| Liquid-liquid hierarchical separation and metal recycling of waste printed circuit boards | |
| Chen, Bin1,2; He, Jie1; Xi, Yaoyao1; Zeng, Xiangfeng3; Kaban, Ivan4; Zhao, Jiuzhou1; Hao, Hongri1 | |
| Corresponding Author | He, Jie(jiehe@imr.ac.cn) ; Zhao, Jiuzhou(jzzhao@imr.ac.cn) |
| 2019-02-15 | |
| Source Publication | JOURNAL OF HAZARDOUS MATERIALS
 |
| ISSN | 0304-3894 |
| Volume | 364Pages:388-395 |
| Abstract | Waste electrical and electronic equipment is rapidly increasing worldwide, resulting in a large quantity of waste printed circuit boards (WPCBs). There is a great challenge on how to efficiently separate mixed metals in WPCBs, which consists of more than 10 elements including hazardous Cr, Pb and Cd. In this work, based on atomic interactions, a method of liquid-liquid hierarchical separation is developed to separate the mixed metals dissociated from the pyrolyzed WPCBs of mobile phones. The hierarchical separation of L -> LFe-rich + L-cu,L-Pb-rich, L-Cu,L-Pb-rich -> Lcu-rich + Lpb-rich and Lpb-rich -> SCu-dendritical + Lpb-rich produces four immiscible Fe-rich, Cu-rich, Cu-dendritical and Pb-rich substances. The separation rate between these substances can reach more than 96% in a super-gravity field of G = 1000g. Other metals selectively distribute in the four substances. The Fe-rich substance collects Cr, Co, Ni and Si. Almost all of Au and Ag are trapped in the Cu-rich and Cu-dendritical substances. The low-melting-point metals, i.e. Bi, Cd, In and Sn, are located in the Pb-rich substance. This work provides a green shortcut for efficiently separating and recycling overall metals in WPCBs. |
| Keyword | Waste printed circuit boards Metal recycling Liquid-liquid phase separation Immiscible alloys Super-gravity technology Pyrolysis |
| Funding Organization | National Nature Science Foundation of China ; key project of innovation foundation of IMR-CAS ; Alexander von Humboldt-Stiftung ; Natural Science Foundation of Liaoning Province of China |
| DOI | 10.1016/j.jhazmat.2018.10.022 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Nature Science Foundation of China[51574216] ; National Nature Science Foundation of China[51774264] ; National Nature Science Foundation of China[513741947] ; National Nature Science Foundation of China[51771210] ; key project of innovation foundation of IMR-CAS[SCJJ-2013-ZD-03] ; Alexander von Humboldt-Stiftung ; Natural Science Foundation of Liaoning Province of China[2015020172] |
| WOS Research Area | Engineering ; Environmental Sciences & Ecology |
| WOS Subject | Engineering, Environmental ; Environmental Sciences |
| WOS ID | WOS:000452926500043 |
| Publisher | ELSEVIER SCIENCE BV |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/130679 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | He, Jie; Zhao, Jiuzhou |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China 4.IFW Dresden, Inst Complex Mat, Helmholtzstr 20, D-01069 Dresden, Germany |
| Recommended Citation GB/T 7714 | Chen, Bin,He, Jie,Xi, Yaoyao,et al. Liquid-liquid hierarchical separation and metal recycling of waste printed circuit boards[J]. JOURNAL OF HAZARDOUS MATERIALS,2019,364:388-395. |
| APA | Chen, Bin.,He, Jie.,Xi, Yaoyao.,Zeng, Xiangfeng.,Kaban, Ivan.,...&Hao, Hongri.(2019).Liquid-liquid hierarchical separation and metal recycling of waste printed circuit boards.JOURNAL OF HAZARDOUS MATERIALS,364,388-395. |
| MLA | Chen, Bin,et al."Liquid-liquid hierarchical separation and metal recycling of waste printed circuit boards".JOURNAL OF HAZARDOUS MATERIALS 364(2019):388-395. |
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