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Systematic characterization of generation and management of e-waste in China

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Abstract

Over the last decade, there has been much effort to promote the management of e-waste in China. Policies have been affected to prohibit imports and to control pollution. Research has been conducted in laboratories and on large-scale industrial operations. A subsidy system to support sound e-waste recycling has been put in place. However, the handling of e-waste is still a concern in China and the issue remains unresolved. There has been relatively little work to follow up this issue or to interpret continuing problems from the perspective of sustainable development. This paper first provides a brief overview of conventional and emerging environmental pollution in Chinese “famous” e-waste dismantling areas, including Guiyu in Guangdong and Wenling in Zhejiang. Environmentalists have repeatedly proven that these areas are significantly polluted. Importing and backyard recycling are decreasing but are ongoing. Most importantly, no work is being done to treat or remediate the contaminated environmental media. The situation is exacerbated by the rising tide of e-waste generated by domestic update of various electronics. This study, therefore, employs a Sales Obsolescence Model approach to predict the generation of e-waste. When accounting for weight, approximately 8 million tons of e-waste will be generated domestically in 2015, of which around 50 % is ferrous metals, followed by miscellaneous plastic (30 %), copper metal and cables (8 %), aluminum (5 %), and others (7 %). Of this, 3.6 % will come from scrap PCBs and 0.2 % from lead CRT glass. While more and more end-of-life electronics have been collected and treated by formal or licensed recyclers in China in terms of our analysis, many of them only have dismantling and separation activities. Hazardous e-wastes, including those from PCBs, CRT glass, and brominated flame retardant (BFR) plastics, have become problematic and probably flow to small or backyard recyclers without environmentally sound management. Traditional technologies are still being used to recover precious metals—such as cyanide method of gold hydrometallurgy—from e-waste. While recovery rates of precious metals from e-waste are above 50 %, it has encountered some challenges from environmental considerations. Worse, many critical metals contained in e-waste are lost because the recovery rates are less than 1 %. On the other hand, this implies that there is opportunity to develop the urban mine of the critical metals from e-waste.

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Acknowledgments

The authors thank the “Hong Kong, Macao and Taiwan Science & Technology Cooperation Program of China” (2014DFM90170) from Ministry of Science and Technology of China, the Scientific Research Foundation of Introduced High Talent Financial Subsidies of Shenzhen University (000044), NSFC (21507090), and also thank the Shanghai Cooperative Centre for WEEE Recycling for funding and support. In addition, the authors would like to acknowledge Mr. Ned Miller for language editing and comments. We are also grateful to three anonymous reviewers for their instructive comments.

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  1. College of Civil Engineering, Shenzhen University, 518060, Shenzhen, China

    Huabo Duan

  2. Dongjiang Environmental Co., Ltd., 518057, Shenzhen, China

    Jiukun Hu & Yanjie Wang

  3. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, 100084, Beijing, China

    Quanyin Tan, Lili Liu & Jinhui Li

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  1. Huabo Duan
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Duan, H., Hu, J., Tan, Q. et al. Systematic characterization of generation and management of e-waste in China. Environ Sci Pollut Res 23, 1929–1943 (2016). https://doi.org/10.1007/s11356-015-5428-0

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