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

doi:10.1016/j.jhazmat.2018.10.022

CORC > 金属研究所 > 中国科学院金属研究所

	Liquid-liquid hierarchical separation and metal recycling of waste printed circuit boards
	Chen, Bin 1,3; He, Jie 3; Xi, Yaoyao 3; Zeng, Xiangfeng 4; Kaban, Ivan 2; Zhao, Jiuzhou 3; Hao, Hongri 3
刊名	JOURNAL OF HAZARDOUS MATERIALS
	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
DOI	10.1016/j.jhazmat.2018.10.022
通讯作者	He, Jie(jiehe@imr.ac.cn) ; Zhao, Jiuzhou(jzzhao@imr.ac.cn)
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
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000452926500043
资助机构	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
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/130678]
专题	金属研究所_中国科学院金属研究所
通讯作者	He, Jie; Zhao, Jiuzhou
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 2.IFW Dresden, Inst Complex Mat, Helmholtzstr 20, D-01069 Dresden, Germany 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 4.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China
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.