title: [Biological oxidation of sulfide raw material using a culture of Thiobacillus ferrooxidans under various conditions of leaching].
abstract: Major parameters of the first stage of leaching of a copper-zinc sulfide product by a culture of Thiobacillus ferrooxidans have been studied, including the effects of solid phase concentration, Fe2+ and Fe3+ ions, pH, and the intensity of mixing. The first stage of leaching of the sulfide raw material is optimum under the following conditions: pH of the original leaching solution equal to 1.6; Fe3+ concentration of order of 10 g/l; and vigorous mixing of the suspension at solid phase concentrations of 30-35%. A theoretical substantiation of the observed dependences is proposed.
authors.affiliation: State Research Institute of Biosynthesis of Protein Substances, Moscow, 109004 Russia.
authors.forename: N V
authors.initials: NV
authors.lastname: Fomchenko
authors.forename: O V
authors.initials: OV
authors.lastname: Slavkina
authors.forename: V V
authors.initials: VV
authors.lastname: Biriukov
mesh_terms: D001673:Biodegradation, Environmental; D003300:Copper / Q000737:chemistry; D005290:Ferric Compounds; D005296:Ferrous Compounds; D006863:Hydrogen-Ion Concentration; D010084:Oxidation-Reduction; D013440:Sulfides / Q000737:chemistry / Q000378:metabolism*; D013855:Thiobacillus / Q000378:metabolism*; D015032:Zinc / Q000737:chemistry
chemical_list: D005290:Ferric Compounds; D005296:Ferrous Compounds; D013440:Sulfides; D003300:Copper; D015032:Zinc