Pseudomonas denitrificans

Pseudomonas denitrificans is a type of active denitrifier that is used for the removal of nitrate from groundwater and wastewater. It is one of the naturally selected mixed cultures in the biofilm, maintained under a flue gas environment, and is capable of completely reducing NO from flue gas using NO as a terminal electron acceptor. Pseudomonas denitrificans reduces NO3− to N2 using fixed carbon (biomass) as a source of energy.From: Environmental Microbiology for Engineers [2020], Nitric oxide and nitrite removal by partial denitrifying hollow-fiber membrane biofilm reactor coupled with nitrous oxide generation as energy recovery [2022], Groundwater Geochemistry and Isotopes [2019]

Microaerophilic and Facultative Aerobic Prokaryotes

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Published in Volodymyr Ivanov, Environmental Microbiology for Engineers, 2020

Volodymyr Ivanov

Active denitrifiers, which are used for the removal of nitrate from groundwater and wastewater, are, for example, Pseudomonas denitrificans and Paracoccus denitrificans. Electron donors for industrial scale denitrification can be methanol or ethanol. Hydrogen or sulfur can be used for the industrial-scale autotrophic denitrification of drinking water and seawater, respectively: 10H2+4NO3−→2N2+8H2O+4OH−5S+6NO3−+2H2O→5SO42−+3N2+4H+

Nitric oxide and nitrite removal by partial denitrifying hollow-fiber membrane biofilm reactor coupled with nitrous oxide generation as energy recovery

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Published in Environmental Technology, 2022

Khin Hnin Yu, Faruk Can, Pınar Ergenekon

Alicycliphilus denitrificans is a Gram-negative denitrifying bacterium which has a nosZ gene that reduces N2O to N2 when it uses nitrate or nitrite as electron acceptors [62]. Pseudomonas denitrificans is one of the naturally selected mixed cultures in the biofilm, maintained under a flue gas environment, and it has performed NO reduction completely from flue gas (0.5% NO) using NO as a terminal electron acceptor [63]. Pseudomonas aeruginosa is genetically flexible and usually performs complete denitrification. Whereas, the nosZ genes of the denitrifiers can be inhibited by high phosphate supply [57] which was actually observed in the phases of high phosphate feedings. Pseudomonas putida has a complicated metabolic process and the potential to treat nitrogen-polluted wastewater at low temperatures [64]. Also, 82.9–94.2% NO reduction from flue gas with 95% denitrifying capability has been obtained in a biotrickling filter using Pseudomonas putida [14].

Pseudomonas denitrificans

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Microaerophilic and Facultative Aerobic Prokaryotes

Nitric oxide and nitrite removal by partial denitrifying hollow-fiber membrane biofilm reactor coupled with nitrous oxide generation as energy recovery