عنوان مقاله [English]
Polyaniline and their nanocomposites were prepared by using chemical oxidative polymerization method in the presence of potassium iodate as oxidant. In this research, morphology and chemical structure of polyaniline/polystyrene and polyaniline/polyvinyl chloride was studied. Also, the capability of these nanocomposites to removal of zinc & lead cations from aqueous solution was studied. In order to adsorption of metal cations from aqueous solution, batch system was used & various experimental parameters such as ph, cationic pollutants dosage and contact time was evaluated. Results indicated that the highest adsorption rate for zinc and lead cations by polyaniline/ polyvinylchloride adsorbent was calculated 95.86 and 93.4, respectively. The optimum condition for lead cation adsorption were achieved using a polyaniline/polyvinyl chloride adsorbent at pH 7, a cation concentration of 100 mg/L and contact time of 20 minutes. Also, the study of adsorption isotherm equations has shown that the Freundlich equation is better compatibility with experimental data.