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Effect of ionic liquid [MIm]HSO4 on WPCB metal-enriched scraps refined by slurry electrolysis
Qi, Yaping1; Yi, Xiaoxia1; Zhang, Yugai1; Meng, Fansong1; Shu, Jiancheng1; Xiu, Furong2; Sun, Zhi3; Sun, Shuhui4; Chen, Mengjun1
2019-11-01
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
Volume26Issue:32Pages:33260-33268
AbstractWaste printed circuit boards (WPCBs) are usually dismantled, crushed, and sorted to WPCB metal-enriched scraps, still containing an amount of non-metallic materials. This research used slurry electrolysis to refine these WPCB metal-enriched scraps and to examine if a standard ionic liquid, [MIm]HSO4, can replace H2SO4 in the system. The impact of the refinement process on metal migration and transformation is discussed in detail. The results demonstrated that metals in WPCB metal-enriched scraps could be successfully refined using slurry electrolysis, and [MIm]HSO4 can be used to replace H2SO4 in the system. When 80% of H2SO4 was replaced by [MIm]HSO4 (electrolyte of 200 mL, 30 g/L CuSO4 center dot 5H(2)O, 60 g/L NaCl, 130 g/L H2SO4, and 1.624 A for 4 h), the total metal recovery rate is 85%, and the purity, current efficiency, and particle size of cathode metal powder were 89%, 52%, and 3.77 mu m, respectively. Moreover, the microstructure of the cathode metal powder was dendritic in the H2SO4-CuSO4-NaCl slurry electrolysis system, whereas at an 80% [MIm]HSO4 substitution rate slurry electrolysis system, the cathode metal powder was irregular and accumulated as small-sized spherical particles. Thus, replacing inorganic leaching solvents with ionic liquids may provide a potential choice for the resources in WPCB metal-enriched scraps.
KeywordWPCBs Ionic liquid Slurry electrolysis Metals and nonmetals Refining
DOI10.1007/s11356-019-06337-x
Language英语
WOS KeywordPRINTED-CIRCUIT BOARDS ; COPPER POWDERS ; WASTE ; RECOVERY ; MANAGEMENT
Funding ProjectNational 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[18LZX414]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Funding OrganizationNational Natural Science Foundation of China ; Research Fund of Southwest University of Science and Technology
WOS IDWOS:000501757400052
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38440
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, Mianyang 621010, Sichuan, Peoples R China
2.Xian Univ Sci & Technol, Coll Geol & Environm, Xian 710054, Shaanxi, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
4.Inst Natl Rech Sci Energie Varennes, Mat & Telecommun, Varennes, PQ J3X 1S2, Canada
Recommended Citation
GB/T 7714
Qi, Yaping,Yi, Xiaoxia,Zhang, Yugai,et al. Effect of ionic liquid [MIm]HSO4 on WPCB metal-enriched scraps refined by slurry electrolysis[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2019,26(32):33260-33268.
APA Qi, Yaping.,Yi, Xiaoxia.,Zhang, Yugai.,Meng, Fansong.,Shu, Jiancheng.,...&Chen, Mengjun.(2019).Effect of ionic liquid [MIm]HSO4 on WPCB metal-enriched scraps refined by slurry electrolysis.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,26(32),33260-33268.
MLA Qi, Yaping,et al."Effect of ionic liquid [MIm]HSO4 on WPCB metal-enriched scraps refined by slurry electrolysis".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 26.32(2019):33260-33268.
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