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Modeling of the Substrate and Product Transfer Coefficients for Ethanol Fermentation
Author(s) -
Žerajić S.,
SavkovićStevanović J.,
Grbavčić Ž.
Publication year - 2008
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200700297
Subject(s) - fermentation , chemistry , ethanol , substrate (aquarium) , diffusion , mass transfer , product inhibition , biocatalysis , ethanol fermentation , chromatography , chemical engineering , thermodynamics , catalysis , organic chemistry , reaction mechanism , enzyme , non competitive inhibition , oceanography , physics , engineering , geology
The transfer phenomena of the substrate and product for ethanol fermentation with immobilized biocatalyst were investigated. Fermentation was carried out with a biocatalyst consisting of Ca‐alginate gel in the form of two‐layer spherical beads in anaerobic conditions. The determination of kinetic parameters was achieved by fitting bioreaction progress curves to the experimental data. The calculation of the diffusion coefficients was performed by numerical methods for experimental conditions. Finally, the glucose and ethanol transfer coefficients are defined and determined, using the effective diffusion coefficients.