Selective extraction of lithium from alkaline brine using HBTA-TOPO synergistic extraction system

doi:10.1016/j.seppur.2017.07.028

ISL OpenIR > 青海盐湖研究所知识仓储

	Selective extraction of lithium from alkaline brine using HBTA-TOPO synergistic extraction system
	Zhang, Licheng; Li, Lijuan; Shi, Dong; Li, Jinfeng; Peng, Xiaowu; Nie, Feng
第一作者	Zhang, Licheng
	2017-11-29
发表期刊	SEPARATION AND PURIFICATION TECHNOLOGY
ISSN	1383-5866
卷号	188 页码:167-173
关键词	Synergistic Extraction Lithium Ion Alkaline Brine
摘要	Innovative 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.
DOI	10.1016/j.seppur.2017.07.028
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6257
专题	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
推荐引用方式 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.