Modelling of Gas Phase Adsorption on Activated Carbon. I. Experiment and Equilibrium Model

Besedova, E., Bobok, D., Bafrncova, S. and Steltenpohl, P. Modelling of Gas Phase Adsorption on Activated Carbon. I. Experiment and Equilibrium Model Chemical Papers, Vol.58, No. 6, 2004, 391-396

Document type: ńĆl√°nok z ńćasopisu / Journal Article
Collection: Chemical papers  
 
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Author(s) Besedova, E.
Bobok, D.
Bafrncova, S.
Steltenpohl, P.
Title Modelling of Gas Phase Adsorption on Activated Carbon. I. Experiment and Equilibrium Model
Journal name Chemical Papers
Publication date 2004
Year available 2004
Volume number 58
Issue number 6
ISSN 0366-6352
Start page 391
End page 396
Place of publication Poland
Publisher Versita
Collection year 2004
Language english
Subject 290000 Engineering and Technology
290600 Chemical Engineering
Abstract/Summary The course of breakthrough curve of acetone and cumene vapours mixture from a stream of nitrogen on a fixed bed of activated carbon Dezorex DB1 was measured at ambient temperature. During the process a competitive adsorption occurs, whereby acetone as the less adsorbing component was displaced by cumene. Mathematical models describing the course of equilibrium adsorption for isothermal and nonisothermal conditions were developed and used. The modified Langmuir isotherm for a two-component mixture was applied to describe the adsorption equilibrium. Experimental breakthrough curve was compared to the curves computed by equilibrium isothermal and nonisothermal models. The breakthrough point of acetone on a fixed bed of activated carbon of a length 12 cm occurred after 55 min of contact time. According to the equilibrium nonisothermal model and isothermal model the breakthrough time of about 80 min and 95 min was calculated, respectively. The model breakthrough curves are much steeper. It can be expected that after involving the resistance against mass transfer into the model the shape of the model breakthrough curves will not be so steep.
 
 
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