4518

Investigation the effects of pulp density on the uranium bioleaching in stirred tank reactor

M Eisapour Department of Chemical Engineering - Faculty of Engineering - University of Tehran , M.A Moosavian Department of Chemical Engineering - Faculty of Engineering - University of Tehran , A Keshtkar Nuclear Fuel Cycle School - Nuclear Science and Technology Research Institute, Tehran , A Rashidi Nuclear Fuel Cycle School - Nuclear Science and Technology Research Institute, Tehran

uranium , bioleaching , pulp density , Acidithiobacillus ferrooxidans , stirred tank reactor

2011

The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011

انگليسي

Uranium bioleaching was carried out with low grade uranium ore from anomaly II of Saghand in Yazd. The bacterial which was used for these experiments was the native strain of Acidithiobacillus ferrooxidans. In these experiments, the effect of pulp density on the efficiency of uranium bioleaching was examined. It is observed that increasing the pulp density cause increasing the lag time of bacterial growth and leaching time and in a given time cause lower uranium extraction. In these experiments the uranium extraction percentage reached to 99% after 7 days for 5% (w/v) pulp density at both agitation speeds of 400 (rpm) and 600 (rpm) and 96% and 97% after 8 and 9 days for 15% (w/v) pulp density at agitation speeds of 400 (rpm) and 600 (rpm), respectively.

ايران

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