Journal article
Parameter identification of thermophilic anaerobic degradation of valerate
Applied biochemistry and biotechnology, Vol.109(1), pp.47-62
04/2003
Handle:
https://hdl.handle.net/2376/105650
PMID: 12794283
Abstract
The considered mathematical model of the decomposition of valerate presents three unknown kinetic parameters, two unknown stoichiometric coefficients, and three unknown initial concentrations for biomass. Applying a structural identifiability study, we concluded that it is necessary to perform simultaneous batch experiments with differenitial conditions for estimating these parameters. Four simultaneous batch experiments were conducted at 55°C, characterized by four different initial acetate concentrations. Product inhibition of valerate degradation by acetate was considered. Practical identification was done optimizing the sum of the multiple determination coefficients for all measured state viariables and for all experiments simultaneously. The estimated values of kinetic parameters and stoichiometric coefficients were characterized by the parameter correlation matrix, the confidence interval, and the student's t-test at 9% significance level with positive results except for the saturation constant, for which more eperiments for improving its identifiability should be conducted. In this article, we discussekinetic parameter estimation methods.
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Details
- Title
- Parameter identification of thermophilic anaerobic degradation of valerate
- Creators
- Xavier Flotats - Department of Environment and Soil Science University of Lleida, Rovira Roure 177 25198 SpainBirgitte Ahring - Department of Biotechnology The Technical University of Denmark B-227 2800 Lyngby DenmarkIrini Angelidaki - Department of Environment and Resources The Technical University of Denmark B-115 2800 Lyngby Denmark
- Publication Details
- Applied biochemistry and biotechnology, Vol.109(1), pp.47-62
- Academic Unit
- Chemical Engineering and Bioengineering, School of
- Publisher
- Humana Press; Totowa
- Identifiers
- 99900546742201842
- Language
- English
- Resource Type
- Journal article