Development of green recovery process of precious metal in waste catalyst
废催化剂中贵金属绿色回收工艺开发

摘要

废催化剂中含有铂、钯、钯、铑等贵金属，其回收价值高且对环境保护具有重要意义。针对传统回收工艺存在的高能耗、二次污染和回收效率低等问题，研究开发了绿色高效的回收流程，包括物理预处理、化学浸出、溶剂萃取与生物辅助提取等方法。通过优化工艺参数，实现了贵金属的高选择性分离和回收。实验结果表明，该工艺在提高回收率的同时显著降低了化学药剂使用量和废水排放，为贵金属循环利用提供了可行途径。

Abstract

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.