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Three-Liquid-Phase Extraction and Separation of Ti(IV), Fe(III), and Mg(II)
Alternative TitleInd. Eng. Chem. Res.
Xie, Keng1,2,3; Huang, Kun1; Xu, Lin1,2,3; Yu, Pinhua1,2,3; Yang, Liangrong1; Liu, Huizhou1
2011-05-18
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume50Issue:10Pages:6362-6368
AbstractThree-liquid-phase extraction has been considered to be a promising method for isolation and separation of multicomponents. Selective extraction-separation of Ti(IV), Fe(III), and Mg(II) in the three-liquid-phase system containing trialkylphosphine oxide (TRPO), poly(ethylene glycol) with an average molecular mass of 2000 (PEG 2000), and (NH(4))(2)SO(4) was achieved by adding a water-soluble complexing agent, ethylenediaminetetraacetic acid (EDTA). The simple and environmentally benign complexing method was proved to be an effective strategy for enhancing the selectivity of the PEG-2000-rich middle phase for Fe(III) without reducing the affinity of the TRPO-rich top phase to Ti(IV). The related chemistry was detailed, and effects of some important parameters such as the aqueous phase pH, EDTA amount, mixing time, and temperature were examined. It revealed that Ti(IV) and Fe(III) could be enriched respectively into the TRPO-rich top phase and the PEG-2000-rich middle phase through optimization of the aqueous pH and the EDTA amount. Ti(IV) was extracted into the top phase with a slow kinetics and a positive enthalpy change (Delta H), whereas Fe(III) was rapidly transferred to the middle phase as Fe(III) EDTA complexes formed by an exothermic reaction. Mg(II) tended to remain in the bottom phase.; Three-liquid-phase extraction has been considered to be a promising method for isolation and separation of multicomponents. Selective extraction-separation of Ti(IV), Fe(III), and Mg(II) in the three-liquid-phase system containing trialkylphosphine oxide (TRPO), poly(ethylene glycol) with an average molecular mass of 2000 (PEG 2000), and (NH(4))(2)SO(4) was achieved by adding a water-soluble complexing agent, ethylenediaminetetraacetic acid (EDTA). The simple and environmentally benign complexing method was proved to be an effective strategy for enhancing the selectivity of the PEG-2000-rich middle phase for Fe(III) without reducing the affinity of the TRPO-rich top phase to Ti(IV). The related chemistry was detailed, and effects of some important parameters such as the aqueous phase pH, EDTA amount, mixing time, and temperature were examined. It revealed that Ti(IV) and Fe(III) could be enriched respectively into the TRPO-rich top phase and the PEG-2000-rich middle phase through optimization of the aqueous pH and the EDTA amount. Ti(IV) was extracted into the top phase with a slow kinetics and a positive enthalpy change (Delta H), whereas Fe(III) was rapidly transferred to the middle phase as Fe(III) EDTA complexes formed by an exothermic reaction. Mg(II) tended to remain in the bottom phase.
KeywordAqueous Biphasic Systems Liquid-liquid-extraction Solvent-extraction Metal-ions Titaniferous Magnetites Partitioning Behavior 2-phase Systems Leach Liquors Titanium Thermodynamics
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ie1022354
URL查看原文
Indexed BySCI
Language英语
WOS KeywordAQUEOUS BIPHASIC SYSTEMS ; LIQUID-LIQUID-EXTRACTION ; SOLVENT-EXTRACTION ; METAL-IONS ; TITANIFEROUS MAGNETITES ; PARTITIONING BEHAVIOR ; 2-PHASE SYSTEMS ; LEACH LIQUORS ; TITANIUM ; THERMODYNAMICS
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000290373200050
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6511
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xie, Keng,Huang, Kun,Xu, Lin,et al. Three-Liquid-Phase Extraction and Separation of Ti(IV), Fe(III), and Mg(II)[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2011,50(10):6362-6368.
APA Xie, Keng,Huang, Kun,Xu, Lin,Yu, Pinhua,Yang, Liangrong,&Liu, Huizhou.(2011).Three-Liquid-Phase Extraction and Separation of Ti(IV), Fe(III), and Mg(II).INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,50(10),6362-6368.
MLA Xie, Keng,et al."Three-Liquid-Phase Extraction and Separation of Ti(IV), Fe(III), and Mg(II)".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 50.10(2011):6362-6368.
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