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Sustainable electrochemical recovery of high-purity Cu powders from multi-metal acid solution by a centrifuge electrode
Wang, Mingyong1; Gong, Xuzhong2; Wang, Zhi2
2018-12-10
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume204Pages:41-49
Abstract

The green recovery of high value-added Cu products from electroplating sludge is an urgent challenge to the harmless disposal and sustainable utilization of hazardous waste. Hydrometallurgy based on leaching and electrodeposition is an environment-friendly process. A low-concentration and multi-metal solution is usually obtained after leaching. Generally, crude Cu products are only produced by electrodeposition. In this paper, a centrifuge electrode is proposed for the simple and green recovery of high-purity Cu powders by one-step electrodeposition from leaching solution of electroplating sludge. The current density of Cu electrodeposition can be enhanced based on the results of cyclic voltammetry. It is confirmed that the purity, recovery ratio and current efficiency of Cu products are obviously increased by the centrifuge electrode due to the enhanced mass transfer. The electrodeposition of metal impurities is effectively inhibited. The structure of Cu products is adjusted from foils to powders by the combination of Cu concentration and rotating speed. Particularly, high-purity Cu powders are electrodeposited on the centrifuge electrode from Cu-Ni mixed solution with 2 g L-1 Cu2+ and 2 g L-1 Ni2+. In addition, the purity, recovery ratio, current efficiency and particle size of Cu powders depend on H2SO4 concentration and current density. Cu powders with a purity of 99.9% are selectively separated from the multi-metal leaching solution of electroplating sludge. (C) 2018 Elsevier Ltd. All rights reserved.

KeywordHigh-purity Cu Powder Centrifuge Electrode Electrochemical Recovery Multi-metal Solution Electroplating Sludge
DOI10.1016/j.jclepro.2018.09.020
Language英语
WOS KeywordGalvanic Sludge ; Copper Recovery ; Sulfuric-acid ; Behavior
Funding ProjectNatural Science Foundation of China[51874020] ; Natural Science Foundation of China[51274180] ; Fundamental Research Funds for the Central Universities
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
Funding OrganizationNatural Science Foundation of China ; Fundamental Research Funds for the Central Universities
WOS IDWOS:000448092500005
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26270
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Mingyong
Affiliation1.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Mingyong,Gong, Xuzhong,Wang, Zhi. Sustainable electrochemical recovery of high-purity Cu powders from multi-metal acid solution by a centrifuge electrode[J]. JOURNAL OF CLEANER PRODUCTION,2018,204:41-49.
APA Wang, Mingyong,Gong, Xuzhong,&Wang, Zhi.(2018).Sustainable electrochemical recovery of high-purity Cu powders from multi-metal acid solution by a centrifuge electrode.JOURNAL OF CLEANER PRODUCTION,204,41-49.
MLA Wang, Mingyong,et al."Sustainable electrochemical recovery of high-purity Cu powders from multi-metal acid solution by a centrifuge electrode".JOURNAL OF CLEANER PRODUCTION 204(2018):41-49.
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