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Abstract

A method for clean recovery of palladium is provided, including the following steps: mixing a palladium-containing material, a Ce⁴⁺-containing acidic solution, and an additive, subjecting a resulting mixture to leaching to obtain a Pd²⁺-containing solution, and subjecting the Pd²⁺-containing solution to electrolysis to obtain palladium. In the method, the palladium-containing material is subjected to solution leaching with Ce⁴⁺ as an oxidative leaching agent and a chlorine-containing additive. After leaching is complete, a Ce⁴⁺ and Pd²⁺-containing leaching liquor is subjected to electrolysis to realize the green regeneration of Ce⁴⁺ and palladium. The method of the present disclosure does not lead to the generation of NOx and waste liquid. The present disclosure can significantly reduce the environmental impact and production cost and has excellent economic benefits and application prospects.

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First Claim