Succession of acidophilic bacterial community during bio-oxidation of refractory gold-containing sulfides
文献类型：期刊论文
| 作者 | Hao, Chunbo1,2; Wang, Lihua1,2; Dong, Hailiang1,3; Zhang, Hongxun4 |
| 刊名 | Geomicrobiology journal
 |
| 出版日期 | 2010 |
| 卷号 | 27期号:8页码:683-691 |
| 关键词 | Acidophiles Bio-oxidation Clone library Dgge Refractory gold ore 16s rrna gene |
| ISSN号 | 0149-0451 |
| DOI | 10.1080/01490450903559989 |
| 通讯作者 | Dong, hailiang(dongh@cugb.edu.cn) |
| 英文摘要 | To optimize the rate of bio-oxidation to recover gold from sulfide minerals, it is important to understand the dynamic change of acidophilic bacteria involved in this process. in this study, a batch bio-oxidation experiment was set up to bioleach au from refractory pyrite and arsenopyrite using a mixed acidophilic culture over the duration of eight days. the 16s rrna gene clone library and denaturing gradient gel electrophoresis approaches (dgge) were used to monitor the dynamic succession of the acidophilic bacterial population. the results showed that there were five bacteria in the bio-oxidation reactor: leptospirillum ferriphilum, acidithiobacillus caldus, sulfobacillus thermotolerans, alicyclobacillus sp. and a heterotrophic iron-oxidizing bacterium. the overall succession pattern was that acidithiobacillus caldus, a sulfur oxidizer, and sulfobacillus thermotolerans, a sulfur-iron oxidizer, were predominant at the beginning of the bio-oxidation process, but they were replaced by iron oxidizer l. ferriphilum at a later stage. the competitive advantage of at. caldus and sb. thermotolerans over l. ferriphilum at the early stage was availability of abundant inorganic sulfur compounds, but lower ph, higher redox potential, and ferrous iron favored l. ferriphilum growth at a later stage. these results have important implications for understanding the role of acidophilic bacterial population in bio-oxidation of refractory gold-containing sulfides. |
| WOS关键词 | SP-NOV ; THIOBACILLUS-CALDUS ; IRON ; MICROORGANISMS ; MINERALS ; RECOVERY ; PYRITE ; LEPTOSPIRILLUM ; BIODIVERSITY ; POPULATION |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000282814300004 |
| 出版者 | TAYLOR & FRANCIS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2412620 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Dong, Hailiang |
| 作者单位 | 1.China Univ Geosci, Geomicrobiol Lab, Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China 2.China Univ Geosci, Sch Water Resources & Environm, Beijing 100083, Peoples R China 3.Miami Univ, Dept Geol, Oxford, OH 45056 USA 4.Chinese Acad Sci, Coll Resources & Environm, Grad Univ, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hao, Chunbo,Wang, Lihua,Dong, Hailiang,et al. Succession of acidophilic bacterial community during bio-oxidation of refractory gold-containing sulfides[J]. Geomicrobiology journal,2010,27(8):683-691. |
| APA | Hao, Chunbo,Wang, Lihua,Dong, Hailiang,&Zhang, Hongxun.(2010).Succession of acidophilic bacterial community during bio-oxidation of refractory gold-containing sulfides.Geomicrobiology journal,27(8),683-691. |
| MLA | Hao, Chunbo,et al."Succession of acidophilic bacterial community during bio-oxidation of refractory gold-containing sulfides".Geomicrobiology journal 27.8(2010):683-691. |
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来源：中国科学院大学
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