Abstract The present study as designed to assess the CO 2 and N adsorption isotherms on activated carbon (AC). AC was characterized with SEM, XRD isotherm. experiments are performed at 298, 308 328 K modelled by Langmuir model. preferred selectivity ( α CO2/N2 ) obtained use of properties Henry coefficient H found from virial equation. thermodynamic analysis which include entropy loss (ΔS), Gib...