Valence variation of arsenic in bioleaching process of arsenic-bearing gold ore
文献类型：期刊论文
| 作者 | Cui Richeng; Yang Hongying; Chen Sen; Zhang Shuo; Li Kefeng |
| 刊名 | TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
 |
| 出版日期 | 2010 |
| 卷号 | 20期号:6页码:1171-1176 |
| 关键词 | As3+ As5+ bacterial leaching arsenic resistance oxidant arsenic-bearing gold ore |
| ISSN号 | 1003-6326 |
| 其他题名 | Valence variation of arsenic in bioleaching process of arsenic-bearing gold ore |
| 英文摘要 | The concentration and variational trend of As3+ and As5+, the bacterial resistance for the As3+ and As5+ and converting conditions from As3+ to As5+ were analyzed. The additive was used to prompt the bacterial leaching efficiency by changing valence state of arsenic. The results show that the concentration of As3+ is larger than that of As5+ in the lag phase. The concentration of As3+ decreases in the log phase, and is lower than that of As5+. HQ-0211 typed bacteria express better resistance for As3+ and As5+ and remain growing when the concentrations of As3+ and As5+ are above 6.0 g/L and 12.0 g/L, respectively. It is found that Fe3+ cannot oxidize As3+ singly as strong oxidant in the leaching system, but can cooperate with pyrite or chalcopyrite to do that. The oxidation of As3+ is prompted with addition of H2O2. The bacterial activity is improved in favor of bacterial leaching efficiency. NaClO restrains the bacterial growth to depress leaching efficiency because of the chloric compounds affecting bacterial activity. |
| 资助项目 | [National Natural Science Foundation of China] ; [National High-tech Research and Development Program of China] ; [Specialized Research Fund for the Doctoral Program of Higher Education, China] |
| 语种 | 英语 |
| CSCD记录号 | CSCD:3920442 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/153008]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Cui Richeng,Yang Hongying,Chen Sen,et al. Valence variation of arsenic in bioleaching process of arsenic-bearing gold ore[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2010,20(6):1171-1176. |
| APA | Cui Richeng,Yang Hongying,Chen Sen,Zhang Shuo,&Li Kefeng.(2010).Valence variation of arsenic in bioleaching process of arsenic-bearing gold ore.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,20(6),1171-1176. |
| MLA | Cui Richeng,et al."Valence variation of arsenic in bioleaching process of arsenic-bearing gold ore".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 20.6(2010):1171-1176. |
入库方式： OAI收割
来源：金属研究所
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