Isosteric heat of adsorption for carbon dioxide on Biochar

Results of adsorption isotherm measurements for carbon dioxide on commercially available Biochar will be presented. Volumetric adsorption isotherms were measured at various temperatures between 273 and 315 K. The isosteric heat of adsorption for carbon dioxide on the Biochar has been obtained from these isotherms. We found that the isosteric heat of adsorption for carbon dioxide on the Biochar is of the order of 300 meV. These results will be discussed and compared with adsorption carbon dioxide on other carbon based porous materials.