Comparative study of S, Fe and Cu speciation transformation during. chalcopyrite bioleaching by mixed mesophiles and mixed thermophiles

被引：36

作者：

Liu, Hong-chang ^{[1
,4
]}

Xia, Jin-lan ^{[1
,2
]}

Nie, Zhen-yuan ^{[1
,2
]}

Liu, Li-zhu ^{[1
]}

Wang, Lei ^{[1
]}

Ma, Chen-yan ^{[3
]}

Zheng, Lei ^{[3
]}

Zhao, Yi-dong ^{[3
]}

Wen, Wen ^{[5
]}

机构：

[1] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China

[2] Cent S Univ, Key Lab Biomet, Minist Educ China, Changsha 410083, Hunan, Peoples R China

[3] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 10049, Peoples R China

[4] Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China

[5] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

来源：

MINERALS ENGINEERING | 2017年 / 106卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Bioleaching; Mixed culture; Chalcopyrite; Chemical speciation; Intermediates; EXTRACELLULAR THIOL-GROUPS; ACIDIANUS-MANZAENSIS; SULFOBACILLUS-THERMOSULFIDOOXIDANS; ELECTROCHEMICAL DISSOLUTION; DIFFERENTIAL UTILIZATION; SULFUR SPECIATION; SURFACE-LAYERS; MU-S; ACIDITHIOBACILLUS; BORNITE;

D O I：

10.1016/j.mineng.2017.01.013

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The 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.

引用

页码：22 / 32

页数：11

共 49 条

[1] Kinetics of chalcopyrite dissolution at pH 3 [J].

Acero, Patricia ;

Cama, Jordi ;

Ayora, Carlos .

EUROPEAN JOURNAL OF MINERALOGY, 2007, 19 (02) :173-182

[2] A comparative study of electrochemical behavior of chalcopyrite, chalcocite and bornite in sulfuric acid solution [J].

Arce, EA ;

González, I .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2002, 67 (1-4) :17-28

[3] Biohydrometallurgical prospects [J].

Brierley, C. L. .

HYDROMETALLURGY, 2010, 104 (3-4) :324-328

[4] How do bacteria interact with minerals? [J].

Crundwell, FK .

HYDROMETALLURGY, 2003, 71 (1-2) :75-81

[5] Jarosite-type precipitates mediated by YN22, Sulfobacillus thermosulfidooxidans, and their influences on strain [J].

Ding Jian-Nan ;

Gao Jian ;

Wu Xue-Ling ;

Zhang Cheng-Gui ;

Wang Dian-Zuo ;

Qiu Guan-Zhou .

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2007, 17 (05) :1038-1044

[6]

Du PlessisC.A., 2007, Biomining, P57, DOI [10.1007/978-3-540-34911-2_3, DOI 10.1007/978-3-540-34911-2_3]

[7] Iron-Oxidizing Bacteria: An Environmental and Genomic Perspective [J].

Emerson, David ;

Fleming, Emily J. ;

McBeth, Joyce M. .

ANNUAL REVIEW OF MICROBIOLOGY, VOL 64, 2010, 2010, 64 :561-583

[8] Surface science done at third generation synchrotron radiation facilities [J].

Ferrer, S ;

Petroff, Y .

SURFACE SCIENCE, 2002, 500 (1-3) :605-627

[9] Electrochemical evaluation of the surface of chalcopyrite during dissolution in sulfuric acid solution [J].

Ghahremaninzhad, A. ;

Asselin, E. ;

Dixon, D. G. .

ELECTROCHIMICA ACTA, 2010, 55 (18) :5041-5056

[10] The evolution of surface layers formed during chalcopyrite leaching [J].

Harmer, Sarah L. ;

Thomas, Joan E. ;

Fornasiero, Daniel ;

Gerson, Andrea R. .

GEOCHIMICA ET COSMOCHIMICA ACTA, 2006, 70 (17) :4392-4402

← 1 2 3 4 5 →