Oxygen Absorption Characteristics in a Square Aeration Column

概要

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Oxygen absorption rates in microbial culture medium were measured for aeration columns, 15 cm on a side and 100 or 200 cm in height. Also, axial dispersion coefficients in the gas and liquid phases were measured in the same columns for the calculation of volumetric mass transfer coefficients. Axial dispersion coefficients in the liquid phase were very close to those predicted by the previous correlation. However, the coefficients in the gas phase were somewhat smaller than those calculated by the previous correlation.Gas hold-up in water was measured by an overflow method. The results obtained agree roughly with those for a round column having the same cross sectional area as a square one. Volumetric mass transfer coefficients were obtained by taking into account the change in gas solubility and velocity due to liquid height based on the axial dispersion model. Close agreement between experimental values of the coefficients with those of the previous work for round columns was obtained.
公益社団法人日本生物工学会の論文
1983-08-25