Experimental Evaluation of CO2/N2 Mixture Separation by Multi-multi-walled Carbon Nanotube

S. Khalili, A.A. Ghoreyshi, M. Jahanshahi and M. Davoodi Chemical Engineering Department, Babol University of Technology, Babol, Iran

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In order to examine the ability of multi-multi-walled carbon nanotube for CO2 separation from flue gas, uptakes of CO2 and N2 were measured at temperatures of 288 K, 298 K and 308 K over the pressure range 1 to 40 bar using volumetric method. The experimental data was fitted by the Langmuir and Frendlich model isotherms. The same shape of isotherms introduced a common mechanism of adsorption but the amount of CO2 adsorbed on multi-multi-walled carbon nanotube was 2.5 times higher than N2 adsorption which indicated the possibility of CO2 removal from flue gases using adsorption process with multi-multi-walled carbon nanotube as the adsorbent. Isosteric heat of adsorption was evaluated from a set of isotherms based on the Clausius-Clapeyron equation.

DOI: 10.12693/APhysPolA.123.230 PACS numbers: 61.46.Fg, 64.75.Jk, 66.30.Pa