Recovery of palladium from waste solution of palladium plating

摘要

The object of the present invention is to develop a method for effectively recovering palladium in a plating waste liquid having a pH of 1.0 or less and containing metals such as Cr, Fe, and Ni as impurities and a palladium content of about 100 ppm or less.;      In order to achieve the object of the present invention, using palm activated carbon, only palladium is selectively adsorbed to activated carbon, and selectively separated from other impurity metals (Cr, Fe, Ni, Sn, Cu, etc.) to have a purity of about 95% or more. It is characterized by establishing a manufacturing process for recovering palladium metal.;Palladium can be effectively recovered from relatively low concentrations of palladium plating wastes, making the process simpler and less expensive to recover and purify compared to fractional precipitation or solvent extraction.;Plating waste, palm activated carbon, fractional precipitation, ion exchange resin, solvent extraction, electrolytic extraction