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Liquid-liquid hierarchical separation and metal recycling of waste printed circuit boards

文献类型：期刊论文

作者Chen, Bin2,3; He, Jie2; Xi, Yaoyao2; Zeng, Xiangfeng1; Kaban, Ivan4; Zhao, Jiuzhou2; Hao, Hongri2
刊名JOURNAL OF HAZARDOUS MATERIALS
出版日期2019-02-15
卷号364页码:388-395
关键词Waste printed circuit boards Metal recycling Liquid-liquid phase separation Immiscible alloys Super-gravity technology Pyrolysis
ISSN号0304-3894
DOI10.1016/j.jhazmat.2018.10.022
英文摘要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.
资助项目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研究方向Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000452926500043
出版者ELSEVIER SCIENCE BV
源URL[http://210.72.129.5/handle/321005/123807]  
专题中国科学院沈阳应用生态研究所
通讯作者He, Jie; Zhao, Jiuzhou
作者单位1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
4.IFW Dresden, Inst Complex Mat, Helmholtzstr 20, D-01069 Dresden, Germany
推荐引用方式
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.

入库方式： OAI收割

来源：沈阳应用生态研究所

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