The effect of ferrous iron ion concentration on activity of iron-oxidizing microorganisms

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Doklady Bashkirskogo Universiteta. 2018. Volume 3. No. 4. pp. 375-380.

Authors

Bulaev A. G.*
Lomonosov Moscow State University; Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences
1-12 Leninskiye gory, 119234 Moscow, Russia; 33-2 Leninsky Avenue, 119071 Moscow, Russia
Mel’nikova E. A.
Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences; Moscow State Academy of Veterinary Medicine and Biotechnology n.a. K. I. Skryabin
33-2 Leninsky Avenue, 119071 Moscow, Russia; 23 Akademika Skryabin Street, 109472 Moscow, Russia

Abstract

Effect of ferrous iron concentration on activity of acidophilic iron-oxidizing microorganisms was studied. It was shown that high concentration of iron ions inhibited all studied strains, but the most resistant ones were almost completely oxidized up to 500 mM of ferrous iron in the medium. The results obtained are important for the development of biohydrometallurgical technologies based on high temperature ferric leaching since they allow to evaluate the resistance of iron-oxidizing microorganisms belonging to different groups to Fe2+ ions.

Keywords

  • acidophilic microorganisms
  • biohydrometallurgy
  • iron-oxidizing microorganisms
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