Isotherm and Thermodynamics Study of Congo Red and Procion Red Adsorption over Natural and Zn/Fe Pillared Bentonite

The effect of initial Congo Red and Procion concentration on isotherm adsorption thermodynamic study using natural Zn/Fe Pillared bentonite have been conducted. adsorbents were also characterized by Fourier transform infrared (FTIR), X-Ray Diffraction (XRD), Scanning electron microscope-energy dispersive analysis (SEM-EDX). showed that the optimum dye removal was obtained at 80 mg/L. followed Freundlich model. thermodynamics occurred endothermically, wheraas positive value entropy indicated a high level disorder for both dyes. Furthermore, FTIR, XRD, SEM-EDX pillarization successfully well occurred, it could be concluded pillared better process than Red.