Modeling of Mixing Time for Bioreactors with Self-Inducing Impellers

The mixing time is one of the most useful criterions for characterization of the broths mixing intensity and for scaling up of biosynthesis processes. This parameter value depends mainly on the presence of biomass in the broths, mixing system characteristics and operating conditions. For quantifying the influence of these factors on mixing efficiency, this study was carried out for simulated fermentation aerated broths consisted of carboxymethyl cellulose sodium salt (CMCNa) taking into account the broth s viscosity, rotation speed (rpm) and the stirrer geometry