Adsorption from solutions onto solid surfaces. Effects of topography of heterogeneous surfaces on adsorption isotherms and heats of adsorption

Abstract

A model investigation is presented, showing the effects of the topography of heterogeneous solid surfaces on adsorption from binary liquid mixtures onto solid surfaces. Equations are developed for excess adsorption isotherms and heats of immersion, for both patchwise and random surface topography, when the adsorbed solution is a quadratic mixture. Using the developed equations, numerical model calculations are carried out for some typical values of heterogeneity and interaction parameters.