title: [Effect of acidic treatment of the chemical composition and bacterial oxidation of arsenic-bearing gold concentrate].
abstract: Effect of acidic pretreatment of arsenic-bearing gold concentrate, a promising gold source, on its chemical composition and efficiency of its bacterial oxidation (BO) was studied. The titer of sulfobacilli during BO of the concentrate after high-temperature acidic treatment was 9.0 x 10(7) cells/ml, the degree of arsenic sulfide oxidation being 71.1%, and in the control, 6.5 x 10(7) cells/ml with the oxidation degree as low as 48.7%. Deeper oxidation of the main gold-containing mineral, arsenic sulfide, would allow more efficient gold recovery from the concentrate.
authors.forename: N V
authors.initials: NV
authors.lastname: Fomchenko
authors.forename: T A
authors.initials: TA
authors.lastname: Pivovarova
authors.forename: T F
authors.initials: TF
authors.lastname: Kondrat'eva
mesh_terms: D001152:Arsenicals / Q000737:chemistry / Q000378:metabolism*; D001419:Bacteria / Q000254:growth & development* / Q000378:metabolism; D006046:Gold / Q000737:chemistry / Q000378:metabolism*; D008906:Mining; D010084:Oxidation-Reduction; D013440:Sulfides / Q000737:chemistry / Q000378:metabolism*
chemical_list: D001152:Arsenicals; D013440:Sulfides; C045816:arsenic trisulfide; D006046:Gold