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Investigation of the Capability of Some Fungal Species to Immobilize and Concentrate NORM |
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PP: 193-200 |
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doi:10.18576/jrna/080301
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Author(s) |
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Gamal A. Mohamed,
Salwa N. A. Mater,
Walaa F. Hassanin,
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Abstract |
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| Microbiota are extremely likely to play a key role in in-situ recovery (ISR) mining at all stages. They can have a beneficial or negative impact on uranium recovery efficiencies, and they play a critical role in mine site remediation. It has been established that fungi can convert uranium solids into secondary mycogenic uranium minerals. Fungal interactions with uranium species have received little attention compared to bacterial subsurface U transformations. In the current study, we investigated the ability of seven locally isolated fungal species which are Aspergillus oryza, Aspergillus flavus, Aspergillus niger, Aspergillus terreus, Ulocladiumatrum, Cladosporium sp, and Fusarium oxyporiumto immobilize naturally occurring radioactive materials (NORM). Aspergillus oryza and Aspergillus niger were shown to be possible good candidates for immobilizing NORM with removal percentages of 97.1% and 98.55% in 48 hours, respectively. Ulocladiumatrum showed a possible capability of specifically immobilizing uranium species with removal percentages of ~100% in 48 hours. Cladosporium sp species showed specificity for uranium species as species Ulocladiumatrum but its rate was 58.39% in 48 hours and required a much longer time to completely immobilize all the activity in the media. |
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