Collect. Czech. Chem. Commun.
1979, 44, 2583-2597
https://doi.org/10.1135/cccc19792583
Determination of the aeration capacity of bubble columns by dynamic method. The influence of axial dispersion and of the start-up period
Václav Lineka, Jiří Stejskalb, Jiří Sinkulea and Václav Vacekc
a Prague Institute of Chemical Technology, Department of Chemical Engineering, 166 28 Prague 6
b Institute of Chemical Technology, Department of Chemical Engineering, 530 00 Pardubice
c Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences, 160 00 Prague 6
Abstract
A dynamic method for the determination of volumetric mass transfer coefficient of oxygen, kLa, in bubble columns using an oxygen electrode was derived on the basis of a liquid phase axial dispersion model The influence of aeration startup was studied assuming that the kLa value is position and time dependent. The conditions are defined under which the influence of aeration startup and of axial mixing of the liquid upon the steady state kLa value is negligible. A critical assessment has been made of various methods proposed for evaluation of oxygen probe responses.
