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A semi-scaled experiment for metals separating and recovering from waste printed circuit boards by slurry electrolysis
Wang, Jiqin1; Huang, Zhouman2; Yang, Deze1; Zeng, Xiangfei1; Chen, Mengjun1; Shu, Jiancheng1; Sun, Zhi3; Sun, Shuhui4; Xiao, Zhengxue1
2021-03-01
Source PublicationPROCESS SAFETY AND ENVIRONMENTAL PROTECTION
ISSN0957-5820
Volume147Pages:37-44
Abstract

Waste printed circuit boards (WPCBs) are considered as the most complicated and valuable component among e-waste. Slurry electrolysis can separate and recover metals from the extremely complex WPCBs. To promote its industrial application, a 5000 mL scale experiment was conducted to confirm industrial feasibility. Those results showed that copper and total metal recovery rates were 94.5 % and 75.2 % under the optimized conditions (30 g/L WPCBs, 10 g/L CuSO4 center dot H2O, 30 g/L NaCl, 190 g/L H2SO4, 30 g/L H2O2, 298 K temperature, 250 r/min stirring speed, 300 A/m(2) and 8 h). The copper purity was 92.9 %, and SEM-EDS analyses indicated the main dendritic metals recovered were copper and lead. USEtox toxicity potential evaluation results demonstrated human toxicity and ecotoxicity of WPCBs sharply decreased after treatment. A cost analysis of this process indicated that the $ 1.0 cost was partially offset by the $ 1.9 return from 1 kg WPCBs. Thus, slurry electrolysis has a promising industrial future for e-waste recycling/utilization. (C) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

KeywordWpcbs Metals Separation Recovery Slurry Electrolysis Semi-scaled
DOI10.1016/j.psep.2021.09.030
Language英语
Funding ProjectNational Natural Science Foundation of China[51974262] ; Science & Technology Pillar Program of Sichuan Province[2019YFS0450]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Science & Technology Pillar Program of Sichuan Province
WOS IDWOS:000623811400003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48086
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Mengjun
Affiliation1.Southwest Univ Sci & Technol, Key Lab Solid Waste Treatment & Resource Recycle, Minist Educ, 59 Qinglong Rd, Mianyang 621010, Sichuan, Peoples R China
2.WuChang Univ Technol, Coll Life Sci, Wuhan 430223, Hubei, Peoples R China
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
Wang, Jiqin,Huang, Zhouman,Yang, Deze,et al. A semi-scaled experiment for metals separating and recovering from waste printed circuit boards by slurry electrolysis[J]. PROCESS SAFETY AND ENVIRONMENTAL PROTECTION,2021,147:37-44.
APA Wang, Jiqin.,Huang, Zhouman.,Yang, Deze.,Zeng, Xiangfei.,Chen, Mengjun.,...&Xiao, Zhengxue.(2021).A semi-scaled experiment for metals separating and recovering from waste printed circuit boards by slurry electrolysis.PROCESS SAFETY AND ENVIRONMENTAL PROTECTION,147,37-44.
MLA Wang, Jiqin,et al."A semi-scaled experiment for metals separating and recovering from waste printed circuit boards by slurry electrolysis".PROCESS SAFETY AND ENVIRONMENTAL PROTECTION 147(2021):37-44.
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