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Analyzing the environmental impact of copper-based mixed waste recycling-a LCA case study in China
Zhang, Wenbiao1; Li, Zehong1,2; Dong, Suocheng1,2; Qian, Peng3; Ye, Shufeng3; Hu, Shuhan1; Xia, Bing1; Wang, Chunying1,2
2021-02-15
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume284Pages:12
Corresponding AuthorLi, Zehong(lizehong@igsnrr.ac.cn) ; Qian, Peng(pqian@ipe.ac.cn)
AbstractCopper-based mixed wastes include copper-containing wastes from the chemical, metallurgy, copper processing, printing, electronic component manufacturing, and other industries. Copper-based mixed wastes have high humidity and a significantly lower copper content than general waste copper, pose serious environmental hazards, and are very difficult to recover. The recycling of copper-based mixed wastes has important economic and environmental significance. Chinese companies have started extracting copper and other metals from copper-based waste mixtures and have achieved a high economic efficiency. This paper assesses the environmental impacts of copper-based mixed waste recycling and suggests possible optimization measures for the production process with respect to environmental impacts. The life cycle assessment (LCA) method is adopted to evaluate the effects of different production processes and to compare the environmental impacts of copper recovery from copper-based mixed waste recycling to the environmental impacts of primary and secondary copper production. Sensitivity analysis is conducted to estimate and evaluate the effects of possible production process optimization measures on environmental impacts. The results show the following: 1) The environmental impact of the copper-based mixed waste recovery process is generally superior to that of primary copper production in China on average, while it is inferior to that of secondary copper production. For example, the fossil energy consumption in primary copper production accounts for 74.9% of the impact of this process. 2) Smelting is the production process with the greatest environmental impact throughout the life cycle of copper-based mixed waste, accounting for 64.5% of the normalized index of the total environmental impact; and electrolysis and zinc recovery reach 19.8% and 12.1% of the total normalized index, respectively. 3) The raw materials and emission components with the largest environmental impacts are the carbon emissions from coal use and carbon dioxide emissions during smelting, the use of electricity during electrolysis, and the use of heavy oil and lime as raw materials during refining; these five items account for 69.7% of the total environmental impact. Thus, efforts at process improvement should focus on the full life cycle of energy utilization in the smelting process and on energy and material depletion in the refining and electrolysis processes. Specific process improvements and simulation analyses are important directions for further research. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordCopper recovery Ecological efficiency Life cycle assessment Recycling industry Metal recycling
DOI10.1016/j.jclepro.2020.125256
WOS KeywordLIFE-CYCLE ASSESSMENT
Indexed BySCI
Language英语
Funding ProjectKey Deployment Project of the Chinese Academy of Sciences[ZDRWZS201812] ; Project of Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A16]
Funding OrganizationKey Deployment Project of the Chinese Academy of Sciences ; Project of Innovation Academy for Green Manufacture, Chinese Academy of Sciences
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS IDWOS:000609033000002
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/136337
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi, Zehong; Qian, Peng
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, 11A Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, 380 Huaibeizhuang, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, 1 North Second St, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Wenbiao,Li, Zehong,Dong, Suocheng,et al. Analyzing the environmental impact of copper-based mixed waste recycling-a LCA case study in China[J]. JOURNAL OF CLEANER PRODUCTION,2021,284:12.
APA Zhang, Wenbiao.,Li, Zehong.,Dong, Suocheng.,Qian, Peng.,Ye, Shufeng.,...&Wang, Chunying.(2021).Analyzing the environmental impact of copper-based mixed waste recycling-a LCA case study in China.JOURNAL OF CLEANER PRODUCTION,284,12.
MLA Zhang, Wenbiao,et al."Analyzing the environmental impact of copper-based mixed waste recycling-a LCA case study in China".JOURNAL OF CLEANER PRODUCTION 284(2021):12.
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