Jiménez Douglas, E.; Giménez García, JB.; Ruano García, MV.; Ferrer, J.; Serralta Sevilla, J. (2011). Effect of pH and nitrite concentration on nitrite oxidation rate. Bioresource Technology. 102:8741-8747. https://doi.org/10.1016/j.biortech.2011.07.092
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/46324
Title:
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Effect of pH and nitrite concentration on nitrite oxidation rate
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Author:
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Jiménez Douglas, Emérita
Giménez García, Juan Bautista
Ruano García, María Victoria
FERRER, J.
Serralta Sevilla, Joaquín
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UPV Unit:
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Universitat Politècnica de València. Instituto Universitario de Ingeniería del Agua y del Medio Ambiente - Institut Universitari d'Enginyeria de l'Aigua i Medi Ambient
Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient
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Issued date:
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Abstract:
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The effect of pH and nitrite concentration on the activity of the nitrite oxidizing bacteria (NOB) in an activated sludge reactor has been determined by means of laboratory batch experiments based on respirometric techniques. ...[+]
The effect of pH and nitrite concentration on the activity of the nitrite oxidizing bacteria (NOB) in an activated sludge reactor has been determined by means of laboratory batch experiments based on respirometric techniques. The bacterial activity was measured at different pH and at different total nitrite concentrations (TNO 2). The experimental results showed that the nitrite oxidation rate (NOR) depends on the TNO 2 concentration independently of the free nitrous acid (FNA) concentration, so FNA cannot be considered as the real substrate for NOB. NOB were strongly affected by low pH values (no activity was detected at pH 6.5) but no inhibition was observed at high pH values (activity was nearly the same for the pH range 7.5-9.95). A kinetic expression for nitrite oxidation process including switch functions to model the effect of TNO 2 concentration and pH inhibition is proposed. Substrate half saturation constant and pH inhibition constants have been obtained. © 2011 Elsevier Ltd.
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Subjects:
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Free nitrous acid
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Nitrite oxidizing bacteria
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Parameter calibration
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PH effect
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Activated sludge reactors
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Bacterial activity
,
Batch experiments
,
Effect of pH
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High pH value
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Inhibition constants
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Kinetic expression
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Nitrite-oxidizing bacteria
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Nitrous acid
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Oxidation process
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Oxidation rates
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PH range
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PH value
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Respirometric technique
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Saturation constant
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Switch function
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Bacteria
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Bacteriology
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Concentration (process)
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Inorganic acids
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Oxidation
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PH effects
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Nitrite
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Nitrous acid derivative
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Unclassified drug
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Activated sludge
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Bacterium
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Bioreactor
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Calibration
,
Concentration (composition)
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Experimental study
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Inhibition
,
Laboratory method
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Microbial activity
,
Numerical model
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Parameterization
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PH
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Reaction kinetics
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Reaction rate
,
Saturation
,
Substrate
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Article
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Batch reactor
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Concentration (parameters)
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Controlled study
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Dissociation constant
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Fluorescence in situ hybridization
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Microscopy
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Nitrogen removal
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Oxidation kinetics
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Priority journal
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Protein expression
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Respirometry
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Waste component removal
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Bioreactors
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Hydrogen-Ion Concentration
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In Situ Hybridization, Fluorescence
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Kinetics
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Nitrites
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Nitrobacter
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Oxidation-Reduction
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Sewage
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Waste Disposal, Fluid
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Bacteria (microorganisms)
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Copyrigths:
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Cerrado |
Source:
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Bioresource Technology. (issn:
0960-8524
)
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DOI:
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10.1016/j.biortech.2011.07.092
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Publisher:
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Elsevier
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Publisher version:
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http://dx.doi.org/10.1016/j.biortech.2011.07.092
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Project ID:
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info:eu-repo/grantAgreement/GVA//ACOMP06%2F144/
info:eu-repo/grantAgreement/MEC//CTM2005-06919-C03-01/ES/MODELACIÓN DE LOS PROCESOS IMPLICADOS EN LA ELIMINACION DE NITROGENO EN EL SOBRENADANTE DE LA DESHIDRATACION DE FANGOS/
info:eu-repo/grantAgreement/MEC//CTM2005-06919-C03-02/ES/ESTUDIO DE TECNICAS AVANZADAS DE ELIMINACION DE NITROGENO EN CORRIENTES CON ELEVADAS CONCENTRACIONES DE NITROGENO AMONIACAL/
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Thanks:
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Financial support from MCYT (Project CTM2005-06919-C03/TECN), Generalitat Valenciana (ACOMP06/144) are gratefully acknowledged.
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Type:
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Artículo
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