Results 181 to 190 of about 28,805 (221)
Some of the next articles are maybe not open access.
The Enzymes Associated with Denitrification
Annual Review of Microbiology, 1988NASA: The enzymes involved in the reduction of nitrogenous oxides are thought to be intermediates in denitrification processes. This review examines the roles of nitrate reductase, nitrite reductases, nitric oxide reductase, mechanisms of N-N bond formation, and nitrous oxide reductases.
L I, Hochstein, G A, Tomlinson
openaire +2 more sources
Canadian Journal of Microbiology, 1978
Thirty-three strains of Rhizobium were examined for their reduction of nitrate under anoxic conditions. Three patterns of dissimilatory nitrate reduction were observed: (1) reduction to N2O and N2 (denitrification), (2) reduction to and subsequent accumulation of NO2− (nitrate respiration), (3) no reduction. Strains of R.
R M, Zablotowicz, D L, Eskew, D D, Focht
openaire +2 more sources
Thirty-three strains of Rhizobium were examined for their reduction of nitrate under anoxic conditions. Three patterns of dissimilatory nitrate reduction were observed: (1) reduction to N2O and N2 (denitrification), (2) reduction to and subsequent accumulation of NO2− (nitrate respiration), (3) no reduction. Strains of R.
R M, Zablotowicz, D L, Eskew, D D, Focht
openaire +2 more sources
Nitrification and denitrification in the rhizosphere
Bulletin de la Société Botanique de France, 1975ResumeLa nitrification est generalement ralentie dans la rhizosphere. Cela peut etre du a la secretion de substances toxiques par les racines ou a l'immobilisation acceleree de l'ion ammonium.Les agents et les facteurs de la denitrification sont passes en revue et l'importance de ce phenomene au voisinage des racines est longuement discutee.
openaire +2 more sources
Autotrophic Denitrification Processes
2017Effluents coming from anaerobic digesters are characterized by a COD/N ratio between 2 and 10, high ammonia NH4+ concentrations about 500 mg/L and a temperature range of 25-35 ºC. To remove nitrogen from these effluents biological processes as the autotrophic denitrification with sulfur compounds, hydrogen or methane can be applied.
Belmonte, Marisol +7 more
openaire +2 more sources
Nitrite Reductases in Denitrification
2007Nitrite reductase (NIR) is a key enzyme in the dissimilatory denitrification chain, catalyzing the reduction of NO2 - to NO. Although a matter of debate for a long time, NO is now accepted product of NO2 --reduction as an obligatory intermediate in most denitrifiers, and it is further reduced to N2O by NO reductase. Purification and characterization of
RINALDO, Serena, CUTRUZZOLA', Francesca
openaire +2 more sources
Denitrification and its control
Antonie van Leeuwenhoek, 1994Denitrification in bacteria comprises a series of four reduction reactions; for nitrate, nitrite, nitric oxide and nitrous oxide. Nitrogen gas is the final product. The nature of the enzymes catalysing these reactions is described along with the the properties of the underlying electron transport systems.
openaire +2 more sources
Kinetics of denitrification processes and experimental work for denitrification
2019Suspended growth systems are widely used in the world. In suspended growth system, the microbial culture is maintained in a suspended state and clarifiers are used to separate the suspended biomass. As a result of denitrification in nitrifying activated sludge process, an activated sludge settles poorly due to entrained nitrogen gas.
Sarioglu, M, Horan, NJ
openaire +2 more sources