Comparative study of external addition of Fe2+ and inoculum on bioleaching of marmatite flotation concentrate using mesophilic and moderate thermophilic bacteria
文献类型：期刊论文
| 作者 | Wang, Suting1; Zhang, Guangji1; Yuan, Qiuhong1; Fang, Zhaoheng1; Yang, Chao1,2 |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2008-07-01 |
| 卷号 | 93期号:1-2页码:51-56 |
| 关键词 | Acidithiobacillus ferrooxidans marmatite concentrate thermo-acidophilic iron-oxidizing bacteria inoculum |
| ISSN号 | 0304-386X |
| 其他题名 | Hydrometallurgy |
| 中文摘要 | Bioleaching of marmatite flotation concentrate by Acidithiobacillus ferrooxidans and a moderately thermoaciclophilic iron-oxidizing bacterial strain (MLY) was carried out in batch experiments. The effects of external addition of Fe2+ and the inoculum of the bacteria were studied. For A. ferrooxidans, the supplementary addition of Fe2+ as a source of Fe3+ to be generated by the bacteria was necessary in the starting of the bioleaching of marmatite. While for MLY, it was not necessary because the higher temperature improved the dissolution of marmatite in sulphuric acid, and thus acidic leaching happened before ferric ion leaching. Leaching rate was enhanced with the increased inoculum, however, this influence decreased at a higher level of inoculum. The evolution of the redox potential and the total concentration of iron in the bioleaching indicated that Eh was more important than the concentration of Fe3+ during the dissolution of the marmatite for both strains. Different affinities for the Fe2+ and So substrates led to different trends of leaching rate for the two bacteria. (C) 2008 Elsevier B.V. All rights reserved. |
| 英文摘要 | Bioleaching of marmatite flotation concentrate by Acidithiobacillus ferrooxidans and a moderately thermoaciclophilic iron-oxidizing bacterial strain (MLY) was carried out in batch experiments. The effects of external addition of Fe2+ and the inoculum of the bacteria were studied. For A. ferrooxidans, the supplementary addition of Fe2+ as a source of Fe3+ to be generated by the bacteria was necessary in the starting of the bioleaching of marmatite. While for MLY, it was not necessary because the higher temperature improved the dissolution of marmatite in sulphuric acid, and thus acidic leaching happened before ferric ion leaching. Leaching rate was enhanced with the increased inoculum, however, this influence decreased at a higher level of inoculum. The evolution of the redox potential and the total concentration of iron in the bioleaching indicated that Eh was more important than the concentration of Fe3+ during the dissolution of the marmatite for both strains. Different affinities for the Fe2+ and So substrates led to different trends of leaching rate for the two bacteria. (C) 2008 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | ZINC-SULFIDE CONCENTRATE ; THIOBACILLUS-FERROOXIDANS ; SULFUR ; OXIDATION ; MECHANISM ; MINERALS ; KINETICS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000257354300008 |
| 公开日期 | 2013-10-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/2870]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Suting,Zhang, Guangji,Yuan, Qiuhong,et al. Comparative study of external addition of Fe2+ and inoculum on bioleaching of marmatite flotation concentrate using mesophilic and moderate thermophilic bacteria[J]. HYDROMETALLURGY,2008,93(1-2):51-56. |
| APA | Wang, Suting,Zhang, Guangji,Yuan, Qiuhong,Fang, Zhaoheng,&Yang, Chao.(2008).Comparative study of external addition of Fe2+ and inoculum on bioleaching of marmatite flotation concentrate using mesophilic and moderate thermophilic bacteria.HYDROMETALLURGY,93(1-2),51-56. |
| MLA | Wang, Suting,et al."Comparative study of external addition of Fe2+ and inoculum on bioleaching of marmatite flotation concentrate using mesophilic and moderate thermophilic bacteria".HYDROMETALLURGY 93.1-2(2008):51-56. |
入库方式： OAI收割
来源：过程工程研究所
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