Sorption of basic dyes onto granulated pillared clays: Thermodynamic and kinetic studies

► High shear wet granulation of a surfactant-modified aluminium-pillared montmorillonite. ► Adsorption thermodynamic/kinetic of Basic Yellow 28 and Basic Green 4. ► Adsorption is a multi-step process involving external mass transfer and intraparticle diffusion. ► Correlation between diffusion coefficients and granulation/particle size.