Generalized Model of Adsorption Equilibria Prediction for CO2 on Carbonaceous Adsorbents
American Journal of Chemical Engineering
Volume 4, Issue 2, March 2016, Pages: 46-51
Received: Apr. 8, 2016; Published: Apr. 9, 2016
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Kuerbanjiang Nuermaiti, Department of Chemistry, Tongji University, Shanghai, China
Ming Li, Department of Chemistry, Tongji University, Shanghai, China
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The carbon molecular sieve CMS-200 and activated carbon Yigao-A have been adopted as adsorbents for the study of CO2 adsorption capture. The pore size distributions of both adsorbents were characterized by the modified H-K method. Adsorption isotherms of CO2 on the carbon molecular sieve CMS-200 and activated carbon Yigao-A were measured by the gravimetric method (Hiden, IGA-001) in the temperature region of 253.15-393.15 K and pressure region of 0-2 MPa. The Henry’s law constants of adsorption equilibria for CO2 were estimated using the Virial equation. The Ruthven’s generalized model was applied to analyze the experimental data on the basis of the values of the Henry’s law constants. The investigation demonstrates that the Ruthven’s generalized model not only is useful to describe the adsorption equilibria for CO2 on non-porous homogeneous carbonaceous adsorbents in the subcritical region, but also is reliable to predict the adsorption equilibrium data for CO2 on carbonaceous adsorbents with the uniform pore size distribution and the wide pore size distribution from the subcritical region to the supercritical region.
CO2, Adsorption, Prediction, Henry’s Law Constant, Generalized Model
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Kuerbanjiang Nuermaiti, Ming Li, Generalized Model of Adsorption Equilibria Prediction for CO2 on Carbonaceous Adsorbents, American Journal of Chemical Engineering. Vol. 4, No. 2, 2016, pp. 46-51. doi: 10.11648/j.ajche.20160402.13
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