This work reports the application of a natural clay and an alumina-pillared clay as adsorbents for the removal of a basic dye, Methylene Blue, from aqueous solutions.The intercalation and pillaring processes improve the adsorption capacity of the montmorillonite.The adsorption kinetics of the dye has been studied in terms of pseudo-fi rst-order and pseudo-second-order models.The equilibrium data are mathematically modelled using Freundlich, Langmuir and Sips isotherm adsorption models.