The linear plot of t/qt versus t (Fig. 5a) for pseudo-second order equation is of high R2 values, as shown in Table 4. The better representation of adsorption kinetics was by the pseudo-second order kinetic model and the calculated qe values agree well with the experimental qe values for both FQs antibiotics (Table 3). This suggests that the adsorption of CIP and NOR on prepared carbon follows second-order kinetics. Several authors showed the successful application of pseudo-second order model for repre- sentation of experimental kinetics data of both CIP and NOR adsorption on agricultural wastes-based carbons [8,10].