Journal of Chemistry and Chemical Research

Waste catalysts containing precious metals such as platinum, palladium, rhodium, and others possess high recovery value and significant environmental protection significance. To address issues in traditional recycling processes including high energy consumption, secondary pollution, and low recovery efficiency, this study developed an eco-friendly and efficient recycling process incorporating physical pretreatment, chemical leaching, solvent extraction, and bio-assisted extraction methods. Through optimized process parameters, the method achieved highly selective separation and recovery of precious metals. Experimental results demonstrate that this approach not only improves recovery rates but also significantly reduces chemical reagent usage and wastewater discharge, providing a viable pathway for precious metal recycling.

Waste catalyst; Precious metal recovery; Green process; Chemical leaching; Extraction technology