Removal of from flue gases has become an effective way to mitigate the greenhouse gases, and adsorption is considered to be one of the methods. Adsorption of on locally available coconut fibre-based activated carbon has been investigated and compared with adsorbents like zeolite 13X, zeolite 5A, and zeolite 4A at a temperature ranging from 298 to 333 K and pressure up to 100 kPa. The adsorption process was simulated by considering a linear driving force for the overall mass transfer and diffusivity factor. It was observed that the simulated curves acceptably reproduce the experimental data for the different temperatures studied. The adsorption isotherms for the three adsorbents were obtained and equilibrium characters about both adsorbate and adsorbent were analysed based on Toth isotherm model.