This paper proposes a systematic methodology for the analysis of the mass and charge balances in dynamic models expressed using the Petersen matrix notation. This methodology is based on the definition of the model components via elemental mass fractions and in the estimation of the COD as a function of the redox equations associated with these elements. This approach makes the automatic calculation of all the stoichiometric coefficients under different measuring units and the study of COD, charge or mass fluxes easier. As an example of its application this methodology was applied to the ADM1 in order to illustrate its usefulness for the analysis of organic matter characterisation, nitrogen release or biogas composition in anaerobic digestion. The application of the methodology for a rigorous integration of different IWA models is proposed for further study.
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Research Article|
January 01 2006
Mass and charge conservation check in dynamic models: application to the new ADM1 model
M. de Gracia;
*CEIT, Section of Environmental Engineering, P.O. Box 1555, San Sebastián, Spain
E-mail: mdegracia@ceit.es
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L. Sancho;
L. Sancho
**TECNUN, School of Engineering, University of Navarra, Spain
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J.L. García-Heras;
J.L. García-Heras
*CEIT, Section of Environmental Engineering, P.O. Box 1555, San Sebastián, Spain
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P. Vanrolleghem;
P. Vanrolleghem
***BIOMATH, Department of Applied Mathematics, Biometrics and Process Control, Ghent University, Coupure Links 653, B-9000 Gent, Belgium
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E. Ayesa
E. Ayesa
**TECNUN, School of Engineering, University of Navarra, Spain
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Water Sci Technol (2006) 53 (1): 225–240.
Citation
M. de Gracia, L. Sancho, J.L. García-Heras, P. Vanrolleghem, E. Ayesa; Mass and charge conservation check in dynamic models: application to the new ADM1 model. Water Sci Technol 1 January 2006; 53 (1): 225–240. doi: https://doi.org/10.2166/wst.2006.025
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