Effect of electrolyte reuse on metal recovery from waste CPU slots by slurry electrolysis

doi:10.1016/j.wasman.2019.06.034

	Effect of electrolyte reuse on metal recovery from waste CPU slots by slurry electrolysis
	Yi, Xiaoxia 4; Qi, Yaping 4; Li, Feifan 4; Shu, Jiancheng 4; Sun, Zhi 2; Sun, Shuhui 1; Chen, Mengjun 2,4; Pu, Shengyan 3
刊名	WASTE MANAGEMENT
	2019-07-15
卷号	95 页码:370-376
关键词	Waste CPU slots Slurry electrolysis Electrolyte reuse Precious metal Metal distribution
ISSN号	0956-053X
DOI	10.1016/j.wasman.2019.06.034
英文摘要	As an indispensable part of printed circuit boards (PCBs), central processing unit (CPU) slots contain a significant amount of precious metals which makes economic sense to recycle these materials. Slurry electrolysis is an attractive approach for electronic waste (e-waste) recycling. In this study, the effect of electrolyte reuse on the recovery of metals (Primarily aluminum, nickel, copper, lead, silver, palladium, platinum and gold), from waste CPU slots by slurry electrolysis is discussed in detail. These results show that metal recovery rate, more than 95% for all 13 cycles, was not affected by slurry electrolyte reuse during metal recycling from waste CPU slots, though the reuse of slurry electrolyte greatly impacted the distribution of metals in the anode residues, electrolyte and cathode metal powders. However, slurry electrolysis recovered metals from waste CPU slots and the effect of electrolyte reuse on the recovery of metals from waste CPU slots is discussed for the first time in this study. This could benefit the recycling process since it could improve cathode metal powders recovery rates by approximately 2 times. The acid usage could be significantly reduced by electrolyte reuse when compared to fresh electrolyte. Therefore, electrolyte reuse is demonstrated and slurry electrolysis is a feasible and potentially economically friendly choice for industrial e-waste recycling. (C) 2019 Published by Elsevier Ltd.
资助项目	Key Research and Development Projects of Sichuan Province[2019YFS0450] ; National Natural Science Foundation of China[21377104] ; Research Fund of Southwest University of Science and Technology[14tdgk01] ; Research Fund of Southwest University of Science and Technology[17LZX422] ; Research Fund of Southwest University of Science and Technology[17LZXT05] ; Research Fund of Southwest University of Science and Technology[18LZX412]
WOS关键词	PRINTED-CIRCUIT BOARDS ; ELECTROCHEMICAL DISSOLUTION ; PRECIOUS METALS ; COPPER ; GOLD ; EXTRACTION
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000499920700036
资助机构	Key Research and Development Projects of Sichuan Province ; National Natural Science Foundation of China ; Research Fund of Southwest University of Science and Technology
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/38306]
专题	中国科学院过程工程研究所
通讯作者	Chen, Mengjun; Pu, Shengyan
作者单位	1.Inst Natl Rech Sci Energie Mat & Telecommun, Varennes, PQ J3X 1S2, Canada 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 3.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, 1 Dongsanlu, Chengdu 610059, Sichuan, Peoples R China 4.Southwest Univ Sci & Technol, Minist Educ, Key Lab Solid Waste Treatment & Resource Recycle, Mianyang 621010, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Yi, Xiaoxia,Qi, Yaping,Li, Feifan,et al. Effect of electrolyte reuse on metal recovery from waste CPU slots by slurry electrolysis[J]. WASTE MANAGEMENT,2019,95:370-376.
APA	Yi, Xiaoxia.,Qi, Yaping.,Li, Feifan.,Shu, Jiancheng.,Sun, Zhi.,...&Pu, Shengyan.(2019).Effect of electrolyte reuse on metal recovery from waste CPU slots by slurry electrolysis.WASTE MANAGEMENT,95,370-376.
MLA	Yi, Xiaoxia,et al."Effect of electrolyte reuse on metal recovery from waste CPU slots by slurry electrolysis".WASTE MANAGEMENT 95(2019):370-376.