Abstract
This article presents data on the possible impact of aerobic and anaerobic microbiological processes in the upper aquifers to uranium migration t sulfate and nitrate polluted waters near to Novosibirsk chemical concentrate plant. Uranium immobilization is possible in local areas, with high content of organic substances and the most important microbiological process is the redox potential reduction due to aerobic respiration. After that in anaerobicс conditions redox-dependent uranium reduction can be expected. Moreover, in the presence of sulfate ions, further anaerobic processes of microbial sulfate reduction and iron reduction lead to the formation of iron sulphide, which plays the significant role of an antioxidant buffer in the case of oxygen migration.
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