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Recovery of high purity copper from waste printed circuit boards of mobile phones by slurry electrolysis with ammonia-ammonium system

文献类型：期刊论文

作者Wang, Jiqin1; Chen, Shuyuan1; Zeng, Xiangfei1; Huang, Jinfeng1; Liang, Qian1; Shu, Jiancheng1; Chen, Mengjun1; Xiao, Zhengxue1; Zhao, Hongbo1,2; Sun, Zhi3
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2021-11-15
卷号275页码:12
关键词WPCB-MPs Recycling Copper Slurry electrolysis Ammonia-ammonium carbonate
ISSN号1383-5866
DOI10.1016/j.seppur.2021.119180
英文摘要Waste printed circuit boards (WPCBs) are identified to be the most complex recycling materials among waste electrical and electronic equipment (WEEE). Slurry electrolysis with acidic system can directly separate and recover copper from WPCBs while current efficiency and purity were generally reduced due to deposition of impurity metals and the hydrogen evolution during recovery process. In ammonia-based system, copper can be selectively extracted and copper (II) ammine complexes generally react with metallic copper to form copper (I) ammine complexes, promoting current efficiency and purity. Therefore, an efficient ammonia-ammonium carbonate slurry electrolysis system is proposed for high purity copper recycling from waste printed circuit boards of mobile phones (WPCB-MPs). The factors affecting copper current efficiency and recovery rate are systematically discussed. These results indicate that appropriate increasing NH3 center dot H2O, (NH4)2CO3, Cu2+, NaCl concentration, solid-to-liquid ratio, current density and reaction time could effectively increase copper recovery rate and current efficiency. The current efficiency and recovery rate of copper are 95.2 and 90.4%, respectively under the optimum test conditions of 20 g/L Cu2+, 0.25 mol/L (NH4)2CO3, 4 mol/L NH3 center dot H2O, 30 g/L solid-to-liquid ratio, 1 mol/L NaCl, 20 mA/cm2, 3 h. Moreover, copper could be recovered at the cathode with a purity of 99.97%. Compared with acidic system, this study provides an efficient approach to recover high purity copper from WPCB-MPs, showing a prospective future for WEEE resource recycling.
WOS关键词ELECTRONIC WASTE ; METALS ; GENERATION ; MANAGEMENT ; LITHIUM ; CATHODE ; SULFATE ; POWDERS
资助项目National Natural Science Foundation of China[51974262] ; Science & Technology Pillar Program of Sichuan Province[2019YFS0450] ; Opening Project of Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education[19kfgk01]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000696784000003
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Science & Technology Pillar Program of Sichuan Province ; Opening Project of Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education
源URL[http://ir.ipe.ac.cn/handle/122111/50181]  
专题中国科学院过程工程研究所
通讯作者Chen, Mengjun
作者单位1.Southwest Univ Sci & Technol, Key Lab Solid Waste Treatment & Resource Recycle, Minist Educ, Mianyang 621010, Peoples R China
2.Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Jiqin,Chen, Shuyuan,Zeng, Xiangfei,et al. Recovery of high purity copper from waste printed circuit boards of mobile phones by slurry electrolysis with ammonia-ammonium system[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,275:12.
APA Wang, Jiqin.,Chen, Shuyuan.,Zeng, Xiangfei.,Huang, Jinfeng.,Liang, Qian.,...&Sun, Zhi.(2021).Recovery of high purity copper from waste printed circuit boards of mobile phones by slurry electrolysis with ammonia-ammonium system.SEPARATION AND PURIFICATION TECHNOLOGY,275,12.
MLA Wang, Jiqin,et al."Recovery of high purity copper from waste printed circuit boards of mobile phones by slurry electrolysis with ammonia-ammonium system".SEPARATION AND PURIFICATION TECHNOLOGY 275(2021):12.

入库方式： OAI收割

来源：过程工程研究所

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