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dc.contributor.authorGurevich, Yu L-
dc.contributor.authorTeremova, M I-
dc.contributor.authorBondarenko, G N-
dc.contributor.authorKislan, S L-
dc.identifier.issn0975-0991 (Online); 0971-457X (Print)-
dc.description.abstractLow grade bauxites of Severo-Onezhsky and Sredne-Timansky deposits of Russia have been evaluated for their amenability towards bioleaching. Two microbial isolates of Bacillus genera have been isolated in Zak medium and enriched to conduct leaching experiments of bauxites. The bacteria are chosen due their specific ability to secrete exo-polysaachrides (EPS), which is believed to be very beneficial in dissolution-cum-flocculation of aluminosilicates. The microbes have been able to leach nearly 50% alumina and nearly 10-35% SiO2 and Fe2O3. Chemical leaching experiments with citric and oxalic acids on bauxite leaching result in a maximum extraction of aluminum to be nearly 39% at elevated concentrations of leaching agents and 2-8 hours residence time. en_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.rights CC Attribution-Noncommercial-No Derivative Works 2.5 Indiaen_US
dc.sourceIJCT Vol.22(5) [September 2015]en_US
dc.subjectMicrobial EPSen_US
dc.titleBio-chemical leaching of kaolinite-hematite-boehmite type bauxite oreen_US
Appears in Collections:IJCT Vol.22(5) [September 2015]

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