Studies related to recovery of gold from a spent thiosulphate-sulphite electrolyte using an electrolytic cell

Sobri, S; Roy, S; Kalman, E; Nagyp, P; Lakatos, M

doi:10.1149/1.2214595

Studies related to recovery of gold from a spent thiosulphate-sulphite electrolyte using an electrolytic cell

Lookup NU author(s): Shafreeza Sobri, Professor Sudipta Roy

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Abstract

Interest has grown in developing non-toxic electrolytes for gold electrodeposition to replace the conventional cyanide-based bath for long term sustainability of gold electroplating. One such alternative electrolyte is a solution containing thiosulphate and sulphite, which has been developed specially for microelectronics applications. However, at the end of the electrodeposition process, the spent electrolyte contains a significant amount of gold. This study has been initiated to investigate the feasibility of gold recovery from a spent thiosulphate-sulphite electrolyte. copyright The Electrochemical Society.