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Measurement and Prediction of the Adsorption of Binary Mixtures of Organic Vapours on Activated Carbon

Authors :
Jufang Wu
Zili Xie
Kunmin Guo
Ola Claesson
Source :
Adsorption Science & Technology, Vol 19 (2001)
Publication Year :
2001
Publisher :
SAGE Publications, 2001.

Abstract

This paper describes a modified headspace method for measuring the adsorption equilibrium of mixtures of organic vapours. The advantage of the method relative to the ordinary headspace method is the shorter time needed to reach adsorption equilibrium. The adsorption isotherms of benzene, hexane and pentane on activated carbons were acquired quickly and easily using this method. The method has also been used to measure the binary equilibrium data of benzene–hexane, benzene–pentane and hexane–pentane mixtures on three types of activated carbon. The ‘Ideal Adsorbed Solution Theory’ (IAST) was used to predict the binary adsorption equilibria from the adsorption isotherms for the single components. Good agreement was obtained between prediction and measurement for the total amount of components adsorbed, as well as for the ratio of compounds in the adsorbed phase. The small deviation noted was probably a result of using the Freundlich adsorption isotherm in IAST modelling.

Details

Language :
English
ISSN :
02636174 and 20484038
Volume :
19
Database :
Directory of Open Access Journals
Journal :
Adsorption Science & Technology
Publication Type :
Academic Journal
Accession number :
edsdoj.21ca3e3e42cd40fe92c61ff2d7a63b35
Document Type :
article
Full Text :
https://doi.org/10.1260/0263617011494547