Comparative study of S, Fe and Cu speciation transformation during. chalcopyrite bioleaching by mixed mesophiles and mixed thermophiles

doi:10.1016/j.mineng.2017.01.013

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	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	被引频次：1[WOS] [WOS记录] [WOS相关记录]
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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