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Technical and environmental assessment of gold recovery from secondary streams obtained in the processing of waste printed circuit boards

Research paper by Árpád Imre-Lucaci, Melinda Nagy, Florica Imre-Lucaci, Szabolcs Fogarasi

Indexed on: 14 Oct '16Published on: 13 Oct '16Published in: Chemical Engineering Journal



Abstract

The current study focuses on the technical and environmental assessment of gold extraction from the solid residue obtained during the recovery of base metals from waste printed circuit boards (WPCBs). In the preliminary stage, the process involves the dissolution of gold using the H2O2-HCl leaching system followed by the electrowinning of a high purity gold deposit from the obtained leaching solution. The technical performance of the process was evaluated on the basis of the efficiency factor for the H2O2 and HCl usage, current and dissolution efficiency and specific energy consumption for gold electrowinning.

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