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| Comparative study of S, Fe and Cu speciation transformation during. chalcopyrite bioleaching by mixed mesophiles and mixed thermophiles | |
| Liu, HC; Xia, JL; Nie, ZY; Liu, LZ; Wang, L; Ma, CY; Zheng, L; Zhao, YD; Wen, W | |
| 2017 | |
| 发表期刊 | MINERALS ENGINEERING
 |
| ISSN | 0892-6875 |
| 卷号 | 106页码:22-32 |
| 文章类型 | 期刊论文 |
| 摘要 | The bioleaching experiments of chalcopyrite were conducted with mixed mesophilic culture (30 degrees C), moderately thermophilic culture (45 degrees C) and extremely thermophilic culture (65 degrees C), respectively. During bioleaching, the S/Fe/Cu speciation was analyzed by synchrotron radiation (SR) based X-ray diffraction (XRD) and S, Fe and Cu K-edge X-ray absorption near edge structure (XANES) spectroscopy. The results showed that the chalcopyrite dissolution could be significantly promoted by these mixed cultures, and the promotion effects were enhanced with the increase of bioleaching temperature. For all bioleaching tests, the formation of intermediates S, jarosite and secondary minerals (chalcocite, bornite and covellite) was detected, in which the formation of bornite, chalcocite and covellite was just related with redox potential. The formation of bomite could accelerate chalcopyrite dissolution, while the decrease of bioleaching microorganisms could reduce chalcopyrite dissolution. (C) 2017 Elsevier Ltd. All rights reserved. |
| 关键词 | Bioleaching Mixed Culture Chalcopyrite Chemical Speciation Intermediates |
| DOI | 10.1016/j.mineng.2017.01.013 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000399518800006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.sinap.ac.cn/handle/331007/27277 |
| 专题 | 中科院上海应用物理研究所2011-2018年 |
| 推荐引用方式 GB/T 7714 | Liu, HC,Xia, JL,Nie, ZY,et al. Comparative study of S, Fe and Cu speciation transformation during. chalcopyrite bioleaching by mixed mesophiles and mixed thermophiles[J]. MINERALS ENGINEERING,2017,106:22-32. |
| APA | Liu, HC.,Xia, JL.,Nie, ZY.,Liu, LZ.,Wang, L.,...&Wen, W.(2017).Comparative study of S, Fe and Cu speciation transformation during. chalcopyrite bioleaching by mixed mesophiles and mixed thermophiles.MINERALS ENGINEERING,106,22-32. |
| MLA | Liu, HC,et al."Comparative study of S, Fe and Cu speciation transformation during. chalcopyrite bioleaching by mixed mesophiles and mixed thermophiles".MINERALS ENGINEERING 106(2017):22-32. |
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