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作者:

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

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摘要:

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.

关键词:

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

作者机构:

  • [ 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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来源 :

Chinese Journal of Rare Metals

ISSN: 0258-7076

年份: 2014

期: 3

卷: 38

页码: 516-526

被引次数:

WoS核心集被引频次: 0

SCOPUS被引频次: 2

ESI高被引论文在榜: 0 展开所有

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