The dynamic adsorption of HA on oxidized activated carbons is
shown in Fig. 4. The adsorption increased rapidly in the beginning until equilibrium was reached at about 300 min. The initial quicker rate
of HA adsorption may be due to the large number of adsorption sites
available for adsorption and the following decrease in adsorption rate
is probably due to the saturation of the active sites and attainment of
equilibrium