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Formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis
Alternative Title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
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); Zhao YD(赵屹东)
2016
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
EISSN2210-3384
Volume26Issue:9Pages:2485-2494
SubtypeArticle
AbstractThe 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).
Keywordbioleaching chalcopyrite Acidianus manzaensis secondary minerals formation evolution
DOI10.1016/S1003-6326(16)64369-8
WOS KeywordSULFURIC-ACID-SOLUTION ; K-EDGE XANES ; THIOBACILLUS-FERROOXIDANS ; ACIDITHIOBACILLUS-FERROOXIDANS ; HINDERED DISSOLUTION ; SURFACE-CHEMISTRY ; SPECIATION ; PROGRESS ; LAYERS ; THERMOPHILES
Indexed BySCI
Language英语
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000386345500026
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/260361
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
Recommended Citation
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.
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