladium Separation from Recovered Crude Metal of Electronic Waste

Sung Cheol Park; Chul Woong Han; Yong Hwan Kim; Yeon Jae Jung; Man Seung Lee; Seong Ho Son

doi:10.7844/kirr.2021.30.6.76

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2021 Vol.30, Issue 6 Preview Page

Research Paper

A Study on the Electrolytic Process for Palladium Separation from Recovered Crude Metal of Electronic Waste 전자폐기물에서 회수된 조금속으로부터 팔라듐 분리를 위한 전해공정에 관한 연구

31 December 2021. pp. 76-82

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Abstract

The separation of palladium from crude metal, which is obtained from electronic waste using pyrometallurgy was achieved through electrolysis. This was done to recover high-purity copper. The oxidation potentials of these metals are a fundamental part of the analysis of electrolytic separation of palladium and impurity metals. To achieve this, copper, iron, and nickel were dissolved in the electrolyte, and palladium and aluminum were found to be recoverable from anode slime. During the electrolysis for palladium separation, palladium was present in the anode slime and was obtained with a recovery of 97.46 % indicating almost no loss. 4N-grade copper was recovered from the electrodeposition layer at the cathode.

Keywords

Palladium Separation

High purity copper

Electrolytic process

Electronic waste

Recycle

폐 전자폐기물에서 건식정련 및 팔라듐 농축공정으로 제조된 조금속으로부터 팔라듐 분리 및 고순도 동 회수가 가능한 전해공정 연구를 수행하였다. 조금속 내 팔라듐 및 불순금속을 전해분리 시키기 위한 기초 연구로서 각 금속별 산화전위를 평가한 결과 구리, 철 및 니켈은 전해액에 용해되고, 팔라듐 및 알루미늄은 산화물 형태 슬라임 회수가 가능한 것으로 나타났다. 조금속 사용 팔라듐 분리 전해공정 시 팔라듐은 산화물 형태의 슬라임으로 분리되어 97.46 %의 손실이 거의 없는 팔라듐 회수가 가능하였고, 음극에서의 전착층에서는 4N급 구리를 회수하였다.

키워드

팔라듐 분리

고순도 동

전해공정

전자폐기물

재활용

References

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Ka-Young Shin, Seong-You Lee, Hong-Yoon Kang, 2021 : Analysis of Resource and GHG Reduction by Recycling Palladium in Plated Spent Catalyst Solution, J. of Korean Inst. of Resources Recycling, 30(3), pp.47-54.

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 30
No :6
Pages :76-82
Received Date : 2021-12-06
Revised Date : 2021-12-13
Accepted Date : 2021-12-14
DOI :https://doi.org/10.7844/kirr.2021.30.6.76

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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