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Recovery of lithium from alkaline brine by solvent extraction with functionalized ionic liquid
Yang, Shicheng1,2; Liu, Guowei2; Wang, Junfeng2; Cui, Li2; Chen, Yongmei1
2019-08-01
Source PublicationFLUID PHASE EQUILIBRIA
ISSN0378-3812
Volume493Pages:129-136
AbstractLithium 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.
KeywordLithium extraction Alkaline brine Functionalized ionic liquid Mechanisms
DOI10.1016/j.fluid.2019.04.015
Language英语
WOS KeywordAQUEOUS-SOLUTION ; SELECTIVE EXTRACTION ; TRIBUTYL-PHOSPHATE ; MECHANISM ; EQUILIBRIA ; SEPARATION ; ELECTRODE ; KEROSENE ; BUTYL
Funding ProjectFujian 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 Research AreaThermodynamics ; Chemistry ; Engineering
WOS SubjectThermodynamics ; Chemistry, Physical ; Engineering, Chemical
Funding OrganizationFujian 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
WOS IDWOS:000470338600014
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/29918
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Junfeng; Chen, Yongmei
Affiliation1.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
Recommended Citation
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.
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