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Sulfur speciation transformation during bioleaching of pyrite-containing sphalerite concentrate by thermophile Sulfolobus metallicus at 65 A degrees C
Xia, JL; Zhao, XJ; Liang, CL; Yang, Y; Nie, ZY; Tang, L; Ma, CY; Zheng, L; Zhao, YD; Qiu, GZ; Ma CY(马陈燕); Zheng L(郑雷); Zhao YD(赵屹东)
2012
发表期刊JOURNAL OF CENTRAL SOUTH UNIVERSITY
卷号19期号:7页码:1961-1966
摘要Sulfur speciation transformation during bioleaching of pyrite-containing sphalerite concentrate by thermophile Sulfolobus metallicus (S. metallicus) at 65 A degrees C was investigated by X-ray diffraction (XRD), diffuse reflectance Fourier transform infrared spectroscopy (FT-IR) and sulfur K-edge X-ray absorption near edge structure spectroscopy (XANES). The results show that the presence of S. metallicus effectively enhances the dissolution of the mineral. The yield of zinc increases from 0.5 g/L in sterile control to 2.7 g/L in bioleaching. The pyrite in the concentrate facilitates zinc dissolution in the early stage, but has hindrance role in the late stage for the formation of jarosite. Sulfur speciation analyses show that jarosite and elemental sulfur are main products in bioleaching process, and the accumulation of jarosite is mainly responsible for the decline of leaching efficiency.
关键词sphalerite bioleaching Sulfolobus metallicus sulfur K-edge X-ray absorption near edge spectroscopy (XANES) sulfur speciation transformation
学科领域Metallurgy & Metallurgical Engineering
DOI10.1007/s11771-012-1232-x
收录类别SCI
WOS记录号WOS:000305957100027
引用统计
被引频次:4[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/311005/224179
专题多学科研究中心
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Xia, JL,Zhao, XJ,Liang, CL,et al. Sulfur speciation transformation during bioleaching of pyrite-containing sphalerite concentrate by thermophile Sulfolobus metallicus at 65 A degrees C[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2012,19(7):1961-1966.
APA Xia, JL.,Zhao, XJ.,Liang, CL.,Yang, Y.,Nie, ZY.,...&赵屹东.(2012).Sulfur speciation transformation during bioleaching of pyrite-containing sphalerite concentrate by thermophile Sulfolobus metallicus at 65 A degrees C.JOURNAL OF CENTRAL SOUTH UNIVERSITY,19(7),1961-1966.
MLA Xia, JL,et al."Sulfur speciation transformation during bioleaching of pyrite-containing sphalerite concentrate by thermophile Sulfolobus metallicus at 65 A degrees C".JOURNAL OF CENTRAL SOUTH UNIVERSITY 19.7(2012):1961-1966.
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