NDLI: Characteristics and metabolic pathway of Alcaligenes sp. TB for simultaneous heterotrophic nitrification-aerobic denitrification

Content Provider	Springer Nature Link
Author	Chen, Jun Gu, Siyang Hao, Honghong Chen, Jianmeng
Copyright Year	2016
Abstract	A novel heterotrophic nitrification-aerobic denitrification bacterium, Alcaligenes sp. TB (GenBank accession no. JQ044686), was isolated from a rotating drum biofilter for NO removal. Its characteristics and metabolic pathway for NO removal were comprehensively investigated. Experimental results showed that the nitrification and denitrification efficiency reached 99.42 and 96.44 %, respectively, after 44 h under the conditions of pH 7.2, 30 °C, and 120 rpm. The tests with the addition of Pb2+ and Na2WO4 as the reductase inhibitor revealed that nitrite was the key intermediate to produce the nitrogen gas as the final product in the simultaneous heterotrophic nitrification and denitrification by strain TB. Based on the experimental results, the metabolic pathway of strain TB has been proposed that it carries out shortcut/complete simultaneous nitrification and denitrification with nitrite as an intermediate and nitrogen gas as a final product. The two potential metabolic pathways existing in strain TB can be described as NH4 + → NH2OH → NO2 − → N2O → N2 and NH4 + → NH2OH → NO2 − → NO3 − → NO2 − → N2O → N2. This work indicates that the strain TB may be a good candidate for the denitrification of the sewage.
Starting Page	9787
Ending Page	9794
Page Count	8
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	100
Issue Number	22
e-ISSN	14320614
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-09-27
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Alcaligenes sp. TB Heterotrophic nitrification Aerobic denitrification Metabolic pathway Simultaneous nitrification and denitrification Microbiology Microbial Genetics and Genomics Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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