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Cleaner production of vanadium oxides by cation-exchange membrane-assisted electrolysis of sodium vanadate solution
Pan, Bo1,2,3; Jin, Wei2; Liu, Biao2; Zheng, Shili2; Wang, Shaona2; Du, Hao2,4; Zhang, Yi1,2
2017-05-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume169Pages:440-446
Abstract

We herein report the development of a membrane-assisted electrochemical method for separating sodium and vanadium from a sodium orthovanadate solution. During the employed electrolysis process, Na+ ions in the anode chamber pass through the cation-exchange membrane and combine with OH- ions in the cathode chamber to produce a concentrated NaOH solution, resulting in lowering of the pH in the anode chamber from 13.7 to 1.81. This reaction results in the precipitation of 92.60%-pure vanadium oxide. The effects of the electrolysis time, current density, solution temperature, and initial NaOH concentration in the cathode chamber on the process were investigated. It was found that increases in the current density and solution temperature decreased the initial NaOH concentration in the cathode chamber and enhanced sodium and vanadium separation. Using a current density of 600 A/m(2) and a solution temperature of 338 K, 3641 kW.h of energy was consumed to produce 1 t of NaOH and 0.75 t of V2O5 over an electrolysis time of 7 h. (C) 2017 Elsevier B.V. All rights reserved.

KeywordCation-exchange Membrane Electrolysis Sodium Vanadium Separation Vanadium Oxide Naoh Recovery
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.hydromet.2017.03.010
Indexed BySCI
Language英语
WOS KeywordSlag ; Extraction
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Basic Research Program of China (973 Program)(2013CB632605) ; Program of National Natural Science Foundation of China(51404227 ; 51604254 ; 51604253)
WOS IDWOS:000401878200053
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22632
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Tianjin Univ, Sch Chem Engn, Tianjin 300072, Peoples R China
2.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
3.Natl Engn Res Ctr Distillat Technol, Tianjin 300072, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Pan, Bo,Jin, Wei,Liu, Biao,et al. Cleaner production of vanadium oxides by cation-exchange membrane-assisted electrolysis of sodium vanadate solution[J]. HYDROMETALLURGY,2017,169:440-446.
APA Pan, Bo.,Jin, Wei.,Liu, Biao.,Zheng, Shili.,Wang, Shaona.,...&Zhang, Yi.(2017).Cleaner production of vanadium oxides by cation-exchange membrane-assisted electrolysis of sodium vanadate solution.HYDROMETALLURGY,169,440-446.
MLA Pan, Bo,et al."Cleaner production of vanadium oxides by cation-exchange membrane-assisted electrolysis of sodium vanadate solution".HYDROMETALLURGY 169(2017):440-446.
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