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Light, Middle, and Heavy Rare-Earth Group Separation: A New Approach via a Liquid-Liquid-Liquid Three-Phase System
Sui, Na1,2,3; Huang, Kun1; Zhang, Chao1,2,3; Wang, Ning1,2,3; Wang, Fuchun1,2,3; Liu, Huizhou1
2013-05-01
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume52Issue:17Pages:5997-6008
AbstractThe present work puts forward a new strategy to achieve group separation of light, middle, and heavy rare-earth ions by liquid-liquid-liquid three-phase systems. Experimental results indicated that heavy rare-earth ion, Yb(III), can be selectively extracted into the organic top phase, while middle rare-earth ion, Eu(III), and light rare-earth ion, La(III), can be enriched, respectively, into PEG rich middle phase and (NH4)(2)SO4-rich bottom aqueous phase of Cyanex272/PEG/(NH4)(2)SO4-H2O three-liquid-phase system. Various influences of aqueous pH, (NH4)(2)SO4 concentrations, complexing agents, polymers, and their added amount on three-liquid-phase separation of La, Eu, and Yb were investigated. Besides, a possible partitioning mechanism for three rare-earth ions was discussed. The present work highlights the possibility of employing the discrepancy in selective partitioning behaviors of different rare-earth ions (such as La, Ce, Eu, Gd, Yb, and Lu) into different liquid layers of three-liquid-phase system to achieve one-step group separation of light, middle, and heavy rare-earth ions. In comparison with traditional organic-aqueous biphasic extraction for group separation of rare-earth ions, which require multiple steps of pH adjustments and repeated separation, the three-liquid-phase approach exhibits obvious advantages for future industrial application.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ie4002553
Indexed BySCI
Language英语
WOS KeywordSOLVENT-EXTRACTION ; 2-PHASE SYSTEMS ; 3-LIQUID-PHASE EXTRACTION ; METAL-IONS ; EXCHANGE-REACTIONS ; CD(II) EXTRACTION ; BEHAVIOR ; WATER ; ACID ; SALT
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000318468600018
Citation statistics
Cited Times:30[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13326
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, State Key Lab Biochem Engn, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Sui, Na,Huang, Kun,Zhang, Chao,et al. Light, Middle, and Heavy Rare-Earth Group Separation: A New Approach via a Liquid-Liquid-Liquid Three-Phase System[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2013,52(17):5997-6008.
APA Sui, Na,Huang, Kun,Zhang, Chao,Wang, Ning,Wang, Fuchun,&Liu, Huizhou.(2013).Light, Middle, and Heavy Rare-Earth Group Separation: A New Approach via a Liquid-Liquid-Liquid Three-Phase System.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,52(17),5997-6008.
MLA Sui, Na,et al."Light, Middle, and Heavy Rare-Earth Group Separation: A New Approach via a Liquid-Liquid-Liquid Three-Phase System".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 52.17(2013):5997-6008.
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