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Volume 25 Issue 3
Mar.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(3): 253-261
Xin Wang, Hai Lin, Ying-bo Dong, and Gan-yu Li, Bioleaching of vanadium from barren stone coal and its effect on the transition of vanadium speciation and mineral phase, Int. J. Miner. Metall. Mater., 25(2018), No. 3, pp. 253-261. https://doi.org/10.1007/s12613-018-1568-9
Cite this article as:
Xin Wang, Hai Lin, Ying-bo Dong, and Gan-yu Li, Bioleaching of vanadium from barren stone coal and its effect on the transition of vanadium speciation and mineral phase, Int. J. Miner. Metall. Mater., 25(2018), No. 3, pp. 253-261. https://doi.org/10.1007/s12613-018-1568-9
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研究论文

Bioleaching of vanadium from barren stone coal and its effect on the transition of vanadium speciation and mineral phase

  • School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China;

  • School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;

  • Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China

  • 通讯作者:

    Hai Lin    E-mail: E-mail: linhai@ces.ustb.edu.cn

  • This study determined the optimal conditions required to obtain maximum vanadium extraction and examined the transition of mineral phases and vanadium speciation during the bioleaching process. Parameters including the initial pH value, initial Fe2+ concentration, solid load, and inoculum quantity were examined. The results revealed that 48.92wt% of the vanadium was extracted through bioleaching under optimal conditions. Comparatively, the chemical leaching yield (H2SO4, pH 2.0) showed a slower and milder increase in vanadium yield. The vanadium bioleaching yield was 35.11wt% greater than the chemical leaching yield. The Community Bureau of Reference (BCR) sequential extraction results revealed that 88.62wt% of vanadium existed in the residual fraction. The bacteria substantially changed the distribution of the vanadium speciation during the leaching process, and the residual fraction decreased to 48.44wt%. The X-ray diffraction (XRD) and Fourier transform infrared (FTIR) results provided evidence that the crystal lattice structure of muscovite was destroyed by the bacteria.
    • Research Article

    Bioleaching of vanadium from barren stone coal and its effect on the transition of vanadium speciation and mineral phase

    + Author Affiliations
      Abstract
    • This study determined the optimal conditions required to obtain maximum vanadium extraction and examined the transition of mineral phases and vanadium speciation during the bioleaching process. Parameters including the initial pH value, initial Fe2+ concentration, solid load, and inoculum quantity were examined. The results revealed that 48.92wt% of the vanadium was extracted through bioleaching under optimal conditions. Comparatively, the chemical leaching yield (H2SO4, pH 2.0) showed a slower and milder increase in vanadium yield. The vanadium bioleaching yield was 35.11wt% greater than the chemical leaching yield. The Community Bureau of Reference (BCR) sequential extraction results revealed that 88.62wt% of vanadium existed in the residual fraction. The bacteria substantially changed the distribution of the vanadium speciation during the leaching process, and the residual fraction decreased to 48.44wt%. The X-ray diffraction (XRD) and Fourier transform infrared (FTIR) results provided evidence that the crystal lattice structure of muscovite was destroyed by the bacteria.
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