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| Influencing Factors of Bacterial Oxidation in Acidic In-situ Leaching Uranium Mine Adsorption Tailings |
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Received:March 22, 2022
Revised:March 29, 2022
Accepted:April 02, 2022
Published Online:June 17, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.07.010 |
| KeyWord:microbial leaching; ferrous iron oxidation; uranium ore; influencing factors |
| Author | Institution |
| GONG Hui-chun |
东华理工大学水资源与环境工程学院 |
| LI Ze-bing |
东华理工大学水资源与环境工程学院 |
| SUN Xiao-yu |
东华理工大学水资源与环境工程学院 |
| HAN fei |
东华理工大学水资源与环境工程学院 |
| TU You-yi |
东华理工大学水资源与环境工程学院 |
| DING Jin-hong |
东华理工大学水资源与环境工程学院 |
| WANG Yuan-tong |
东华理工大学水资源与环境工程学院 |
| ZHOU Zhong-kui |
东华理工大学水资源与环境工程学院 |
| ZHOU Yi-peng |
核资源与环境国家重点实验室 |
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| Abstract: |
| In order to determine the feasibility of constructing a bacterial oxidation process system by acid in-situ leaching of uranium ore in Bayanwula, effects of bacterial inoculation rate, acidity, temperature, ferrous concentration, and H2O2 dosage on bacterial ferrous oxide were discussed. The results show that the adsorption tailings of Bayanwula uranium mine have stable ferrous oxidation effect after inoculation with bacteria. When pH value rises to 0.6, the bacteria can still maintain stable activity. The bacteria have strong adaptability to temperature variation. The initial ferrous concentration is 0.35-4.81 g/L, the bacterial ferrous oxidation rate rises gradually with the increase of ferrous concentration. In production, the bacterial ferrous oxidation system needs to ensure sufficient oxygen supply, and low concentration of hydrogen peroxide can be added to the bacterial ferrous oxidation system as an auxiliary way for bacterial oxidation. |
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