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Application of the Adsorbate Pore Filling Correction Model to Diffusion of Ethanol Vapours in Activated Carbon

Author(s): Daniel Bobok | Eva Besedová | Kamil Sebeš, | Pavol Steltenpohl

Journal: Petroleum and Coal
ISSN 1337-7027

Volume: 46;
Issue: 1;
Start page: 41;
Date: 2004;
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Keywords: diffusion | mass transfer | ethanol | activated carbon

The model of adsorbate pore filling correction was applied to describe ethanol vapour diffusionfrom a stream of air in particles of activated carbon. The calculated values of pore diffusivity 'AB D wereranging from 1.06×10-6 to 2.60×10-6 m2 s-1. Transport of ethanol vapours in pores of activated carbonSupersorbon HS-4 proceeded via combination of Knudsen and surface diffusion. The values of effectivediffusivity De calculated from the pore diffusivity 'AB D varied from 3.13×10-11 to 2.461×10-10 m2 s-1 and adependence of De on adsorbate concentration was found.
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