Combined nitrification‐denitrification processes

: Nitrification and denitrification have traditionally been regarded as essentially separate phenomena, carried out by different bacteria in segregated areas of soil, sediments, water or reactors. However, research in the 1980s and 1990s has established that nitrifiers and denitrifiers are not as me...

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Bibliographic Details
Published in:FEMS microbiology reviews 1994-10, Vol.15 (2‐3), p.109-117
Main Authors: Kuenen, J.Gijs, Robertson, Lesley A.
Format: Article
Language:English
Subjects:
Bacteriology
Biological and medical sciences
Biology of microorganisms of confirmed or potential industrial interest
Biotechnology
Denitrification
Fundamental and applied biological sciences. Psychology
Metabolism. Enzymes
Microbiology
Mission oriented research
N2O
Nitrification
Nitrosomonas europaea
Physiology and metabolism
Wastewater
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Summary:: Nitrification and denitrification have traditionally been regarded as essentially separate phenomena, carried out by different bacteria in segregated areas of soil, sediments, water or reactors. However, research in the 1980s and 1990s has established that nitrifiers and denitrifiers are not as metabolically fastidious as previously thought, and strict segregation is not necessary. Moreover, some bacteria are able to convert NH44 and other reduced nitrogen compounds to nitrogen gas and the gaseous nitrogen oxides in combined nitrification/denitrification processes. Such organisms are of interest for wastewater treatment for two opposing reasons. Firstly, the idea of single‐stage nitrogen removal has obvious attractions for system design. Secondly, N2O is a serious pollutant, implicated in virtually all current environmental problems (e.g. acid rain, greenhouse effect, ozone depletion).
ISSN:0168-6445
1574-6976
DOI:10.1111/j.1574-6976.1994.tb00129.x