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Showing 1 to 20 of 26 for “"Nitrosomonas"”.
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Molekulare und physiologische Charakterisierung des Energiestoffwechsels von Nitrosomonas europaea
Die lösliche Ammoniak-Monooxygenase (AMO) aus Nitrosomonas europaea ist in ungefähr der gleichen Menge wie die membrangebundene AMO vorhanden. Beide Formen sind in vivo aktiv und besitzen eine ähnliche spezifische Aktivität. Die lösliche AMO ist ein Cu-, Fe- und möglicherweise auch Zn-haltiges …
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Variations in the Oxidative Rates of Nitrosomonas europaea in Coke-Plant Activated Sludge.
… contains about four orders of magnitude more Nitrosomonas cells than found by most probable number estimates. Nitrosomonas was found to comprise about 2 percent of the total cells in coke-plant mixed liquor maintained at a 25-day solids retention time (SRT) or greater, and about 1 percent at …
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Characterizing biological nitrification inhibition using native Nitrosomonas europaea: mechanism studies and maize cultivar screening
… ammonia-oxidizing bacteria (AOB), such as Nitrosomonas europaea, oxidize NH₄⁺ and ammonia (NH₃) to nitrite (NO₂⁻), which is further converted to nitrate (NO₃⁻) by nitrite-oxidizing microorganisms and eventually reduced to di-nitrogen (N₂) via denitrification. These processes release nitrous …
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Nitrogen assimilation and energy conservation in Nitrosomonas europaea and Nitrobacter agilis / by Sharad Kumar
Bibliography: leaves 183-202
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Biochemical Characterization of Self-Sacrificing P-Aminobenzoate Synthases from Chlamydia Trachomatis and Nitrosomonas Europaea
… some organisms such as Chlamydia trachomatis and Nitrosomonas europaea which do not contain the canonical THF biosynthesis genes, despite still being able to synthesize THF de novo. Previous studies have shown that these organisms do not contain the pabABC genes, normally required to synthesize …
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Effects of copper on nitrification and denitrification of leachate from an abandoned landfill
… in aerobic and anoxic reactors, respectively. Nitrosomonas species were more strongly inhibited by copper concentrations than were the Nitrobacter species. The denitrifiers appeared to be as sensitive to copper as the Nitrosomonas species.
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The effect of simazine on nitrification and the decomposition of simazine by soil microorganisms
… The herbicide had no effect on the growth of Nitrosomonas europaea in shake flask culture, but did inhibit the growth of Nitrobacter agilis. The addition of yeast extract to the culture medium did not reverse the inhibition. Simazine did not inhibit the respiration of N. agilis even at a …
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Application of bioaugmentation to improve nitrification at the Gammams Wastewater Treatment Plant
… and by bioaugmentation using pure strains of Nitrosomonas and Nitrobacter. Sampling was performed once off for the growing on culture media, which was then used for molecular experimentation. Samples were then collected once a week for a duration of 9 weeks for the inhibition experiments, and …
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The effect of ammonial loading, solids retention time and operating temperature on the biological nitrification and denitrification of high ammonia landfill leachate
… inhibitory to either the ammonia oxidizers (Nitrosomonas) or to the denitrifiers, but may have inhibited nitrite oxidizers (Nitrobacter), thereby resulting in nitrite accumulation. When the influent ammonia concentration was raised from 1500 to 2000 mg N/L, nitrification in both systems was …
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Micropollutants biotransformation by two nitrifying communities enriched from biofilm of a nitrification trickling tower
… However, when using pure AOB cultures, such as Nitrosomonas europaea, only few of these micropollutants could be biotransformed. Such discrepancy might due to the facts that the tested pure cultures were disparate with the AOB in NAS, and the microorganisms dependently growing with AOB, such as …
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Optimization of Nitrogen Removal Rate in One-Stage Reactor through Partial Nitrification Anammox Process during Direct Treatment of Poultry Litter Wastewater
… of the dominant ammonia-oxidizing bacteria (Nitrosomonas), the dominant anammox bacteria (Candidatus Brocadiaceae), and the dominant comammox bacteria (Nitrospira) changed from 2.75%, 2.56%, and 0% to 3.57%, 1.18%, and 0.06%, respectively.</p>
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Ammonia-monooxygenase-mediated cometabolic biotransformation and abiotic transformation of micropollutants
… NOB pure culture (Nitrobacter sp.), and an AOB (Nitrosomonas europaea)/NOB co-culture for fifteen MPs, whose biotransformation were associated with nitrification activities. The NOB did not biotransform any MP investigated, whereas the AOB/NOB co-culture was capable of biotransforming asulam, and …
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Oxygen isotope systematics of nitrification
… oxidation, using ammonia oxidizing bacteria, Nitrosomonas sp. C113a and Nitrococcus oceani, and nitrite oxidation using cultures of the nitrite oxidizing bacterium, Nitrosococcus mobilis. The exchange value in the ammonia oxidation experiments could not be calculated because of unexpected …
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Mikrobiologie der Stickstoffentfernung in den Biofiltern einer marinen Aquakultur mit geschlossenem Wasserkreislauf
… Bakterien (AOB) waren Mitglieder der Nitrosomonas sp. Nm143-„Lineage“ (6,7% des Gesamtbiovolumens), gefolgt von einer Nitrosomonas marina-verwandten AOB-Gruppe (2,2% des Gesamtbiovolumens). Beide zusammen wurden zahlenmäßig übertroffen von den nitritoxidierenden Bakterien (NOB) der …
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On-line measurement of active biomas
… nitrifying culture and pure cultures of <i>Nitrosomonas</i>) were shown to have a specific activity between 79,012 and 265,965 catalase units g<sup>-1 </sup>MLVSS. Nitrification ability of the cultures was inhibited by ATU and 3,5-DCP while catalase activity remained stable for more than one …
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Biochemistry: Production of recombinant Rh blood group antigens for detection of alloimmunisation
… to construct a hybrid Rh protein comprised of a Nitrosomonas europaea (N. europaea) Rh50 backbone containing di erent external loops of the human RhD protein. Human RhD external loop 6 was the most suitable candidate to start with due to its location between highly conserved domains of the …
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Characterization of the Diverse Substrate Specificities and Biological Roles of Polyamine Biosynthetic Enzymes in Microorganisms
… within Methanosarcina, Pseudomonas, Bartonella, Nitrosomonas, Thermotoga and Aquifex showed a strong preference for L-ornithine, while the enzyme from Vibrio vulnificus (VvL/ODC) had dual specificity functioning well on both L-ornithine and L-lysine. The X-ray structure of VvL/ODC was solved in …
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Development of Aerobic Granular Sludge Membrane Bioreactor (AGMBR) to Mitigate Fouling
… present throughout the experimental duration. Nitrosomonas and Nitrospira allowed for complete nitrification. The presence of Azoarcus and Thauera points to anoxic conditions in AG, indicating some denitrification activity. Negligible phosphorus-accumulating organisms were detected; hence, the …
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Viabilidad de un proceso para la eliminación conjunta de H2S y NH3 contenido en efluentes gaseosos
… de H2S (BTT) y el otro biofiltro percolador con Nitrosomonas europaea ATCC 19718 para la eliminación de NH3 (BNE). El efecto del la velocidad superficial del medio de recirculación, concentraciones de nitrito y sulfato, pH, tiempo de residencia en el lecho (EBRT) y cargas de entrada de NH3 y H2S …
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Chemical Inhibition of Nitrification: Evaluating Methods to Detect and Characterize Inhibition and the Role of Selected Stress Responses Upon Exposure to Oxidative and Hydrophobic Toxins
… does not exist in two nitrifying bacteria, Nitrosomonas europaea and Nitrospira moscoviensis. Furthermore, we showed that another important antioxidant molecule, glutathione, was not oxidized as readily as in a non-nitrifying bacterium. Furthermore, we hypothesized that hydrophobic …
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