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Journal of Mining Sciences

2016 year, number 1

Effect of Pseudomonas Japonica Bacteria on Selection of Sulfides

N. K. ALGEBRAISTOVA1, A. V. RAZVYAZNAYA1, M. I. TEREMOVA2, E. V. MAZUROVA3
1Siberian Federal University, pr. Svobodnyi 97, Krasnoyarsk, 660041 Russia
2International Research Center for Extreme Body States, Krasnoyarsk Science Center Siberian Branch, Russian Academy of Sciences, ul. Akademgorodok 50/12, Krasnoyarsk, 660036 Russia
3Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, ul. Akademgorodok 50, Bld. 24, Krasnoyarsk, 660036 Russia
Keywords: cульфиды, халькопирит, молибденит, ксантогенат, микроорганизмы, культуры бактерий, бактериальная обработка, растровая электронная микроскопия, инфракрасная микроскопия, sulfides, chalcopyrite, molybdenite, xanthate, microorganisms, bacteria, bacterial treatment, scanning electron microscopy, infrared microscopy

Abstract

The industrial-level tests prove efficiency of Pseudomonas Japonica bacteria in production of copper-molybdenum bulk concentrate. Using scanning electron microscopy, it is found that adsorption of Pseudomonas Japonica bacteria takes place at the points of xanthate attachment. The infrared spectroscopy analysis shows that after treatment with the bacteria, C-O and C=S bonds vanish while valence and deformation vibrations in СН3- and CH2 groups become less intensive, which may be reflective of desorption of xanthate from the mineral surface.