CAS OpenIR
Efficient Extraction of Lithium Ions from High Mg/Li Ratio Brine through the Synergy of TBP and Hydroxyl Functional Ionic Liquids
Bai, Ruibing1,2; Wang, Junfeng1; Cui, Li4; Yang, Shicheng1; Qian, Wei1; Cui, Penglei1; Zhang, Yanqiang1,3
2020-12-01
Source PublicationCHINESE JOURNAL OF CHEMISTRY
ISSN1001-604X
Volume38Issue:12Pages:1743-1751
AbstractThe Summary of main observation and conclusion: The extraction of Li+ from the high Mg/Li ratio brine was performed using hydroxyl functional ionic liquids (ILs) as the coextractant and tributyl phosphate (TBP) as the extractant. Firstly, the extractive system, 1-(2-hydroxyethyl)-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HOEmim][NTf2]) + TBP was proved to exhibit the highest extraction efficiency of Li+ (88.15%) from LiCl aqueous solutions among the extractants composed of different ILs, TBP, and ILs + TBP. Effects of various extraction parameters on the extraction efficiencies of Li+ and Mg2+ were then investigated. 95.01% of Li+ was extracted and the Li/Mg separation factor reached 405.76 in a single-stage at 278.15 K and O/A of 2 : 1. The extraction complexes were determined by the slope analysis method and ESI-MS analysis, and the metal complexes in the organic phase were indicated to be mainly [Li center dot 2TBP][NTf2]. The striping study showed that 92.86% of Li+ was stripped with 1.0 mol center dot L-1 HCl. 98% extraction capacity of the synergy extractants was remained after 5 regeneration cycles. The thermodynamic parameters (Delta G degrees, Delta H degrees, and Delta S degrees), together with the mechanism of the Li+ extraction were further demonstrated finally. According to the results, [HOEmim][NTf2] + TBP extraction system showed promising performance in extracting lithium from salt lake brine with high Mg/Li ratio.
KeywordFunctional ionic liquids Lithium Magnesium High Mg Li ratio Salt lake brine Extraction mechanism
DOI10.1002/cjoc.202000210
Language英语
WOS KeywordSALT LAKE BRINE ; SOLVENT-EXTRACTION ; ALKALINE BRINE ; RECOVERY ; SEPARATION ; MECHANISM
Funding ProjectNational Natural Science Foundation of China[21978302] ; National Natural Science Foundation of China[21706257] ; National Natural Science Foundation of China[21776292] ; Innovation Academy for Green Manufacture[IAGM2020DB05] ; Major Program of National Natural Science Foundation of China[21890762]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China ; Innovation Academy for Green Manufacture ; Major Program of National Natural Science Foundation of China
WOS IDWOS:000589830000001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42647
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Junfeng; Zhang, Yanqiang
Affiliation1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China
3.Zhengzhou Inst Emerging Ind Technol, Zhengzhou 450000, Henan, Peoples R China
4.Shanxi Univ, Inst Resources & Environm Engn, State Environm Protect Key Lab Efficient Utilizat, Taiyuan 030006, Shanxi, Peoples R China
Recommended Citation
GB/T 7714
Bai, Ruibing,Wang, Junfeng,Cui, Li,et al. Efficient Extraction of Lithium Ions from High Mg/Li Ratio Brine through the Synergy of TBP and Hydroxyl Functional Ionic Liquids[J]. CHINESE JOURNAL OF CHEMISTRY,2020,38(12):1743-1751.
APA Bai, Ruibing.,Wang, Junfeng.,Cui, Li.,Yang, Shicheng.,Qian, Wei.,...&Zhang, Yanqiang.(2020).Efficient Extraction of Lithium Ions from High Mg/Li Ratio Brine through the Synergy of TBP and Hydroxyl Functional Ionic Liquids.CHINESE JOURNAL OF CHEMISTRY,38(12),1743-1751.
MLA Bai, Ruibing,et al."Efficient Extraction of Lithium Ions from High Mg/Li Ratio Brine through the Synergy of TBP and Hydroxyl Functional Ionic Liquids".CHINESE JOURNAL OF CHEMISTRY 38.12(2020):1743-1751.
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