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Relatedness between catalytic effect of activated carbon and passivation phenomenon during chalcopyrite bioleaching by mixed thermophilic Archaea culture at 65 degrees C
Alternative Title混合嗜热古菌在65°C生物浸出黄铜矿过程中活性炭的催化作用和钝化现象的相关性
Ma, YL; Liu, HC; Xia, JL; Nie, ZY; Zhu, HR; Zhao, YD; Ma, CY; Zheng, L; Hong, CH; Wen, W; Zhao YD(赵屹东); Ma CY(马陈燕); Zheng L(郑雷); Hong CH(洪才浩)
2017
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA中国有色金属学报
ISSN1003-6326
EISSN2210-3384
Volume27Issue:6Pages:1374-1384
SubtypeArticle
AbstractThe relatedness between catalytic effect of activated carbon and passivation phenomenon during chalcopyrite bioleaching by mixed thermophilic Archaea culture (Acidianus brierleyi, Metallosphaera sedula, Acidianus manzaensis and Sulfolobus metallicus) at 65 degrees C was studied. Leaching experiments showed that the addition of activated carbon could significantly promote the dissolution of chalcopyrite for both bioleaching and chemical leaching. The results of synchrotron-based X-ray diffraction, iron L-edge and sulfur K-edge X-ray absorption near edge structure spectroscopy indicated that activated carbon could change the transition path of electrons through galvanic interactions to form more readily dissolved secondary mineral chalcocite at a low redox potential (<400 mV) and then enhanced the copper dissolution. Jarosite accumulated immediately in the initial stage of bioleaching with activated carbon but copper dissolution was not hindered. However, much jarosite precipitated on the surface of chalcopyrite in the late stage of bioleaching, which might account for the decrease of copper dissolution rate. More elemental sulfur (S-0) was also detected with additional activated carbon but the mixed thermophilic Archaea culture had a great sulfur oxidation activity, thus S-0 was eliminated and seemed to have no significant influence on the dissolution of chalcopyrite.
Keywordchalcopyrite bioleaching activated carbon passivation phenomenon mixed thermophilic Archaea culture
DOI10.1016/S1003-6326(17)60158-4
WOS KeywordK-EDGE XANES ; ACIDITHIOBACILLUS-FERROOXIDANS ; ACIDIANUS-MANZAENSIS ; SULFUR SPECIATION ; CONCENTRATE ; SPECTROSCOPY ; COPPER
Indexed BySCI ; EI ; SCOPUS ; CSCD
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000406388300017
CSCD IDCSCD:6030727
EI Accession Number20173104013528
EI KeywordsBioleaching - Copper - Copper compounds - Dissolution - Microorganisms - Ore treatment - Passivation - Redox reactions - Sulfur - X ray absorption - X ray absorption near edge structure spectroscopy - X ray diffraction
EI Classification Number461.8 Biotechnology - 461.9 Biology - 533.1 Ore Treatment - 539.2.1 Protection Methods - 544.1 Copper - 711 Electromagnetic Waves - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally - 931.3 Atomic and Molecular Physics
Citation statistics
Cited Times:6[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285243
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
Ma, YL,Liu, HC,Xia, JL,et al. Relatedness between catalytic effect of activated carbon and passivation phenomenon during chalcopyrite bioleaching by mixed thermophilic Archaea culture at 65 degrees C[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA中国有色金属学报,2017,27(6):1374-1384.
APA Ma, YL.,Liu, HC.,Xia, JL.,Nie, ZY.,Zhu, HR.,...&洪才浩.(2017).Relatedness between catalytic effect of activated carbon and passivation phenomenon during chalcopyrite bioleaching by mixed thermophilic Archaea culture at 65 degrees C.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA中国有色金属学报,27(6),1374-1384.
MLA Ma, YL,et al."Relatedness between catalytic effect of activated carbon and passivation phenomenon during chalcopyrite bioleaching by mixed thermophilic Archaea culture at 65 degrees C".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA中国有色金属学报 27.6(2017):1374-1384.
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