Effect of sodium chloride on sulfur speciation of chalcopyrite bioleached by the extreme thermophile Acidianus manzaensis
Liang, CL; Xia, JL; Nie, ZY; Yang, Y; Ma, CY;马陈燕
刊名BIORESOURCE TECHNOLOGY
2012
卷号110页码:462-467
关键词Sodium chloride Acidianus manzaensis YN25 Chalcopyrite Bioleaching
学科分类Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels
DOI10.1016/j.biortech.2012.01.084
英文摘要The influence of sodium chloride on dissolution of chalcopyrite and surface sulfur speciation during bioleaching of chalcopyrite with the extreme thermophile Acidianus manzaensis YN-25 was studied. The addition of sodium chloride accelerated the dissolution of chalcopyrite by reducing the accumulation of elemental sulfur layers on the mineral surface, resulting in an increase in the concentration of copper ions from 2.37 g/L. to 2.67 g/L. Jarosite and elemental sulfur were found in the bioleached residues, while the amount of elemental sulfur accumulating on the mineral surface decreased drastically from 25.4% to 3.0% when 0.66 g/L of sodium chloride was present during bioleaching. Therefore, the accumulation of elemental sulfur on the mineral surface is likely mainly responsible for the slowdown in the dissolution rate. The results indicated that bioleaching chalcopyrite with extreme thermophiles possessing high sulfur oxidation activity likely enhances dissolution of chalcopyrite by effectively removing elemental sulfur accumulating on the mineral surface. (C) 2012 Elsevier Ltd. All rights reserved.
收录类别SCI
WOS记录号WOS:000305852700066
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被引频次:26[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/223989
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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Liang, CL,Xia, JL,Nie, ZY,et al. Effect of sodium chloride on sulfur speciation of chalcopyrite bioleached by the extreme thermophile Acidianus manzaensis[J]. BIORESOURCE TECHNOLOGY,2012,110:462-467.
APA Liang, CL,Xia, JL,Nie, ZY,Yang, Y,&Ma, CY;马陈燕.(2012).Effect of sodium chloride on sulfur speciation of chalcopyrite bioleached by the extreme thermophile Acidianus manzaensis.BIORESOURCE TECHNOLOGY,110,462-467.
MLA Liang, CL,et al."Effect of sodium chloride on sulfur speciation of chalcopyrite bioleached by the extreme thermophile Acidianus manzaensis".BIORESOURCE TECHNOLOGY 110(2012):462-467.
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