Recovery of silver from silver chloride residues.
A new chemical process for recovering silver metal from waste silver chloride residues is described. The silver chloride is digested in an oxidizing mixture before complexation with ammonia. High-purity free silver metal is precipitated from solution by the addition of ascorbic acid as the reducing agent.
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Department of Chemistry, University of Northern Iowa, Cedar Falls, IA 50613, U.S.A.