Effect of iron transformation on Acidithiobacillus ferrooxidans bio-leaching of clay vanadium residue

doi:10.1007/s11771-019-4049-z

	Effect of iron transformation on Acidithiobacillus ferrooxidans bio-leaching of clay vanadium residue
	Feng, YL; Wang, HJ; Li, HR; Chen, XP; Du, ZW; Kang, JX; Feng Ya-li; Wang Hong-jun; Li Hao-ran; Chen Xi-pei
刊名	JOURNAL OF CENTRAL SOUTH UNIVERSITY
	2019
卷号	26 期号:4 页码:796
关键词	iron ion cycle OXIDATION Acidithiobacillus ferrooxidans CHEMISTRY passivation JAROSITE cyclic valtammetry clay vanadium
ISSN号	2095-2899
DOI	10.1007/s11771-019-4049-z
文献子类	Article
英文摘要	The acid bio-leaching process of vanadium extraction from clay vanadium water-leached residue was studied and the effect of the performance of iron transformation was investigated. Acidithiobacillus ferrooxidans affects the dissolution of vanadium through the catalytic effect on Fe3+/Fe2+ couple and material exchange. The passivation of iron settling correlates with ferrous ion content in bio-leaching solution. In medium containing A. ferrooxidans and Fe(III), the increment in Fe(II) concentration leads to the formation of jarosite, generating a decline in vanadium extraction efficiency. Analysis of cyclic voltammetry shows that Fe(II) ion is apt to be oxidized and translated into precipitate by A. ferrooxidans, which strongly adsorbed to the surface of the residue. Fe(III) ion promotes the vanadium extraction due to its oxidizing activity. Admixing A. ferrooxidans to Fe(III) medium elevates the reduction of low valence state vanadium and facilitates the exchange of substance between minerals and solution. This motivates 3.8% and 21.8% increments in recovery ratio and leaching rate of vanadium compared to the Fe(III) exclusive use, respectively. Moreover, Fe(II) ion impacts vanadium extraction slightly in sterile medium but negatively influences vanadium leaching in the presence of bacteria.
WOS记录号	WOS:000466892300003
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/28258]
专题	中国科学院过程工程研究所
推荐引用方式 GB/T 7714	Feng, YL,Wang, HJ,Li, HR,et al. Effect of iron transformation on Acidithiobacillus ferrooxidans bio-leaching of clay vanadium residue[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2019,26(4):796, 805.
APA	Feng, YL.,Wang, HJ.,Li, HR.,Chen, XP.,Du, ZW.,...&Kang Jin-xing.(2019).Effect of iron transformation on Acidithiobacillus ferrooxidans bio-leaching of clay vanadium residue.JOURNAL OF CENTRAL SOUTH UNIVERSITY,26(4),796.
MLA	Feng, YL,et al."Effect of iron transformation on Acidithiobacillus ferrooxidans bio-leaching of clay vanadium residue".JOURNAL OF CENTRAL SOUTH UNIVERSITY 26.4(2019):796.