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Biological Solubilization and Sorption of Uranium from ore Sample at Abu Thor area, Southwestern Sinai, Egypt using Aspergillus Nidulans |
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PP: 27-35 |
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doi:10.18576/jrna/070104
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Author(s) |
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Nilly A. Kawady,
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Abstract |
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| Now the solubilization process of heavy metals by microorganisms is an established biological technology technique, as biological solubilization, is a promising technology economically and ecofriendly alternative process to the traditional ones for treating ores. This work aimed to investigate the biological solubilization of uranium from its ore sample collected from Abu Thor, southwestern Sinai, Egypt by using a native isolated fungus from the rock sample. At the same time, evaluate the uranium biological sorption during the biological solubilization process.The radiometric measurements were estimated by using NaI (Tl) detector. The solubilization process of uranium was carried out for the studied ore sample using the native isolated fungus, which was identified morphologically as Aspergillus nidulans. It was leading to a high biological solubilization efficiency of uranium under optimized conditions of pH 3, 3% pulp density, 7 days incubation time, and 30oC incubation temperatures. Furthermore, the biological sorption process was studied during the biological solobilization process. The results showed that the optimum biological sorption conditions were: pH value equals 9, 5% pulp density, 9 days incubation time, and 35°C incubation temperatures, which exhibited the maximum biological sorption. Finally, the biological recovery of uranium from one kg of the sample was achieved 83%. |
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