Survival of the Aerobic Denitrifier <I>Pseudomonas stutzeri</I> Strain TR2 during Co-Culture with Activated Sludge under Denitrifying Conditions

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概要

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• The aerobic denitrifier <I>Pseudomonas stutzeri</I> TR2 (strain TR2) has the potential to reduce nitrous oxide emissions during the wastewater treatment process. In this application, it is important to find the best competitive survival conditions for strain TR2 in complex ecosystems. To that end, we examined co-cultures of strain TR2 with activated sludge <I>via</I> five passage cultures in a medium derived from treated piggery wastewater that contained a high concentration of ammonium. The results are as follows: (i) The medium supported the proliferation of strain TR2 (<I>P. stutzeri</I> strains) under denitrifying conditions. (ii) Nitrite was a better denitrification substrate than nitrate for TR2 survival. (iii) Strain TR2 also demonstrated strong survival even under aerobic conditions. This suggests that strain TR2 is effectively augmented to the wastewater treatment process, aiding in ammonium-nitrogen removal and reducing nitrous oxide production with a partial nitrification technique in which nitrite accumulates.

著者

• Zhou Shengmin

  Department Of Biotechnology Graduate School Of Agricultural And Life Sciences The University Of Toky

関連論文

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• The Possible Involvement of Copper-Containing Nitrite Reductase (NirK) and Flavohemoglobin in Denitrification by the Fungus Cylindrocarpon tonkinense
• Survival of the Aerobic Denitrifier Pseudomonas stutzeri Strain TR2 during Co-Culture with Activated Sludge under Denitrifying Conditions
• Survival of the Aerobic Denitrifier Pseudomonas stutzeri Strain TR2 during Co-Culture with Activated Sludge under Denitrifying Conditions

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