Microbial processing of apatite rich low grade Indian uranium ore in bioreactor

Abhilash, and Pandey, B D (2013) Microbial processing of apatite rich low grade Indian uranium ore in bioreactor. Bioresource Technology, 128 (IF-4.980). pp. 619-623.

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Bioreactor leaching using enriched culture of Acidithiobacillus ferrooxidans and Leptosprillium ferrooxidans was investigated for the apatite rich Indian (Narwapahar) uranium ore. Bioreactor leaching of Narwapahar ore of <45 lm size at pH 2.0 and 10% (w/v) PD using 10% (v/v) inoculum of the bacterium at 35oC (A.ferrooxidans) and 40 C (L. ferrooxidans), solubilised 57% and 63% uranium in 5 days, respectively; the E SCE values being 561 and 588 mV. Leaching kinetics improved so much so that 83% uranium was recovered in just 10 h with 10% inoculum of A. ferrooxidans containing biogenic Fe3+; at 20% PD uranium recovery rose to 87%. Role of temperature (25–40 C) was noticed with 90.3% uranium bioleaching in 10 h at 40oC with L. ferrooxidans as against 77% leaching with A. ferrooxidans at pH 2.0, 40 C and 20% (w/v) PD.

Item Type:Article
Official URL/DOI:http://dx.doi.org/10.1016/j.biortech.2012.10.159
Uncontrolled Keywords:Uranium ores; Low-grade; Apatite; Mine microbes; Bioreactor
Divisions:Metal Extraction and Forming
ID Code:6337
Deposited By:Dr. Abhilash .
Deposited On:28 Jan 2013 10:50
Last Modified:27 Dec 2013 17:55
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