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
发表期刊METALS
ISSN2075-4701
卷号7期号:3
摘要The 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.
关键词Highly Pure Vanadyl Sulfate Vanadium-bearing Titanomagnetite Solvent Extraction Ehehpa Impurities Removal
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.3390/met7030106
收录类别SCI
语种英语
关键词[WOS]REDOX FLOW BATTERY ; SYNERGISTIC EXTRACTION ; VANADIUM(V) ; SEPARATION ; RECOVERY ; D2EHPA ; THERMODYNAMICS ; TITANIUM ; LIQUORS ; MIXTURE
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者National Basic Research Program of China (973 Program)(2013CB632604) ; National Nature Science Foundation of China(21506233 ; 21606241 ; 51504230 ; 51402303 ; 51374191)
WOS记录号WOS:000397261600038
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22105
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.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
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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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