This paper provides a suitable method for studying thermal swing chromatogr
aphic kinetics and estimation of model parameters, considering the change o
f bed porosity. As an experimental example, the separation of the citric ac
id is discussed. The model parameters were measured on an analytical column
. With these thermodynamic parameters it was attempted to simulate the sepa
ration behaviour in larger columns using the equilibrium dispersive model,
the result was very satisfactory.