, Volume 69, Issue 1, pp 89–95 | Cite as

Physicochemical and microbiological characteristics of groundwater from observation wells of a deep radioactive liquid waste repository

  • T. N. Nazina
  • I. M. Kosareva
  • A. S. Davidov
  • T. P. Tourova
  • E. V. Novikova
  • R. R. Khafizov
  • A. B. Poltaraus
Experimental Articles


A radioactive liquid waste repository was found to be the habitat of a rich microbial community with a high catabolic potential. Groundwater from a depth of 162–189 m contained aerobic saprotrophic and anaerobic fermentative, sulfate-reducing, and denitrifying bacteria. Nitrate-reducing bacteria residing in this groundwater were isolated in pure cultures. Based on the results of their physiological studies, 16S rRNA sequencing, and phylogenetic analysis, the microorganisms isolated were ascribed to one phylogenetic branch, the γ-subclass of gram-negative bacteria. Among six isolates, four belonged to the genusAcinetobacter, whereas two others belonged to the generaComamonas andAeromonas. The data obtained indicate that the microflora of the repository can exert a certain effect on the chemical composition of the formation fluids and bearing rocks, as well as on the migration of radionuclides

Key words

the number of bacteria groundwater nitrate reduction 16S rRNA phylogeny radioactive waste 


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Copyright information

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • T. N. Nazina
    • 1
  • I. M. Kosareva
    • 2
  • A. S. Davidov
    • 2
  • T. P. Tourova
    • 1
  • E. V. Novikova
    • 1
  • R. R. Khafizov
    • 3
  • A. B. Poltaraus
    • 4
  1. 1.Institute of MicrobiologyRussian Academy of SciencesMoscowRussia
  2. 2.Institute of Physical ChemistryRussian Academy of SciencesMoscowRussia
  3. 3.Mining and Chemical PlantZheleznogorskRussia
  4. 4.Engelhardt Institute of Molecular BiologyRussian Academy of SciencesMoscowRussia

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