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| Experiment of Bioleaching of Uranium Ore under Different Acidities |
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Received:September 06, 2012
Revised:September 07, 2012
Accepted:September 07, 2012
Published Online:October 23, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.11.015 |
| KeyWord:uranium ore; bioleaching; acidity; leaching rate |
| Author | Institution |
| zhouzhongkui |
东华理工大学水资源与环境工程学院 |
| sunzhanxue |
东华理工大学水资源与环境工程学院 |
| gaofeng |
山东省地质环境监测总站 |
| gaobai |
东华理工大学水资源与环境工程学院 |
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| Abstract: |
| The bioleaching experiment was carried out for one uranium ore under different acidities. The uranium leaching rate, acid consumption and bacterial growth in the leaching process were analyzed. The results show good bacterial leaching can be achieved on this uranium ore with the average leaching rate of liquid of 87.7%, and the average leaching rate of slag of 94.1%. The concentration of sulfuric acid at different stages of acidification has little effect on the overall consumption of acid. Concentrated sulfuric acid can reduce the acidification time significantly. In bacteria leaching, the higher the pH value is, the less the acid consumption and the better the growth of bacteria are. To note, leaching rate is not improved with the good growth of bacteria as expected, which is due to the forming of iron hydroxide and precipitation of ferroalumen. |
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