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Characteristics of immobilized yeast reactors producing ethanol from glucose
Author(s) -
Anselme M. J.,
Tedder D. W.
Publication year - 1987
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/bit.260300606
Subject(s) - biomass (ecology) , diffusion , particle (ecology) , bioreactor , dispersion (optics) , matrix (chemical analysis) , substrate (aquarium) , particle size , chemistry , productivity , ethanol , chemical engineering , materials science , pulp and paper industry , chromatography , thermodynamics , biology , biochemistry , ecology , physics , organic chemistry , macroeconomics , optics , economics , engineering
Abstract The evolutionary performance of up flow reactors are affected by the cell immobilization matrix and the matrix particle size distribution. Higher productivities are obtained using a low‐density brick with a particle size of ca. 400–1400 μm. A medium condition favoring growth quickly leads to large biomass gradients within the reactors and, eventually, reductions in average productivities due to bed plugging. These systems can be accurately modelled using Monod kinetics when dispersion and the biomass gradient are considered. The productivity was apparently not controlled by substrate diffusion in these cases.