Denitrification by Isolated Soil Bacteria Under Various Environmental Conditions

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Abstract
Nitrate reducing microorganisms were isolated from soil and their denitrifying properties were compared under various environmental conditions. The isolated denitrifiers cultured in a liquid medium under anaerobic conditions responded differently to changing pH, temperature, nitrate or nitrite concentration. Unfavorable growth conditions led to the accumulation of nitrite. Various combinations of the selected bacteria revealed that interactions occur among the microbes during growth in relation to their denitrifying activity. Variation among bacterial species and specific environmental conditions resulted in different denitrifying characteristics; therefore, generalizations cannot be made regarding microbial denitrification in soil for possible applied uses.
Funding Information
  • Federal Water Pollution Control Administration

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