Extraction of rare earths by undiluted [P666,14][NO3] and DEHEHP, and the recovery of rare earths from lamp phosphors

doi:10.1007/s10163-019-00907-4

	Extraction of rare earths by undiluted [P666,14][NO3] and DEHEHP, and the recovery of rare earths from lamp phosphors
	Zhao, Junmei; Yu, Zhichun; Liu, Huizhou
刊名	JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
	2019-11-01
卷号	21 期号:6 页码:1518-1525
关键词	Rare earths Undiluted ionic liquid Synergistic extraction Recovery Waste phosphors
ISSN号	1438-4957
DOI	10.1007/s10163-019-00907-4
英文摘要	Ionic liquids (ILs) have been extensively used for separation. However, most of the current reported undiluted IL-based extraction systems still suffer some issues, such as, the heavy loss and a slower extraction kinetic. In this work, the extraction of rare earths (REs) by IL mixture of trihexyl(tetradecyl)phosphonium nitrate ([P666,14][NO3]) and the commercial extractant di(2-ethylhexyl) 2-ethylhexyl phosphonate (DEHEHP), abbreviated as PND, has been investigated. The addition of DEHEHP into IL [P666,14][NO3] not only decreases the viscosity of IL phase, but also produces an obvious synergistic effect. The synergistic enhancement coefficients (R) and the separation factors (alpha(Lu/M)) between Lu(III) and non-REs for PND were compared with the other two systems: [A336][NO3] (tricaprylmethylammonium nitrate)-DEHEHP (AND) and [P666,14][Cl] (trihexyl(tetradecyl)phosphonium chloride)-DEHEHP (PClD). In addition, alpha(Lu/M) of PND has also been compared to the conventional P507-kerosene (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester). Finally, PND was used to recover REs from the real feeding of fluorescent lamp phosphors and the extraction parameters have been optimized. It can be concluded that the prominent extraction ability of REs and higher alpha(Lu/M) of PND make it to be greatly suitable to recover REs from REs-containing secondary resources, such as the waste fluorescent lamp phosphors.
资助项目	"973" Project[2012CBA01202] ; National Natural Science Foundation of China[51672275]
WOS关键词	IONIC LIQUID ; SYNERGISTIC EXTRACTION ; SELECTIVE EXTRACTION ; FLUORESCENT LAMPS ; ACID-SOLUTIONS ; ELEMENTS ; WASTE ; PERSPECTIVES ; TEMPERATURE ; SEPARATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000500281100023
资助机构	"973" Project ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/38316]
专题	中国科学院过程工程研究所
通讯作者	Zhao, Junmei
作者单位	Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Junmei,Yu, Zhichun,Liu, Huizhou. Extraction of rare earths by undiluted [P666,14][NO3] and DEHEHP, and the recovery of rare earths from lamp phosphors[J]. JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT,2019,21(6):1518-1525.
APA	Zhao, Junmei,Yu, Zhichun,&Liu, Huizhou.(2019).Extraction of rare earths by undiluted [P666,14][NO3] and DEHEHP, and the recovery of rare earths from lamp phosphors.JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT,21(6),1518-1525.
MLA	Zhao, Junmei,et al."Extraction of rare earths by undiluted [P666,14][NO3] and DEHEHP, and the recovery of rare earths from lamp phosphors".JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT 21.6(2019):1518-1525.