This work concerns the application of treated montmorillonite clay in the adsorption of Aniline as an organic pollutant in the wastewater. The characteristics of clay were evaluated by X-ray Fluorescence (XRF), X-ray diffraction (XRD) patterns, Fourier-transform infrared spectroscopy (FTIR) and Thermogravimetric Analysis (TGA). Additionally, the effect of different factors such as type of treatment, adsorbent dosage, contact time, solution temperature and pH were studied. The experimental data was evaluated by two kinetic models; pseudo-first and pseudo-second order. The results indicated that the adsorption followed pseudo-second-order models with coefficient R2 = 0.9928. The equilibrium time of Aniline was obtained after 3h. The thermodynamic parameters refer to the adsorption of Aniline on modified clay was endothermic and chemisorption. Because of advantages such as the abundance of clay and speed of the adsorption process, this method could be used to effectively remove aniline from wastewater.

The montmorillonite clay was modied as an adsorption material to remove Cd2+ and Pb2+ as inorganic pollutants in the wastewater. The characteristics of adsorbents were evaluated by X-ray Fluorescence (XRF), X-ray diffraction (XRD) patterns, Fourier-transform infrared spectroscopy (FTIR) and Thermogravimetric Analysis (TGA). Additionally, the impact of different parameters such as pH, contact time, adsorbent dosage, type of treatment and solution temperature were studied. The experimental data was investigated by two models kinetically of pseudo-rst-order and pseudo-second-order. The results indicated that the adsorption followed pseudosecond-order model with correlation R2 = 0.9995 and 0.9473 for Pb2+, Cd2+ respectively. The equilibrium time of heavy metals was obtained after 4h. The thermodynamic parameters indicated that adsorption of Pb2+ on modied clay was exothermic and spontaneous, while endothermic adsorption in Cd2+ adsorption case. The characteristic of the method, such as the adsorbent abundance and speed of the adsorption process was effective to remove of pollutants from wastewater