Identifiability study of the proteins degradation model, based on ADM1, using simultaneous batch experiments

X. Flotats, J. Palatsi, Birgitte Kiær Ahring, Irini Angelidaki

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The objective of the present study is to analyse kinetic and stoichiometric parameter values of
    gelatine anaerobic degradation at thermophilic range, based on an experiment designed to elucidate if
    volatile fatty acids (VFA) are inhibitors of the hydrolysis process. Results showed that VFA are not inhibiting
    the hydrolysis process. The ADM1 model adequately expressed the consecutive steps of hydrolysis and
    acidogenesis, with estimated kinetic values corresponding to a fast acidogenesis and slower hydrolysis. The
    hydrolysis was found to be the rate limiting step of anaerobic degradation. Estimation of yield coefficients
    based on the relative initial slopes of VFA profiles obtained in a simple batch experiment produced
    satisfactory results. From the identification study, it was concluded that it is possible to determine univocally
    the related kinetic parameter values for protein degradation if the evolution of amino acids is measured in
    simultaneous batch experiments, with different initial protein and amino acids concentrations.
    Original languageEnglish
    JournalWater Science and Technology
    Volume54
    Issue number4
    Pages (from-to)31-39
    Number of pages9
    ISSN0273-1223
    DOIs
    Publication statusPublished - 2006

    Fingerprint

    Dive into the research topics of 'Identifiability study of the proteins degradation model, based on ADM1, using simultaneous batch experiments'. Together they form a unique fingerprint.

    Cite this