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BIOCHEMICAL MODEL AND MECHANISM FOR ACINETOBACTER NITRITE INHIBITION

  • Lee, Chan-Won ;
  • Weon, Seung-Yeon
  • Published : 2005.02.28

Abstract

Nitrite accumulation is not unusual in batch processes such as sequencing batch reactor (SBR) with high-strength of ammonium or nitrate wastewaters. A possible mechanism of nitrite inhibition on Acinetobacter was depicted in a biochemical model, which the protonated species, nitrous acid form of nitrite, affects proton relating transport at the proton-pumping site crossing the cell membrane under unlimited carbon and phosphorus conditions. This effect exerts inhibition of phosphorylation under aerobic condition and yields low APT/ADP ratio, consequently decrease poly-P synthesis and phosphorus uptake from outside the cell in the model.

Keywords

References

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