ABSTRACT
ABSTRACT A laboratory-scale electrochemical reactor using a platinized columbium screen anode and a stainless steel screen cathode, generating chemicals from a rock salt solution to precipitate heavy metals as a floating scum, is described. Removal of Cd, Cu, and Ni varies from 0.27 to 109.67 g/kwh with the effluent quality meeting the USEPA pretreatment effluent limitation. Favorable operating conditions are lower current density, higher initial metal concentration and deeper wastewater column. The collected scum is dissolved in sulfuric acid from which the concentrated metal is plated out onto a specific metal cathode in a separate reactor.
