电子废弃物中金元素的绿色溶解与提取

A Green Chemistry Technique for Dissolution and Recovery of Gold from Electronic Wastes

电子废弃物中含有Au、Pt、Pd、Ag等多种贵重金属,其处理处置的无害化、资源化成为目前一项重要课题。本文通过使用安全的试剂来溶解金,从而达到从含金废弃物中回收金的目的,说明利用配体与金形成配合物从而有效降低溶金电极电势的化学原理。普及科学原理,树立科学理念。介绍电子废弃物处置的常识,普及绿色化学的观念,避免新的污染与危险,树立环境保护的观念。

Electronic wastes are a rich source of precious metals,e.g.,gold(Au),platinum(Pt),palladium(Pd)and silver(Ag).The recycling of these metals has significant environmental importance.This article demonstrated a chemical approach for recycling gold-containing wastes by dissolving gold with safe chemicals.In this reaction,a ligand and gold could form a coordination complex and thus decrease the electrode potential for gold dissolution.The aims of this article are to show the chemistry of chemical reactions using the dissolution of gold as an example,the presence and selection of chemical approaches for tackling some of the increasing environmental problems,the importance of our living environment and problems that we need to tackle with more efforts.