عنوان مقاله [English]
نویسندگان [English]چکیده [English]
The kinetic model of the pseudo-second order is a useful model for assessing the mechanism of the adsorption. This model is stated by linear and non-linear methods. The linear method is written by linear regression as four forms and non-linear method is done by trial and error method using Solver add-In in Microsoft Excel. The comparison and assessment of the correlation coefficient (r2) show the best accordance with kinetic model. In current work, the kinetic of pseudo-second order for the adsorption of Co (II) from aqueous solutions was studied by linear and non-linear methods. The results showed that the different values of the correlation coefficient were achieved for four forms. First type of the pseudo-second order kinetic (Ho model) showed the most value of the correlation coefficient. The results showed that non-linear method has the better accordance with experimental data than linear method.