文章基本信息

标题：Development of an Integrated Model to Recover Precious Metals from Electronic Scrap - A Novel Strategy for E-Waste Management
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作者：Viraja Bhat ; Viraja Bhat ; Prakash Rao 等
期刊名称：Procedia - Social and Behavioral Sciences
印刷版ISSN：1877-0428
出版年度：2012
卷号：37
页码：397-406
DOI：10.1016/j.sbspro.2012.03.305
语种：English
出版社：Elsevier
摘要：AbstractThe authors in this paper makes an attempt to propose a novel integrated model for the recovery of precious metals (gold - Au and silver - Ag) for the management of e-waste using a combination of hydrometallurgical (chemical) and biometallurgical (low cost biomass) processes. Chemical process involves leaching of gold/silver from electronic scrap using cyanide. The leachate containing gold/silver complex thus obtained is then subjected to biosorption process using low-cost biomass. The model proposed by us will help to strengthen the ‘processing’ part of the functional elements employed for proficient e-waste management. Feasibility study was also conducted to explore the possibility of removal/recovery of silver-cyanide using low-cost biosorbents. Results showed that Eicchornia root biomass and Waste tea powder were efficient biosorbents for leached silver-cyanide from electronic scrap. The concentrated silver-cyanide recovered could further be used as an input material for electroplating industry.
关键词：Biometallurgy;Biosorbent;E-waste management;Hydrometallurgy;Integrated model;Recycling;Recovery