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| Experiment on Fermentation Liquor Leaching of Aspergillus Niger from High Carbonate Uranium Ore |
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Received:January 27, 2022
Revised:January 30, 2022
Accepted:February 09, 2022
Published Online:May 11, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.06.009 |
| KeyWord:Aspergillus Niger; fermentation liquid; organic acid; high carbonate; uranium ore |
| Author | Institution |
| ZHANG Yi-nuo |
东华理工大学 核资源与环境国家重点实验室;东华理工大学 水资源与环境工程学院 |
| XU Ling-ling |
东华理工大学 核资源与环境国家重点实验室;东华理工大学 水资源与环境工程学院 |
| CAI Jia-yi |
东华理工大学 水资源与环境工程学院 |
| ZHOU Yi-peng |
东华理工大学 核资源与环境国家重点实验室;东华理工大学 水资源与环境工程学院 |
| MU Hai-lin |
东华理工大学 核资源与环境国家重点实验室;东华理工大学 水资源与环境工程学院 |
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| Abstract: |
| Chemical plugging of high carbonate uranium leaching has always been a difficult problem in acid and alkali processes. Leaching test of a high carbonate sandstone uranium deposit in Xinjiang was carried out with Aspergillus Niger fermentation liquid, and the comparison test of mixed organic acid solution and sulfuric acid solution prepared by Aspergillus Niger fermentation acid composition was carried out respectively. The results show that leaching effect of uranium in Aspergillus Niger fermentation liquid is better than that of mixed organic acid and sulfuric acid. Calcium reprecipitation also exists in fermentation liquid and mixed organic acid system, and degree of reprecipitation can be reduced by increasing pH value of the system. |
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