Copper and gold recovery from CPU sockets by one-step slurry electrolysis
文献类型：期刊论文
| 作者 | Li, Feifan1; Chen, Mengjun1; Shu, Jianchen1; Shirvani, Mehran2; Li, Yungui1; Sun, Zhi3; Sun, Shuhui4; Xu, ZhongHui1; Fu, Kaibin1; Chen, Shu1 |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2019-03-10 |
| 卷号 | 213页码:673-679 |
| 关键词 | Waste electronic component CPU sockets Copper recovery HCl Gold Slurry electrolysis |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2018.12.161 |
| 英文摘要 | Recently, 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. |
| WOS关键词 | PRINTED-CIRCUIT BOARDS ; ELECTRONIC WASTE ; MOBILE PHONES ; METALS ; MORPHOLOGIES ; POLLUTION |
| 资助项目 | National 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研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000461132600059 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foundation of China ; Southwest University of Science and Technology ; Shanghai Collaborative Innovation Center for WEEE Recycling |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28294]  |
| 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, 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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：过程工程研究所
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