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Effects of Acidithiobacillus ferrooxidans and Fe(III) on pyrite-pyrolusite bioleaching process
Feng, Yali1; Kang, Jinxing1; Li, Haoran2; Zhang, Xu1; Deng, Xiangyi1; Sun, Min1; Chen, Xipei1
2017
Source PublicationMETALLURGICAL RESEARCH & TECHNOLOGY
ISSN2271-3646
Volume114Issue:4
Abstract

The beneficial effects of Acidithiobacillus ferrooxidans and/or Fe(III) on manganese bioleaching from a low-grade manganese ore were confirmed. The results showed that the rate of manganese bioleaching increases with the amount of A. ferrooxidans and/or Fe(III). With the presence of Fe(III) and A. ferrooxidans the average initial leaching rate increased from 0.06 to 0.15 g/(L h). Cyclic voltammetry analysis showed that the presence of A. ferrooxidans and/or Fe(III) generate obvious redox potential polarization in the solution. Fe(III) reduced the potential difference between anode and cathode of pyrite and promoted the positive cathodic polarization of pyrolusite at 0.2 V. In the process of pyrite oxidation A. ferrooxidans accelerated the generation and transfer of electron.

KeywordA. ferrooxidA.s Bioleaching Low-grade Pyrolusite Pyrite Cyclic Voltammetry
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1051/metal/2017022
Indexed BySCI
Language英语
WOS KeywordSulfuric-acid ; Manganese Ore ; Extraction ; Oxidation ; Mechanism
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationMajor Science and Technology Program for Water Pollution Control and Treatment(2015ZX07205-003) ; China Ocean Mineral Resource RD Association(DY125-15-T-08) ; National Key Technology R&D Program of China(2012BAB07B05) ; National High Technology Research and Development Program (863 program) of China(2012AA062401)
WOS IDWOS:000408697600002
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23220
Collection生化工程国家重点实验室
Affiliation1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Feng, Yali,Kang, Jinxing,Li, Haoran,et al. Effects of Acidithiobacillus ferrooxidans and Fe(III) on pyrite-pyrolusite bioleaching process[J]. METALLURGICAL RESEARCH & TECHNOLOGY,2017,114(4).
APA Feng, Yali.,Kang, Jinxing.,Li, Haoran.,Zhang, Xu.,Deng, Xiangyi.,...&Chen, Xipei.(2017).Effects of Acidithiobacillus ferrooxidans and Fe(III) on pyrite-pyrolusite bioleaching process.METALLURGICAL RESEARCH & TECHNOLOGY,114(4).
MLA Feng, Yali,et al."Effects of Acidithiobacillus ferrooxidans and Fe(III) on pyrite-pyrolusite bioleaching process".METALLURGICAL RESEARCH & TECHNOLOGY 114.4(2017).
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