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Some observations on free ammonia inhibition to Nitrobacter in nitrifying biofilm reactor

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Summary

Free ammonia inhibition to Nitrobacter population in a nitrifying biofilm was investigated. It was found that when the tree ammonia concentration is greater than 0.1 mgN/l the oxidative activity of Nitrobacter was significantly inhibited, and resulting in a transient accumulation of nitrite ions. The results show that Nitrobacter population is capable of rapidly recovering its lost metabolic activity once the free ammonia concentration becomes less than 0.1 mgN/l, and a complete oxidation of nitrite to nitrate was achieved.

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Authors and Affiliations

  1. Unite de Recherche Traitement Biologique des Eaux, GPI-INSA, omplexe Scientifique de Rangueil, 51077, Toulouse, France

    Yu Liu & Bernard Capdeville

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  1. Yu Liu
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  2. Bernard Capdeville
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Liu, Y., Capdeville, B. Some observations on free ammonia inhibition to Nitrobacter in nitrifying biofilm reactor. Biotechnol Lett 16, 309–314 (1994). https://doi.org/10.1007/BF00134631

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  • DOI: https://doi.org/10.1007/BF00134631

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