Three-Liquid-Phase Extraction and Separation of Ti(IV), Fe(III), and Mg(II)

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	Three-Liquid-Phase Extraction and Separation of Ti(IV), Fe(III), and Mg(II)
	Xie, Keng 1,2,3; Huang, Kun 1; Xu, Lin 1,2,3; Yu, Pinhua 1,2,3; Yang, Liangrong 1; Liu, Huizhou 1
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2011-05-18
卷号	50 期号:10 页码:6362-6368
关键词	aqueous biphasic systems liquid-liquid-extraction solvent-extraction metal-ions titaniferous magnetites partitioning behavior 2-phase systems leach liquors titanium thermodynamics
ISSN号	0888-5885
其他题名	Ind. Eng. Chem. Res.
中文摘要	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.
英文摘要	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.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	AQUEOUS BIPHASIC SYSTEMS ; LIQUID-LIQUID-EXTRACTION ; SOLVENT-EXTRACTION ; METAL-IONS ; TITANIFEROUS MAGNETITES ; PARTITIONING BEHAVIOR ; 2-PHASE SYSTEMS ; LEACH LIQUORS ; TITANIUM ; THERMODYNAMICS
收录类别	SCI
原文出处	://WOS:000290373200050
语种	英语
WOS记录号	WOS:000290373200050
公开日期	2013-11-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/6511]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.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
推荐引用方式 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.