Approximate analysis of frontal sorption dynamics for sharp convex sorption isotherms
The problem of frontal sorption dynamics for sharp convex isotherms which take place often in practice is discussed. Model of the equilibrium sorption dynamics with longitudinal diffusion which is applied widely in chromatography is used. It is showed that approximation of these isotherms by piecewise-linear isotherms (in particularly rectangular isotherms) permits to obtain analytical decisions which are suitable for small and long times of this process.