طراحی و سنتز نانوکامپوزیت سرامیکی بر بستر گاما آلومینای اصلاح شده به منظور حذف آلاینده‎های آلی از پساب

In the present study, three-component alumina-chitosan-clay nanocomposite (Al/Cs/C) using in situ polymerization method was evaluated as an efficient and a low-cost adsorbent for the removal of methyl orange dye as an anionic contaminant from aqueous solutions. Activated alumina is a porous mineral adsorbent that was selected as the substrate of the nanocomposite. In order to improve the physical properties of alumina and make an environmentally friendly adsorbent, chitosan biopolymer was used as a composite reinforcement. In continued, the clay particles were applied to increase the adsorption capacity of the adsorbent and modification of the composite. The various structural analysis including X ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM) were evaluated to study the morphology of the fabricated samples. The highest adsorption capacity for the prepared adsorbent was 133.33 mg/g, according to Langmuir isotherm. There is a good agreement between the pseudo second order kinetics and the experimental data.