Screening of variables affecting the selective leaching of valuable metals from waste motherboards' PCBs.

ABSTRACT: The presence of valuable and hazardous metals in waste printed circuit boards, especially, motherboards, makes their recovery necessary as implies great economic and environmental advantages and develops urban mining processes. Hence, this research is focused on the selective leaching of Cu, Pb, and Sn as base metals using nitric acid and hydrochloric acid and Au, Ag, and Pd as precious metals using thiourea and sodium thiosulfate from waste motherboards' PCBs in a sequential eco-friendly two-stage process. Previously, thiourea and sodium thiosulfate were used as leaching agents to investigate their applicability for the leaching of metals from PCBs in a single-stage process. Screening experimental design was applied to screen the variables affecting the leaching process in order to evalua

SUBMITTER: Rahimi V 

PROVIDER: S-EPMC12695914 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature