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Prediction of average biofilm density and performance of a spherical bioparticle under substrate inhibition
Author(s) -
Tanyolaç Abdurrahman,
Beyenal Haluk
Publication year - 1997
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/(sici)1097-0290(19971105)56:3<319::aid-bit10>3.0.co;2-b
Subject(s) - substrate (aquarium) , biofilm , chemistry , chemical engineering , chromatography , materials science , microbiology and biotechnology , biology , bacteria , engineering , ecology , genetics
In this article, a model was proposed to predict the average performance and biofilm density of a spherical bioparticle under substrate inhibition in a fluidized bed system. The average biofilm density and substrate consumption rates were predicted for a definite biofilm thickness and limiting substrate concentrations. A diffusion and reaction model was developed over the bioparticle with biofilm‐density dependent effective diffusion coefficients for maximum substrate consumption theory. This theory predicts the optimum density of a biofilm to yield a maximum substrate consumption rate within the biofilm, developed for the first time with this study and experimentally verified. A good correlation was observed between the model prediction and experimental results for biofilm density and substrate consumption rates. © 1997 John Wiley & Sons, Inc. Biotechnol Bioeng 56: 319–329, 1997.