The theoretical aspects of the interaction of microorganisms with compounds of Fe are examined, and the reduction of Fe (III) and Fe (II) by museum strains Bacillus subtilis 316M, Pseundomonas aeruginosa ATCC 10145, Escherichia coli К 12, and Clostridium lituseburense K-l are experimentally investigated. It is shown that museum strains reduce Fe (III) only to Fe (II) accordingly to the theoretical prognosis. Microbial reduction of Fe (III) is not a specific process because the investigated strains do not use Fe (III) as the terminal acceptor of electrons. The interaction of microbial strains with Fe (III) and Fe (II) leads to their extraction from water solutions. The unspecificity of the processes of microbial reduction and accumulation of Fe (III) and Fe (II) from solutions allows one to forecast the Fe-cycle regularity in the environment and create industrial microbial technologies to purify waste waters from Fe.

• Таширев Олександр Борисович (біологічні науки)

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