Sandstone Type Uranium Deposit In Different Ore Belt Can Cultivate Sulfate Reducing Bacteria And Their Distribution

With the development of in-situ leach uranium mining, many non-economic or economic sandstone type uranium deposit into economically recoverable uranium resources which has become one of the world’s most important uranium deposit types.Study on the relationship between species,distribution and biomineralization of SRB in Shihongtan uranium deposit in Xinjiang province, provide a theoretical basis for microbial mineralization.Objectives:Investigate the main cultivated SRB groups which take part in the cycling of sulfur, iron and uranium. Research the reaction among different microorganisms and the mechanism of SRB and iron bacteria in the mineralization in shihongtan sandstone uranium deposit.Methods:By using MPN method, sulfate-reducing bacteria and iron bacteria in the Shihongtan uranium deposit in Xinjiang province were counted and SRB were isolated and identified. Analysis the relationship between microbial distribution law, uranium deposits geochemical zonation and the mineral element content.Results:According the counting of SRB and iron bacteria in shihongtan sandstone type uranium deposit, it shows apparent regularity with the various mineral elements in uranium deposits such as uranium, organic carbon and iron ions.Phylogenetic analysis indicated that the bacterial communities were affiliated with Desulfosporosinus, Pseudomonas, Comamonas and Pantoea.Conclusions:SRB, iron bacteria and Thiobacillus in the Shihongtan uranium deposit showed itself an obvious characterstics of geochemical distribution. Its distribution was of great significance to the geochemical cycles of element S and the formation of uranium deposit.