Abstract
The gas holdup ϵ and the volumetric liquid phase mass transfer coefficients k La were studied experimentally in a downjet loop reactor via the physical absorption of oxygen in air by tap water. Both ϵ and k La increase with increasing gas and liquid velocities and are larger than those in other types of reactors at the same gas and liquid velocities. At a similar power supply per unit liquid volume, k La also shows greater values than those in an upstream jet loop reactor. On the basis of these observations, empirical equations for ϵ and k La are proposed.
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