Kinetics of Microbial Oxidation in Uranium Bioleaching at an Internal Loop Air-Lift Bioreactor
To study microbial oxidation of ferrous ions through the uranium bioleaching process, experiments were carried out in the internal loop air-lift reactor by Acidithiobacillus ferrooxidans. The microbial oxidation kinetics was evaluated with the Monod correlation and modified models for the substrate...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | fas |
| Published: |
Nuclear Science and Technology Research Institute
2014-05-01
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| Series: | مجله علوم و فنون هستهای |
| Subjects: | |
| Online Access: | https://jonsat.nstri.ir/article_5_c1f134a3a45e9c6a3a22b0669efe057f.pdf |
| Summary: | To study microbial oxidation of ferrous ions through the uranium bioleaching process, experiments were carried out in the internal loop air-lift reactor by Acidithiobacillus ferrooxidans. The microbial oxidation kinetics was evaluated with the Monod correlation and modified models for the substrate and product inhibition. The maximum recovery of uranium in the biological and control tests were 97.1% and 21%, respectively. Evaluation of the experimental data with the mentioned models showed that the modified model for the substrate inhibition gave a good fitting for all aeration rates. The R2-values were found to be 0.98, 0.97, 0.94 and 0.94 for the air superficial velocity of 0.0065, 0.0085, 0.01 and 0.015 m/s, respectively. |
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| ISSN: | 1735-1871 2676-5861 |