CAS OpenIR
Copper and gold recovery from CPU sockets by one-step slurry electrolysis
Li, Feifan1; Chen, Mengjun1; Shu, Jianchen1; Shirvani, Mehran2; Li, Yungui1; Sun, Zhi3; Sun, Shuhui4; Xu, ZhongHui1; Fu, Kaibin1; Chen, Shu1
2019-03-10
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume213Pages:673-679
AbstractRecently, the life span of electric and electronic products is becoming shorter and shorter because of the rapid technology innovation and the rising standard of consuming. This also leads to a stable annual increase of waste electric and electronic equipment (WEEE). Waste printed circuit boards, the base of almost all WEEE, are always the core of WEEE recycling. However, few studies are focused on the recovery of WPCBs electronic components. Here, in this study, CPU sockets were chosen as a representative electronic component to explore if slurry electrolysis can directly and simultaneously recycle copper and gold. Four factors, HCI concentration, pulp density, current density and reaction time, were discussed in detail. The results show that copper recovery rate first increases and decreases with the rise of HCI concentration, pulp density and reaction time, and it increases with the increase current density. Copper recovery rate and purity is up to 96.67% and 98.16% respectively at the optimum conditions (4 mol/L HCI, 75 g/L pulp density, 80 mA/cm(2 )and 4 h). One third of copper can be electrodeposited to the cathode plate, and be collected directly. 67% copper still exit in the electrolyte, which needs to be further recycled, and less than 1% copper are in the anode residue. Gold recovery rate first increases and then decreases with the rise of the four factors, reaching to the highest value of 95.73% (4 mol/L HCI, 100 g/L pulp density, 70 mA/cm(2) current density and 4 h). Gold mainly exits in the electrolyte, and little gold can be electrodeposited. Besides, the results of and SEM show that the obtained metal powder is mainly copper and copper powder particles are mainly dendritic. On the basis of these results, slurry electrolysis could be applied to the recovery of copper and gold from electronic component. (C) 2018 Elsevier Ltd. All rights reserved.
KeywordWaste electronic component CPU sockets Copper recovery HCl Gold Slurry electrolysis
DOI10.1016/j.jclepro.2018.12.161
Language英语
WOS KeywordPRINTED-CIRCUIT BOARDS ; ELECTRONIC WASTE ; MOBILE PHONES ; METALS ; MORPHOLOGIES ; POLLUTION
Funding ProjectNational Natural Science Foundation of China[21377104] ; Southwest University of Science and Technology[14tdgk01] ; Southwest University of Science and Technology[17LZX422] ; Southwest University of Science and Technology[17LZXT05] ; Southwest University of Science and Technology[16ycx040] ; Shanghai Collaborative Innovation Center for WEEE Recycling
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China ; Southwest University of Science and Technology ; Shanghai Collaborative Innovation Center for WEEE Recycling
WOS IDWOS:000461132600059
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28294
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Mengjun
Affiliation1.Southwest Univ Sci & Technol, Minist Educ, Key Lab Solid Waste Treatment & Resource Recycle, 59 Qinglong Rd, Mianyang 621010, Peoples R China
2.Isfahan Univ Technol, Dept Soil Sci, Coll Agr, Esfahan 8415683111, Iran
3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
4.Inst Natl Rech Sci Energie Mat & Telecommun, Varennes, PQ J3X 1S2, Canada
Recommended Citation
GB/T 7714
Li, Feifan,Chen, Mengjun,Shu, Jianchen,et al. Copper and gold recovery from CPU sockets by one-step slurry electrolysis[J]. JOURNAL OF CLEANER PRODUCTION,2019,213:673-679.
APA Li, Feifan.,Chen, Mengjun.,Shu, Jianchen.,Shirvani, Mehran.,Li, Yungui.,...&Chen, Shu.(2019).Copper and gold recovery from CPU sockets by one-step slurry electrolysis.JOURNAL OF CLEANER PRODUCTION,213,673-679.
MLA Li, Feifan,et al."Copper and gold recovery from CPU sockets by one-step slurry electrolysis".JOURNAL OF CLEANER PRODUCTION 213(2019):673-679.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Feifan]'s Articles
[Chen, Mengjun]'s Articles
[Shu, Jianchen]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Feifan]'s Articles
[Chen, Mengjun]'s Articles
[Shu, Jianchen]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Feifan]'s Articles
[Chen, Mengjun]'s Articles
[Shu, Jianchen]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.