A multi‐parameter model for absorption

A three‐parameter model for mass transfer by absorption, based on a combined effect of non‐steady‐state molecular and eddy diffusion through a resistance zone has been suggested, which encompasses all the existing theories on mass transfer at the gas‐liquid interface. King's approach [5] to describing gas‐liquid mass transfer phenomena through an eddy‐diffusivity model can explain some experimental results, but does not provide a general mathematical solution of the problem. The shortcomings of the King's model are overcome in the present work and a general solution is presented. This solution confirms the experimental findings of Versteeg et al. [10] for liquid phase mass transfer. The steady‐state solution of the present theory, valid for the dimensionless number α > 0, shows a close agreement with experimental data of Luk [22], the only source of all the information necessary for model verification.