CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Preparation of Highly Pure Vanadyl Sulfate from Sulfate Solutions Containing Impurities of Iron and Aluminum by Solvent Extraction Using EHEHPA
Li, Dan1,2,3; Chen, Desheng1,2; Zhang, Guozhi1,2,3; Zhao, Hongxin1,2; Qi, Tao1,2; Wang, Weijing1,2; Wang, Lina1,2; Liu, Yahui1,2
2017-03-01
Source PublicationMETALS
ISSN2075-4701
Volume7Issue:3
AbstractThe preparation of highly pure vanadyl sulfate from sulfate solutions containing impurities of iron and aluminumwas investigated by solvent extraction with 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (EHEHPA) and tri-n-butyl phosphate (TBP) as the phase modifier. The extraction and stripping conditions of vanadium (IV) and its separation from iron and aluminum were optimized. Under the optimal extraction conditions, the extraction of vanadium (IV) and iron were 68% and 53%, respectively, while only 2% aluminum was extracted in a single contact, suggesting good separation of vanadium (IV) from aluminum. Sulfuric acid solution was used for the stripping. Nearly 100% vanadium (IV) and 95% aluminum were stripped, while only 10% iron was stripped under the optimal stripping conditions in a single contact, suggesting good separation of vanadium (IV) from iron. After five stages of extraction and stripping, highly pure vanadyl sulfate containing 76.5 g/L V (IV) with the impurities of 12 mg/L Fe and 10 mg/L Al was obtained, which is suitable for the electrolyte of a vanadium redox flow battery. Organic solution was well regenerated after stripping by oxalic acid solution to remove the remaining iron. The mechanism of vanadium (IV) extraction using EHEHPA was also discussed based on the Fourier transform infrared spectroscopy (FT-IR) analysis.
KeywordHighly Pure Vanadyl Sulfate Vanadium-bearing Titanomagnetite Solvent Extraction Ehehpa Impurities Removal
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.3390/met7030106
Indexed BySCI
Language英语
WOS KeywordREDOX FLOW BATTERY ; SYNERGISTIC EXTRACTION ; VANADIUM(V) ; SEPARATION ; RECOVERY ; D2EHPA ; THERMODYNAMICS ; TITANIUM ; LIQUORS ; MIXTURE
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Basic Research Program of China (973 Program)(2013CB632604) ; National Nature Science Foundation of China(21506233 ; 21606241 ; 51504230 ; 51402303 ; 51374191)
WOS IDWOS:000397261600038
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22105
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Chem & Chem Engn Coll, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Dan,Chen, Desheng,Zhang, Guozhi,et al. Preparation of Highly Pure Vanadyl Sulfate from Sulfate Solutions Containing Impurities of Iron and Aluminum by Solvent Extraction Using EHEHPA[J]. METALS,2017,7(3).
APA Li, Dan.,Chen, Desheng.,Zhang, Guozhi.,Zhao, Hongxin.,Qi, Tao.,...&Liu, Yahui.(2017).Preparation of Highly Pure Vanadyl Sulfate from Sulfate Solutions Containing Impurities of Iron and Aluminum by Solvent Extraction Using EHEHPA.METALS,7(3).
MLA Li, Dan,et al."Preparation of Highly Pure Vanadyl Sulfate from Sulfate Solutions Containing Impurities of Iron and Aluminum by Solvent Extraction Using EHEHPA".METALS 7.3(2017).
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