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<strong>Bio-chemical leaching of kaolinite-hematite-boehmite type bauxite ore</strong>

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Title Statement <strong>Bio-chemical leaching of kaolinite-hematite-boehmite type bauxite ore</strong>
 
Added Entry - Uncontrolled Name Gurevich, Yu.L. ; Krasnoyarsk Science Centre, Siberian Branch of Russian Academy of Sciences, RUSSIA
Teremova, M.I. ; Krasnoyarsk Science Centre, Siberian Branch of Russian Academy of Sciences, RUSSIA
Bondarenko, G.N. ; Institute of Chemistry and Chemical Technology, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, RUSSIA
Kislan, S.L. ; Siberian Federal University, Krasnoyarsk, RUSSIA
., Abhilash ; CSIR-NML, Jamshedpur
Russian Academy of Sciences and DST, India
 
Uncontrolled Index Term Bioleaching; Bauxite; Microbial EPS; Specificity; Alumina
 
Summary, etc. Low grade bauxites of Severo-Onezhsky and Sredne-Timansky deposits of Russia have been evaluated for their amenability towards bioleaching. Two microbial isolates of <em>Bacillus</em> 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% SiO<sub>2</sub> and Fe<sub>2</sub>O<sub>3</sub>. 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.
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2016-05-18 14:30:42
 
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http://op.niscair.res.in/index.php/IJCT/article/view/7032
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 22, ##issue.no## 5 (2015): Indian Journal of Chemical Technology
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCT/article/download/7032/18605
http://op.niscair.res.in/index.php/IJCT/article/download/7032/18606