Recovery of lithium from alkaline brine by solvent extraction with functionalized ionic liquid

doi:10.1016/j.fluid.2019.04.015

	Recovery of lithium from alkaline brine by solvent extraction with functionalized ionic liquid
	Yang, Shicheng 1,2; Liu, Guowei 2; Wang, Junfeng 2; Cui, Li 2; Chen, Yongmei 1
刊名	FLUID PHASE EQUILIBRIA
	2019-08-01
卷号	493 页码:129-136
关键词	Lithium extraction Alkaline brine Functionalized ionic liquid Mechanisms
ISSN号	0378-3812
DOI	10.1016/j.fluid.2019.04.015
英文摘要	Lithium recovery from alkaline brine was carried out by solvent extraction (SX) using a hydroxyl-functionalized ionic liquid, 1-hydroxyethyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)imide ([OHEMIM][NTf2]) and a neutral ligand, trialkyl phosphine oxide (Cyanex923) as the extractants. Effect of extraction parameters, i.e. concentration of ionic liquid, extraction time, pH value of aqueous phase, phase ratio and mole ratio of sodium to lithium, on lithium extraction efficiency have been studied. Under the optimal parameters, over 93% of lithium was extracted in one single run. The extraction mechanism of lithium was investigated by the combination method of experiment and UV-visible spectroscopic characterization, and it was found that the ion exchange predominated during the extraction process. The extraction complex was determined by a slope analysis method, indicating that Cyanex923, Li+ and [NTf2](-) formed a 2:1:1 complex. The thermodynamic study indicated that lithium extraction reaction was spontaneous. Based on the above results, [OHEMIM][NTf2]-Cyanex923 extraction system showed a promising application in the recovery of lithium from alkaline brine. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	Fujian Institute of Innovation ; Chinese Academy of Sciences[FJCXY18040101] ; Key Program of National Natural Science Foundation of China[91434203] ; Key Research Program of Frontier Sciences CAS[QYZDY-SSW-JSC011] ; National Natural Science Foundation of China[21706257] ; National Natural Science Foundation of China[21776292]
WOS关键词	AQUEOUS-SOLUTION ; SELECTIVE EXTRACTION ; TRIBUTYL-PHOSPHATE ; MECHANISM ; EQUILIBRIA ; SEPARATION ; ELECTRODE ; KEROSENE ; BUTYL
WOS研究方向	Thermodynamics ; Chemistry ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000470338600014
资助机构	Fujian Institute of Innovation ; Chinese Academy of Sciences ; Key Program of National Natural Science Foundation of China ; Key Research Program of Frontier Sciences CAS ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/29917]
专题	中国科学院过程工程研究所
通讯作者	Wang, Junfeng; Chen, Yongmei
作者单位	1.Beijing Univ Chem Technol, Beijing 100029, Peoples R China 2.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yang, Shicheng,Liu, Guowei,Wang, Junfeng,et al. Recovery of lithium from alkaline brine by solvent extraction with functionalized ionic liquid[J]. FLUID PHASE EQUILIBRIA,2019,493:129-136.
APA	Yang, Shicheng,Liu, Guowei,Wang, Junfeng,Cui, Li,&Chen, Yongmei.(2019).Recovery of lithium from alkaline brine by solvent extraction with functionalized ionic liquid.FLUID PHASE EQUILIBRIA,493,129-136.
MLA	Yang, Shicheng,et al."Recovery of lithium from alkaline brine by solvent extraction with functionalized ionic liquid".FLUID PHASE EQUILIBRIA 493(2019):129-136.