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Selective extraction of lithium from alkaline brine using HBTA-TOPO synergistic extraction system
Zhang, Licheng1,2,3; Li, Lijuan1,2; Shi, Dong1,2; Li, Jinfeng4; Peng, Xiaowu1,2,3; Nie, Feng1,2
2017-11-29
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
Volume188Pages:167-173
SubtypeArticle
AbstractInnovative application of Synergistic extraction system benzoyltrifluoroacetone(HBTA) and tri-n-octyl phosphine oxide(TOPO) for the extraction of lithium from alkaline brine were investigated. The extraction efficiencies of this extraction system were measured as a function of various extraction parameters, including pH value of aqueous phase, extraction temperature, and composition of organic phase. The extraction complex was determined by slope analysis method, which indicated that HBTA, TOPO and lithium formed a 2:1:1 complex. With this system, separation factor between lithium and sodium could be over 2100 by two stages countercurrent extraction according to McCabe Thiele diagram, and lithium extraction could be 95%. Co-extracted or restrained sodium in organic phase could be fully scrubbed by 0.5 M MCI at O/A = 10:1 and equilibrium pH = 4.68. Lithium reserved in organic phase was stripped completely into aqueous phase using 2.5 M HCl at O/A = 10:1 subsequently. Blank organic after stripping was regenerated by 2 M NaOH at R = 70% for next extraction circle. Stability test of organic phase was conducted with five-stage extraction process containing two stages extraction, single stage scrubbing, stripping and regeneration. Lithium yield reached 95.5% with high purity through the process, neither emulsification nor third phase was found during whole process. (C) 2017 Elsevier B.V. All rights reserved.
KeywordSynergistic Extraction Lithium Ion Alkaline Brine
WOS HeadingsScience & Technology ; Technology
WOS KeywordSALT LAKE BRINE ; SOLVENT-EXTRACTION ; BETA-DIKETONE ; TRIBUTYL-PHOSPHATE ; METAL-IONS ; SEPARATION ; RECOVERY ; MEMBRANES ; FECL3
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000412607500020
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6257
Collection青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China
2.Chinese Acad Sci, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100018, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Organ Chem, Shanghai 200030, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Licheng,Li, Lijuan,Shi, Dong,et al. Selective extraction of lithium from alkaline brine using HBTA-TOPO synergistic extraction system[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2017,188:167-173.
APA Zhang, Licheng,Li, Lijuan,Shi, Dong,Li, Jinfeng,Peng, Xiaowu,&Nie, Feng.(2017).Selective extraction of lithium from alkaline brine using HBTA-TOPO synergistic extraction system.SEPARATION AND PURIFICATION TECHNOLOGY,188,167-173.
MLA Zhang, Licheng,et al."Selective extraction of lithium from alkaline brine using HBTA-TOPO synergistic extraction system".SEPARATION AND PURIFICATION TECHNOLOGY 188(2017):167-173.
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