期刊
JOURNAL OF CLEANER PRODUCTION
卷 248, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2019.119216
关键词
Secondary raw materials; Electronics; e-waste management; Industrial ecology; Circular economy; Critical raw materials
资金
- Beatriu de Pinos postdoctoral programme of the Government of Catalonia's Secretariat for Universities and Research of the Ministry of Economy and Knowledge [2016 BP 00132]
- Erasmusthornprogramme of the European Commission
- Joint European Master in Environmental Studies: Cities and Sustainability [JEMES CiSu AAU 2016/No. 1]
Cities are becoming one of the greatest generators of waste and thus a potential source of secondary materials. One of the most attractive waste streams in cities is waste electrical and electronic equipment (WEEE) as they contain many valuable metals, mainly in the printed circuit board (PCB), with a high risk of a disruption in their supply. Many of the PCBs contained in small WEEE are separated by destructive operations, as the economic feasibility of their separation using non-destructive operations remains unclear. This paper examines the feasibility of separating the PCB and the permanent magnets (PMs) contained in hard disk drives (HDD) using non-destructive operations. The economic cost of separating these parts is evaluated by the disassembly sequences, the disassembly schemes, and using the 'ease of Disassembly Metric' (eDiM). In HDD, the economic cost for the non-destructive separation of the PCB is V0.05 while the cost to harvest the PCB as well as the PMs is V0.39. In both cases, such cost is well below the estimated economic value of the gold, silver, and palladium contained in the PCB (V0.85). As a result, the paper concludes that the separation of the PCB and the PMs of HDDs is economically profitable. Measures for promoting the non-destructive separation of the PCBs and the PM of HDDs should be further promoted, as they could help improve the supply of secondary raw materials. (c) 2019 Elsevier Ltd. All rights reserved.
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