Mechanism of Ethanol Vapours Diffusion in Particles of Activated Carbons

Bobok, D. and Besedová, E. Mechanism of Ethanol Vapours Diffusion in Particles of Activated Carbons Chemical Papers, Vol.58, No. 1, 2004, 55-63

Document type: Článok z časopisu / Journal Article
Collection: Chemical papers  
 
Attached Files
Name Description MIMEType Size Downloads
n581a55.pdf 581a55.pdf application/pdf 216.65KB 0

Author(s) Bobok, D.
Besedová, E.
Title Mechanism of Ethanol Vapours Diffusion in Particles of Activated Carbons
Journal name Chemical Papers
Publication date 2004
Year available 2004
Volume number 58
Issue number 1
ISSN 0366-6352
Start page 55
End page 63
Place of publication Poland
Publisher Versita
Collection year 2004
Language english
Subject 290000 Engineering and Technology
290600 Chemical Engineering
Abstract/Summary A gravimetric sorption method was employed for the estimation of effective diffusion coefficients of ethanol vapours in particles of activated carbons Supersorbon HS-4, Dezorex FB-4, Silcarbon SIL-15 Extra. The course of the stepwise adsorption of ethanol from a stream of air and the course of the stepwise desorption of ethanol by a stream of air with lower content of ethanol compared with that used for adsorption, or by a stream of pure air were examined. From measured data the effective diffusion coefficient De was calculated for each adsorption and desorption step. The calculated values of De were ranging from 4.06x10−11 to 1.42x10−9m2s−1 and the dependences of De on adsorbate concentration were found for all activated carbons. The transport of ethanol vapours in pores of activated carbons proceeds via combination of Knudsen diffusion and surface diffusion.
 
 
User Comments
 
Access Statistics: 0 Abstract Views, 0 File Downloads Detailed Statistics
Created: Mon, 21 Dec 2009, 11:31:55 CET by Iveta Drtilová . Detailed History