Current Status on Leaching Precious Metals from Waste Printed Circuit Boards

By Zhang Yanhua, Shili Liu, H. Xie, Xianlai Zeng, Jinhui Li. 2012

177 citations recorded by the source corpus.

Abstract Current research on leaching precious metals from waste printed circuit boards (PCBs) in the world is introduced. In the paper, hydrometallurgical processing techniques including cyanide leaching, thiourea leaching, thiosulfate leaching, and halide leaching of precious metals are addressed in detail. In order to develop an environmentally friendly technique for recovery of precious metals from Waste PCBs, a critical comparison of main leaching methods is analyzed based on three-scale analytic hierarchy process (AHP). The results suggest that thiourea leaching and iodide leaching make more possible to replace cyanide leaching.

Subfields: Biomedical Engineering, Industrial and Manufacturing Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/31885363bfbdfe88c622736f121f452333d2f83a