| Synchrotron Radiation Based Study of the Catalytic Mechanism of Ag+ to Chalcopyrite Bioleaching by Mesophilic and Thermophilic Cultures | |
Nie, Zhenyuan, Zhang, Weiwei, Liu, Hongchang, Xia, Jinlan, Zhu, Wei, Zhang, Duorui, Zheng, Lei, Ma, Chenyan, Zhao, Yidong; Wen, Wen; Zheng L(郑雷) ; Ma CY(马陈燕); Zhao YD(赵屹东)
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| 2018 | |
| Source Publication | MINERALS
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| ISSN | 2075-163X |
| Volume | 8Issue:9Pages:382 |
| Subtype | Article |
| Abstract | The catalytic mechanism of Ag+ for chalcopyrite bioleaching by mesophilic culture (at 30 degrees C) and thermophilic culture (at 48 degrees C) was investigated using synchrotron radiation-based X-ray diffraction (SR-XRD) and S K-edge and Fe L-edge X-ray absorption near edge structure (XANES) spectroscopy. Bioleaching experiments showed that copper extraction from chalcopyrite bioleaching by both cultures was promoted significantly by Ag+, with more serious corrosion occurring on the minerals surface. SR-XRD and XANES analyses showed that the intermediates S-0, jarosite and secondary minerals (bornite, chalcocite and covellite) formed for all bioleaching experiments. For these secondary minerals, the formation of bornite and covellite was promoted significantly in the presence of Ag+ for both cultures, while Ag+ has almost no effect on the formation of chalcocite. These results provided insight into the catalytic mechanisms of Ag+ to chalcopyrite bioleaching by the mesophilic and thermophilic cultures, which are both probably due to the rapid formation of bornite by Ag+ and the conversion of bornite to covellite. |
| Keyword | chalcopyrite bioleaching Ag+ mesophilic culture thermophilic culture SR-XRD XANES |
| DOI | 10.3390/min8090382 |
| WOS Keyword | ELECTROCHEMICAL DISSOLUTION ; SILVER IONS ; SPECIATION ; SPECTROSCOPY ; EVOLUTION ; OXIDATION ; MINERALS ; EMPHASIS ; KINETICS ; BORNITE |
| Indexed By | SCI ; ADS |
| Language | 英语 |
| WOS Research Area | Mineralogy ; Mining & Mineral Processing |
| WOS Subject | Mineralogy ; Mining & Mineral Processing |
| WOS ID | WOS:000447939100022 |
| ADS Bibcode | 2018Mine....8..382N |
| ADS URL | https://ui.adsabs.harvard.edu/abs/2018Mine....8..382N |
| ADS CITATIONS | https://ui.adsabs.harvard.edu/abs/2018Mine....8..382N/citations |
| Citation statistics |
Cited Times:1 [ADS]
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| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/286723 |
| Collection | 多学科研究中心 |
| Affiliation | 中国科学院高能物理研究所 |
| First Author Affilication | Institute of High Energy |
| Recommended Citation GB/T 7714 | Nie, Zhenyuan, Zhang, Weiwei, Liu, Hongchang, Xia, Jinlan, Zhu, Wei, Zhang, Duorui, Zheng, Lei, Ma, Chenyan, Zhao, Yidong,Wen, Wen,Zheng L,et al. Synchrotron Radiation Based Study of the Catalytic Mechanism of Ag+ to Chalcopyrite Bioleaching by Mesophilic and Thermophilic Cultures[J]. MINERALS,2018,8(9):382. |
| APA | Nie, Zhenyuan, Zhang, Weiwei, Liu, Hongchang, Xia, Jinlan, Zhu, Wei, Zhang, Duorui, Zheng, Lei, Ma, Chenyan, Zhao, Yidong,Wen, Wen,郑雷,马陈燕,&赵屹东.(2018).Synchrotron Radiation Based Study of the Catalytic Mechanism of Ag+ to Chalcopyrite Bioleaching by Mesophilic and Thermophilic Cultures.MINERALS,8(9),382. |
| MLA | Nie, Zhenyuan, Zhang, Weiwei, Liu, Hongchang, Xia, Jinlan, Zhu, Wei, Zhang, Duorui, Zheng, Lei, Ma, Chenyan, Zhao, Yidong,et al."Synchrotron Radiation Based Study of the Catalytic Mechanism of Ag+ to Chalcopyrite Bioleaching by Mesophilic and Thermophilic Cultures".MINERALS 8.9(2018):382. |
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