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Author:

Li, Ruiqing (Li, Ruiqing.) | Wang, Wei (Wang, Wei.) (Scholars:王伟) | Wu, Yufeng (Wu, Yufeng.) (Scholars:吴玉锋) | Zhang, Qijun (Zhang, Qijun.)

Indexed by:

EI Scopus PKU CSCD

Abstract:

Owing to excellent electrical conductivity, ductility and low contact electrical resistance for inserting connections, gold was widely used in printed circuit boards (PCBs) of electric and electronic equipment (EEE). Both technological innovation and update rate of EEE shortened the average lifespan of EEE. As a result, the amounts of waste PCBs dramatically increased . Therefore, on the basis of the current situation of gold resources in China, recycling gold from waste PCBs received wide concerns. This paper reported the characteristics and recycling values of waste PCBs. An integrated recycling process for gold from waste PCBs was reviewed in detail, including pretreatment, metal enrichment, leaching of gold and gold recovery. Meanwhile, the advantages and disadvantages existed in current recycling methods were summarized, based on a comparative analysis of various technologies from economic benefits, environmental impact, and feasibility of industrialization. The future research trends of recycling technology for waste PCBs would be focused on reducing the costs and pollution, integrating use of multiple techniques, and increasing the recovery rate and purity of gold. Additional research would be needed in searching new processing equipment and environmentally friendly technologies to recover gold from waste PCBs in China.

Keyword:

Environmental impact Gold Oscillators (electronic) Metal recovery Electronic Waste Environmental technology Printed circuit boards Timing circuits Recycling

Author Community:

  • [ 1 ] [Li, Ruiqing]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 2 ] [Wang, Wei]Institute of Recycling Economy, Beijing University of Technology, Beijing 100124, China
  • [ 3 ] [Wu, Yufeng]Institute of Recycling Economy, Beijing University of Technology, Beijing 100124, China
  • [ 4 ] [Zhang, Qijun]Institute of Recycling Economy, Beijing University of Technology, Beijing 100124, China

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Source :

Chinese Journal of Rare Metals

ISSN: 0258-7076

Year: 2014

Issue: 3

Volume: 38

Page: 516-526

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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