Search results for "Partial nitritation"

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Effect of pH and HNO2 concentration on the activity of ammonia-oxidizing bacteria in a partial nitritation reactor

2013

Ammonia-oxidizing bacteria (AOB) are very sensitive to environmental conditions and wastewater treatment plant operational parameters. One of the most important factors affecting their activity is pH. Its effect is associated with: NH3/NH4 þ and HNO2/NO2 chemical equilibriums and biological reaction rates. The aim of this study was to quantify and model the effect of pH and free nitrous acid (FNA) concentration on the activity of AOB present in a lab-scale partial nitritation reactor. For this purpose, two sets of batch experiments were carried out using biomass from this reactor. Fluorescent in situ hybridization analysis showed that Nitrosomona eutropha and Nitrosomona europaea species we…

INGENIERIA HIDRAULICAEnvironmental EngineeringPHNitriteInorganic chemistryMicrobial metabolismBiomassNitrous AcidAOBAmmoniachemistry.chemical_compoundBioreactorsAmmoniaBioreactorNitriteTECNOLOGIA DEL MEDIO AMBIENTENitritesWater Science and TechnologyFree nitrous acidNitrous acidNitratesBacteriabiologyPartial nitritationHydrogen-Ion Concentrationbiology.organism_classificationQuaternary Ammonium CompoundschemistrySewage treatmentOxidation-ReductionBacteriaWater Science and Technology

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