Electrochemical Behavior of Ocean Polymetallic Nodules and Low-Grade Nickel Sulfide Ore in Acidithiobacillus Ferrooxidans-Coupled Bio-Leaching
文献类型：期刊论文
| 作者 | Kang, Jin-Xing1; Feng, Ya-Li1; Li, Hao-Ran2; Du, Zhu-Wei2; Deng, Xiang-Yi1; Wang, Hong-Jun1 |
| 刊名 | MINERALS
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 9期号:2页码:20 |
| ISSN号 | 2075-163X |
| 关键词 | coupled bio-leaching electrochemistry behavior Acidithiobacillus ferrooxidans polymetallic nodules low-grade nickel sulfide ore |
| DOI | 10.3390/min9020070 |
| 英文摘要 | Efficient extraction of Ni, Co, Cu, and Mn from low-grade and refractory ores is a common technical challenge. The present study proposes an Acidithiobacillus ferrooxidans-coupled leaching of Ni, Cu, Co, and Mn from oceanic polymetallic nodules and low-grade nickel sulfide ore, and focuses on the electrochemical behavior of the ores in simulated bio-leaching solutions. In the dissolution of polymetallic nodules, A. ferrooxidans facilitates the diffusion of H+ and accelerates electron transfer, producing a decrease in charge transfer resistance and promoting the Mn(IV)-preceding reaction. The use of A. ferrooxidans is beneficial for lower impedance of sulfur-nickel ore, faster diffusion rate of product layer, and better transformation of the Fe3+/Fe2+ couple and S-0/S2- couple. A. ferrooxidans increases the potential difference between the nodule cathode and sulfide anode, and increases electron liberation from the sulfide ore. This motivates a significant increase in the average extraction rates of Ni, Co, Cu, and Mn in the bacterial solution. The bio-leaching efficiencies of Ni, Co, Cu, and Mn were as high as 95.4%, 97.8%, 92.2% and 97.3%, respectively, representing improvements of 17.1%, 11.5%, 14.3% and 12.9% relative to that of the germ- and Fe(III)-free acidic 9 K basic system. |
| WOS关键词 | MANGANESE ; MECHANISM ; PYROLUSITE ; METALS ; PYRITE ; BIOOXIDATION ; DISSOLUTION ; PYRRHOTITE ; OXIDATION ; MINERALS |
| 资助项目 | Major Science and Technology Program for Water Pollution Control and Treatment[DY135-B2-15] ; National Natural Science Foundation of China[2015ZX07205-003] ; [21176026] ; [21176242] |
| WOS研究方向 | Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000460799000004 |
| 资助机构 | Major Science and Technology Program for Water Pollution Control and Treatment ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28345]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Feng, Ya-Li; Li, Hao-Ran |
| 作者单位 | 1.Univ Sci & Technol, 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 |
| 推荐引用方式 GB/T 7714 | Kang, Jin-Xing,Feng, Ya-Li,Li, Hao-Ran,et al. Electrochemical Behavior of Ocean Polymetallic Nodules and Low-Grade Nickel Sulfide Ore in Acidithiobacillus Ferrooxidans-Coupled Bio-Leaching[J]. MINERALS,2019,9(2):20. |
| APA | Kang, Jin-Xing,Feng, Ya-Li,Li, Hao-Ran,Du, Zhu-Wei,Deng, Xiang-Yi,&Wang, Hong-Jun.(2019).Electrochemical Behavior of Ocean Polymetallic Nodules and Low-Grade Nickel Sulfide Ore in Acidithiobacillus Ferrooxidans-Coupled Bio-Leaching.MINERALS,9(2),20. |
| MLA | Kang, Jin-Xing,et al."Electrochemical Behavior of Ocean Polymetallic Nodules and Low-Grade Nickel Sulfide Ore in Acidithiobacillus Ferrooxidans-Coupled Bio-Leaching".MINERALS 9.2(2019):20. |
入库方式： OAI收割
来源：过程工程研究所
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