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Mathematical model of heat transfer during solid‐state fermentation in well‐mixed rotating drum bioreactors
Author(s) -
Stuart Deidre M,
Mitchell David A
Publication year - 2003
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.920
Subject(s) - bioreactor , drum , heat transfer , mass transfer , solid state fermentation , fermentation , aspergillus oryzae , steady state (chemistry) , chemistry , materials science , process engineering , chemical engineering , mechanics , chromatography , engineering , mechanical engineering , physics , biochemistry , organic chemistry
Abstract We present a mathematical model that describes heat and mass transfer during solid‐state fermentation (SSF) of Aspergillus oryzae in a well‐mixed rotating drum bioreactor (RDB). In addition to the substrate bed and the headspace, the model recognises the bioreactor wall as a subsystem, allowing it to identify the role of this subsystem in heat removal from the bed. Model predictions agree well with previously published experimental data obtained in a rotating drum bioreactor of 0.19 m diameter and 0.85 m length, with maximum temperatures up to 15 °C greater than the incubation temperature being reached. The model offers insights into the rate limiting steps in heat removal, and how SSF performance might be improved in the experimental system. Copyright © 2003 Society of Chemical Industry