The electrowinning of vanadium oxide from alkaline solution
Liu, Biao; Zheng, Shili; Wang, Shaona; Zhang, Yi; Du, Hao
2016-10-01
发表期刊HYDROMETALLURGY
ISSN0304-386X
卷号165期号:OCT页码:244-250
摘要

Roasting-leaching-precipitation-calcinations is the conventional way for manufacturing vanadium oxide. Due to the mixing of sodium and ammonium salts in the ammonium precipitation process, a large amount of high concentration ammonia-nitrogen wastewater is produced. In this work, a novel preparation method of low-valent vanadium oxide has been proposed. Using the intermediate product of sodium metavanadate as material, low-valent vanadium oxide was one-step prepared by electroreduction. The sodium hydroxide was meanwhile formed and could be recycled back to the roasting circuit. Current density, temperature, vanadium concentration and alkali concentration were varied to evaluate current efficiency and energy consumption. A maximum current efficiency of 33.5% and a minimum energy consumption of 2700 kWh were obtained under the optimized conditions of temperature 60 degrees C, vanadium concentration 0.2 M, alkali concentration 0.25 M and current density 267 A/m(2). It is a cleaner production method to prepare low-valent vanadium oxide, showing good prospects. (C) 2016 Elsevier B.V. All rights reserved.

关键词Vanadium Oxide Electrowinning Alkali Recycle Cleaner Production
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.hydromet.2016.02.012
收录类别SCI ; ISTP
语种英语
关键词[WOS]ABSORPTION
WOS研究方向Metallurgy & Metallurgical Engineering
WOS类目Metallurgy & Metallurgical Engineering
WOS记录号WOS:000383522100005
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21337
专题湿法冶金清洁生产技术国家工程实验室
作者单位Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Liu, Biao,Zheng, Shili,Wang, Shaona,et al. The electrowinning of vanadium oxide from alkaline solution[J]. HYDROMETALLURGY,2016,165(OCT):244-250.
APA Liu, Biao,Zheng, Shili,Wang, Shaona,Zhang, Yi,&Du, Hao.(2016).The electrowinning of vanadium oxide from alkaline solution.HYDROMETALLURGY,165(OCT),244-250.
MLA Liu, Biao,et al."The electrowinning of vanadium oxide from alkaline solution".HYDROMETALLURGY 165.OCT(2016):244-250.
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