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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4712
Title: Nitrification kinetics of activated sludge-biofilm system: A mathematical model
Authors: Thalla A.K.
Bhargava R.
Kumar P.
Published in: Bioresource Technology
Abstract: Although activated sludge (AS)-biofilm system has many advantages, it lacks in the mathematical concepts for its design. This paper deals with deducing a mathematical model for the simulation of ammonical nitrogen in such systems starting from the basic mass balance equations. Monod kinetic equation and Fickian diffusion principles are coupled to derive the model. The model thus developed is solved numerically and validated with the experimental results obtained on a laboratory scale AS-biofilm system. It is found that the model validated well with the experimental results which was supported by the R2 value of 0.79, further the statistical analysis between the observed and predicted values for various experimental conditions showed that the model tends to under-predict at high removal efficiency, whilst a slight tendency towards over-prediction at low removal efficiency values. Fractional error plot for the NH4+-N data sets showed that the difference between observed and predicted values are insignificant at 5% level of probability for NH4+-N. ¬© 2010 Elsevier Ltd. All rights reserved.
Citation: Bioresource Technology(2010), 101(15): 5827-5835
URI: https://doi.org/10.1016/j.biortech.2010.03.014
http://repository.iitr.ac.in/handle/123456789/4712
Issue Date: 2010
Keywords: AS-biofilm reactors
Mathematical model
Nitrification
Substrate flux
ISSN: 9608524
Author Scopus IDs: 25927568600
7102281661
57206834879
Author Affiliations: Thalla, A.K., Department of Civil Engineering, IIT-Roorkee, Roorkee, 247 667, India
Bhargava, R., Department of Civil Engineering, IIT-Roorkee, Roorkee, 247 667, India
Kumar, P., Department of Civil Engineering, IIT-Roorkee, Roorkee, 247 667, India
Corresponding Author: Thalla, A.K.; Department of Civil Engineering, IIT-Roorkee, Roorkee, 247 667, India; email: thallpce@gmail.com
Appears in Collections:Journal Publications [CE]

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