Formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis

doi:10.1016/S1003-6326(16)64369-8

	Formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis
	Liu, HC; Xia, JL; Nie, ZY; Wen, W; Yang, Y; Ma, CY; Zheng, L; Zhao, YD; Ma CY(马陈燕); Zheng L(郑雷)
刊名	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
	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
其他题名	嗜酸热古菌Acidianus manzaensis浸出黄铜矿过程中次生矿物的形成及演变
文献子类	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).
WOS关键词	SULFURIC-ACID-SOLUTION ; K-EDGE XANES ; THIOBACILLUS-FERROOXIDANS ; ACIDITHIOBACILLUS-FERROOXIDANS ; HINDERED DISSOLUTION ; SURFACE-CHEMISTRY ; SPECIATION ; PROGRESS ; LAYERS ; THERMOPHILES
语种	英语
WOS记录号	WOS:000386345500026
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260361]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	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,2016,26(9):2485-2494.
APA	Liu, HC.,Xia, JL.,Nie, ZY.,Wen, W.,Yang, Y.,...&赵屹东.(2016).Formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,26(9),2485-2494.
MLA	Liu, HC,et al."Formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 26.9(2016):2485-2494.