ABSTRACT
The effect of hydrodynamic conditions in the liquid phase of a vertical, co-current air water bubbly flow on the mass-transfer of oxygen has been investigated experimentally. It is discussed which fluiddynamic mechanisme have to be considered to describe the behaviour of such an air-water flow. The parameters turbulence intensity and mean flow velocity of the water flow and the air flow rate were varied and correlated with the overall volumetric mass-transfer coefficient kL• a.
