The parameters of the isotherm models determined from the
regression analysis of experimental data were summarized in Table 5.
The results indicated that the Freundlich model was the best fit for the
experimental data while the maximum adsorption capacity was
determined from the Langmuir model. The adsorption capacities of oxidized
activated carbons for HA vary according to the sequence:
NBKOX b NBPOX b NBZOX b NBZCOX.