Adsorption of Methyl Green dye onto MCM-41: equilibrium, kinetics and thermodynamic studies

The nanoporous material, Mobil Composition of Matter No. 41 (MCM-41), was prepared and characterized in order to adsorb methyl green (MG) dye from artificial wastewater by adsorption method. The MCM-41 was characterized through X- ray diffraction spectroscopy, scanning electron microscopy, Fourier transform infrared spectroscopy and Brunauer-Emmett-Teller. The preliminary results were examined for adsorbent mesoporous material samples, in order to estimate the best states for the adsorption of the model dye: adsorbent dose (0.00-80.04 g) contact time (8-150 min), temperature (25 degrees C-45 degrees C), and initial concentration of dye (10-50 mg/L) where the removal efficiency of MG dye under optimum conditions was around 99%. The outcomes were elucidating that the adsorption isotherms can be quite befitting by the Temkin model, with a coefficient of determination 0.9669. The adsorption kinetics of MG onto adsorbate was strongly represented by a pseudo-second-order kinetic model.