Mixing and oxygen transfer in conventional stirred fermentors.
A set of experiments has been performed in an industrial 112 m(3) fermentor in order to get a complete map of oxygen concentration and temperature distribution in the system. Five fermentations of non-Newtonian broths of two different strains, in various operating conditions, were examined. A simple model has been developed which takes into account both the mixing and the mass-transfer properties of the fermentor, and a dimensionless parameter has been identified which is sufficient to characterize the oxygen axial distribution in the reactor in any operating condition.
Manfredini
R
R
Farmitalia, C. Erba S.p.A., Prod., Bios. Bioingegneria, Settimo Torinese, Italy.
Cavallera
V
V
Marini
L
L
Donati
G
G