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题名:
Formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis
作者: Liu, HC; Xia, JL; Nie, ZY; Wen, W; Yang, Y; Ma, CY; Zheng, L; Zhao, YD
刊名: TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
出版日期: 2016
卷号: 26, 期号:9, 页码:2485-2494
关键词: bioleaching ; chalcopyrite ; Acidianus manzaensis ; secondary minerals ; formation ; evolution
DOI: 10.1016/S1003-6326(16)64369-8
通讯作者: Xia, JL (reprint author), Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China. ; Xia, JL (reprint author), Cent S Univ, Minist Educ, Key Lab Biometallurgy, Changsha 410083, Hunan, Peoples R China.
文章类型: 期刊论文
英文摘要: The formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis were analyzed by combining synchrotron radiation X-ray diffraction (SR-XRD) and S, Fe and Cu K-alpha X-ray absorption near edge structure (XANES) spectroscopy. Leaching experiment showed that 82.4% of Cu2+ was dissolved by A. manzaensis after 10 d. The surface of chalcopyrite was corroded apparently and covered with leaching products. During bioleaching, the formation and evolution of secondary minerals were as follows: 1) little elemental sulfur, jarosite, bornite and chalcocite were found at days 2 and 4; and 2) bornite and chalcocite disappeared, covellite formed, and jarosite gradually became the main component at days 6 and 10. These results indicated that metal-deficiency sulfides chalcocite and bornite were first formed with a low redox potential value (360-461 mV), and then gradually transformed to covellite with a high redox potential value (461-531 mV).
收录类别: SCI
语种: 英语
WOS记录号: WOS:000386345500026
ISSN号: 1003-6326
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26514
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Liu, HC,Xia, JL,Nie, ZY,et al. Formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2016-01-01,26(9):2485-2494.
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