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Investigation of the sulfur speciation during chalcopyrite leaching by moderate thermophile Sulfobacillus thermosulfidooxidans
Xia, JL; Yang, Y; He, H; Liang, CL; Zhao, XJ; Zheng, L; Ma, CY; Zhao, YD; Nie, ZY; Qiu, GZ; Zheng L(郑雷); Ma CY(马陈燕); Zhao YD(赵屹东)
2010
Source PublicationINTERNATIONAL JOURNAL OF MINERAL PROCESSING
Volume94Issue:1-2Pages:#REF!
Corresponding AuthorXia, JL (reprint author), Cent S Univ, Sch Minerals Proc & Bioengn, Key Lab Biomet, Minist Educ China, Changsha 410083, Peoples R China.
SubtypeArticle
AbstractThe surface sulfur speciation of chalcopyrite leached by moderately thermophilic Sulfobacillus thermosulfidooxidans was investigated by employing scanning electron microscopy (SEIM), X-ray diffraction (XRD) and sulfur K-edge X-ray absorption near edge structure spectroscopy (XANES), accompanying with the leaching behavior elucidation. Leaching experiment showed that there was an optimum range of the redox potential for chalcopyrite dissolution. Leaching products were found accumulating during the leaching process, which might be jarosite according to the XRD analysis. The sulfur K-edge spectra indicated that chalcocite might be the intermediate sulfur compound under a critical redox potential, which might explain the existence of optimum range of the redox potential and provide an evidence for the two-step leaching model of chalcopyrite at low Eh. In addition, the results of sulfur K-edge spectra showed jarosite would accumulate on mineral surface, which might be the main component of the passivation layer. (C) 2009 Elsevier B.V. All rights reserved.
KeywordSulfur speciation Bioleaching Chalcopyrite Sulfobacillus thermosulfidooxidans XANES
Subject AreaEngineering; Mineralogy; Mining & Mineral Processing
DOI10.1016/j.minpro.2009.11.005
Indexed BySCI
WOS SubjectEngineering, Chemical ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000275258600007
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/225771
Collection多学科研究中心
Recommended Citation
GB/T 7714
Xia, JL,Yang, Y,He, H,et al. Investigation of the sulfur speciation during chalcopyrite leaching by moderate thermophile Sulfobacillus thermosulfidooxidans[J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING,2010,94(1-2):#REF!.
APA Xia, JL.,Yang, Y.,He, H.,Liang, CL.,Zhao, XJ.,...&赵屹东.(2010).Investigation of the sulfur speciation during chalcopyrite leaching by moderate thermophile Sulfobacillus thermosulfidooxidans.INTERNATIONAL JOURNAL OF MINERAL PROCESSING,94(1-2),#REF!.
MLA Xia, JL,et al."Investigation of the sulfur speciation during chalcopyrite leaching by moderate thermophile Sulfobacillus thermosulfidooxidans".INTERNATIONAL JOURNAL OF MINERAL PROCESSING 94.1-2(2010):#REF!.
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