Recovery of copper, tin and lead from the spent nitric etching solutions of printed circuit board and regeneration of the etching solution
作者： Man-Seung Lee , Jong-Gwan Ahn , Jae-Woo Ahn
DOI: 10.1016/S0304-386X(03)00045-8
关键词:
摘要: Abstract In order to recover valuable metals and regenerate the etching solution from spent nitric solutions of printed circuit board (PCB), solvent extraction, stripping, electrowinning, precipitation cementation experiments have been performed. Nitric acid was selectively extracted by TBP pure stripped distilled water. After extracting acid, copper metal obtained electrowinning tin ions were precipitated adjusting pH with Pb(OH)2. Lead purity 99% iron powder.
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