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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; Ma CY(马陈燕); Zheng L(郑雷); Zhao YD(赵屹东)
2017
Source PublicationMINERALS ENGINEERING
ISSN0892-6875
Volume106Pages:22-32
SubtypeArticle; Proceedings Paper
AbstractThe 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.
Conference TitleBiohydromet Conference
Conference PlaceFalmouth, ENGLAND
Conference DateJUN, 2016
KeywordBioleaching Mixed culture Chalcopyrite Chemical speciation Intermediates
DOI10.1016/j.mineng.2017.01.013
WOS KeywordEXTRACELLULAR THIOL-GROUPS ; SULFURIC-ACID-SOLUTION ; ACIDITHIOBACILLUS-FERROOXIDANS ; ACIDIANUS-MANZAENSIS ; SULFOBACILLUS-THERMOSULFIDOOXIDANS ; ELECTROCHEMICAL DISSOLUTION ; DIFFERENTIAL UTILIZATION ; HINDERED DISSOLUTION ; SURFACE-LAYERS ; MU-S
Indexed BySCI ; EI ; CPCI ; SCOPUS
Language英语
WOS Research AreaEngineering ; Mineralogy ; Mining & Mineral Processing
WOS SubjectEngineering, Chemical ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000399518800006
EI Accession Number20170703354322
EI KeywordsChemical speciation - Copper compounds - Dissolution - Redox reactions - Sulfide minerals - Synchrotron radiation - X ray absorption - X ray absorption near edge structure spectroscopy - X ray diffraction
EI Classification Number461.8 Biotechnology - 482.2 Minerals - 711 Electromagnetic Waves - 802.2 Chemical Reactions - 802.3 Chemical Operations - 931.3 Atomic and Molecular Physics - 932.1.1 Particle Accelerators
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Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285194
Collection多学科研究中心
加速器中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
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.,...&赵屹东.(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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