The chemolithotrophic bacteria Acidithiobacillus ferrooxidans has been exploited world wide for various metallurgical phenomenon. Since these microorganisms thrive well in extreme environmental conditions hence these bacteria show certain tolerance limit to various heavy metal ions. In the current study bioleaching of alumina was carried out from partially laterized khondalite (PLK) using these iron oxidizing bacteria. Various leaching parameters such as pulp density, pH and temperature were studied to evaluate their effects on the leaching efficiency.
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