Different adsorption isotherms of carbon dioxide on raw and impregnated activated carbon
Special Symposium - Environmental Protection & Sustainability
Environmental Protection & Sustainability (EPS - Poster)
Keywords: adsorption isotherm, activated carbon, carbon dioxide, impregnation
Different adsorption isotherms of carbon dioxide on raw and impregnated
activated carbon
Mohammad Reza Mehrnia(a,*), Mohammad Mehdi Montazer-Rahmati(a)
Mohammadhosein Safari(b), Hosein Delavari Amrei(a),
Amin Ghanizadeh(a)
(a) Department of Chemical Engineering, University of Tehran, Tehran, Iran
(b) Department of Chemistry, University of Provence, Marseille, France
The adsorption of CO2 on five raw activated carbon samples A, B, C, D, E and one modified activated carbon F, at sub-atmospheric pressures ranging from 300 to 1000(mbar) and ambient temperature has been investigated experimentally, using a vacuum adsorption apparatus, in order to get more information about the application of activated carbons for flue gas cleaning. The CO2 adsorption isotherms, on the above-mentioned five activated carbon samples, were measured volumetrically and the adsorption data fitted to different isotherm equations. The active ingredient impregnated in the activated carbon sample F show significant influence on the adsorption of CO2 and its volumes adsorbed on modified activated carbon sample F are all larger than that on the same raw activated carbon sample. On the other hand, the effect of physical parameters such as surface area and pore volume of activated carbon samples was determined to be infinitesimal. The Sips equation was the best model for fitting the adsorption data on raw activated carbon samples A, B, C while the Toth equation was the best fit for raw activated carbon sample D, and the Freundlich equation was the best model for raw and modified activated carbon samples E and F.
Presented Monday 17, 13:30 to 15:00, in session Environmental Protection & Sustainability (EPS - Poster) S-7P.
