CAS OpenIR  > 研究所(批量导入)
Enhancing separation of titanium and iron by three-liquid-phase extraction with 1,10-phenanthroline as additive
Alternative TitleJ. Chem. Technol. Biotechnol.
Xie, Keng1,2,3; Huang, Kun1; Yang, Liangrong1; Liu, Huizhou1
2012-07-01
Source PublicationJOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
ISSN0268-2575
Volume87Issue:7Pages:955-960
AbstractBACKGROUND: A three-liquid-phase system (TLPS) composed of an organic solvent-rich top phase, a polymer-rich middle phase and a salt-rich bottom phase is a newly emerging separation medium. Due to low affinity of the polymer-rich phase for metals it is necessary and important to search for a suitable complexing agent that has a definite affinity for the polymer-rich middle phase and a high selectivity for the metal ion of interest. RESULTS: Addition of 1,10-phenanthroline (phen) is effective in enhancing the separation of titanium and iron from magnesium in the TLPS consisting of trialkylphosphine oxide (TRPO)-PEG 2000-(NH4)2SO4. Hydrogen-bonding interactions between PEG 2000 and phen molecules are the driving force for anchoring tri(phen)-iron(II) sulfate complexes in the middle phase. Under the conditions (pH = 1.5, molar ratio of phen to iron(II) = 3.4:1), nearly 86% of titanium was extracted into the top phase while 100% of iron(II) was distributed in the middle phase, without any interference between the metal species. The separation factor of titanium and iron in the upper two phases was greater than 20 000. CONCLUSIONS: A single step of extraction and separation of titanium and iron from magnesium was realized in the TRPO-PEG 2000-(NH4)2SO4 TLPS with phen as additive. It highlights the effectiveness of TLPS in dealing with multi-metal solutions and suggests a potential use of TLPS in the separation of iron and other target metals. As iron is ubiquitous the separation of iron is often needed in both analytical processes and the hydrometallurgical industry. Copyright (c) 2012 Society of Chemical Industry; BACKGROUND: A three-liquid-phase system (TLPS) composed of an organic solvent-rich top phase, a polymer-rich middle phase and a salt-rich bottom phase is a newly emerging separation medium. Due to low affinity of the polymer-rich phase for metals it is necessary and important to search for a suitable complexing agent that has a definite affinity for the polymer-rich middle phase and a high selectivity for the metal ion of interest. RESULTS: Addition of 1,10-phenanthroline (phen) is effective in enhancing the separation of titanium and iron from magnesium in the TLPS consisting of trialkylphosphine oxide (TRPO)-PEG 2000-(NH4)2SO4. Hydrogen-bonding interactions between PEG 2000 and phen molecules are the driving force for anchoring tri(phen)-iron(II) sulfate complexes in the middle phase. Under the conditions (pH = 1.5, molar ratio of phen to iron(II) = 3.4:1), nearly 86% of titanium was extracted into the top phase while 100% of iron(II) was distributed in the middle phase, without any interference between the metal species. The separation factor of titanium and iron in the upper two phases was greater than 20 000. CONCLUSIONS: A single step of extraction and separation of titanium and iron from magnesium was realized in the TRPO-PEG 2000-(NH4)2SO4 TLPS with phen as additive. It highlights the effectiveness of TLPS in dealing with multi-metal solutions and suggests a potential use of TLPS in the separation of iron and other target metals. As iron is ubiquitous the separation of iron is often needed in both analytical processes and the hydrometallurgical industry. Copyright (c) 2012 Society of Chemical Industry
KeywordThree-liquid-phase Extraction 1 10-phenanthroline Separation Of Titanium And Iron From Magnesium Complexation Hydrogen-bonding Interaction
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences ; Technology
DOI10.1002/jctb.3705
URL查看原文
Indexed BySCI
Language英语
WOS KeywordAQUEOUS BIPHASIC SYSTEMS ; PARTITIONING BEHAVIOR ; 2-PHASE SYSTEMS ; WASTE-WATER ; IONS ; FE(III) ; TI(IV) ; CATIONS ; MG(II) ; ACID
WOS Research AreaBiotechnology & Applied Microbiology ; Chemistry ; Engineering
WOS SubjectBiotechnology & Applied Microbiology ; Chemistry, Multidisciplinary ; Engineering, Chemical
WOS IDWOS:000305061200012
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6327
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, State Key Lab Biochem 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,Yang, Liangrong,et al. Enhancing separation of titanium and iron by three-liquid-phase extraction with 1,10-phenanthroline as additive[J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,2012,87(7):955-960.
APA Xie, Keng,Huang, Kun,Yang, Liangrong,&Liu, Huizhou.(2012).Enhancing separation of titanium and iron by three-liquid-phase extraction with 1,10-phenanthroline as additive.JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,87(7),955-960.
MLA Xie, Keng,et al."Enhancing separation of titanium and iron by three-liquid-phase extraction with 1,10-phenanthroline as additive".JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY 87.7(2012):955-960.
Files in This Item:
File Name/Size DocType Version Access License
Enhancing separation(244KB) 限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xie, Keng]'s Articles
[Huang, Kun]'s Articles
[Yang, Liangrong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xie, Keng]'s Articles
[Huang, Kun]'s Articles
[Yang, Liangrong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xie, Keng]'s Articles
[Huang, Kun]'s Articles
[Yang, Liangrong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.