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Adsorption isotherms of m-xylene on activated carbon: measurements and correlation with different models

Identifieur interne : 001F97 ( Main/Merge ); précédent : 001F96; suivant : 001F98

Adsorption isotherms of m-xylene on activated carbon: measurements and correlation with different models

Auteurs : J. Benkhedda [France] ; J.-N. Jaubert [France] ; D. Barth [France] ; L. Perrin [France] ; M. Bailly [France]

Source :

Journal of chemical thermodynamics [ 0021-9614 ] ; 2000.

RBID : Pascal:00-0240945

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Adsorption gaz solide, Charbon actif, m-Xylène, Composé organique volatil, Composé benzénique, Isotherme adsorption, Isotherme Freundlich, Isotherme Langmuir, Isotherme Dubinin Radushkevich, Appareil mesure, Méthode corrélation, Hydrocarbure, Microbalance.
Wicri :
- topic : Hydrocarbure.

English descriptors

KwdEn :
- Activated carbon, Adsorption isotherm, Benzenic compound, Correlation method, Dubinin Radushkevich isotherm, Experimental study, Freundlich isotherm, Gas solid adsorption, Hydrocarbon, Langmuir isotherm, Measuring instrument, Volatile organic compound, m-Xylene.

Abstract

In this study, adsorption isotherms of m-xylene on activated carbon were measured by time integration of the breakthrough curves at T = (298.15, 308.15, 318.15, and 333.15) K using home-made apparatus developed for this purpose. At the temperature 333.15 K, isotherms were also measured using a microbalance in order to check the accuracy of the proposed apparatus. As expected, in keeping with the principle of Le Chatelier, the m-xylene loadings were observed to decrease with increasing temperature. Activated carbon was used as the adsorbent because it typically exhibits high adsorption capacities and shows potential as an adsorbent to effectively remove volatile organic compounds (VOCs) such as m-xylene. In a second step, the experimental data obtained were correlated with different existing adsorption isotherm models such as the Langmuir model, the Freundlich model, and the Dubinin equation. The Langmuir model was found to be well adapted to describe the adsorption of m-xylene onto activated carbon.

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Le document en format XML

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<front><div type="abstract" xml:lang="en">In this study, adsorption isotherms of m-xylene on activated carbon were measured by time integration of the breakthrough curves at T = (298.15, 308.15, 318.15, and 333.15) K using home-made apparatus developed for this purpose. At the temperature 333.15 K, isotherms were also measured using a microbalance in order to check the accuracy of the proposed apparatus. As expected, in keeping with the principle of Le Chatelier, the m-xylene loadings were observed to decrease with increasing temperature. Activated carbon was used as the adsorbent because it typically exhibits high adsorption capacities and shows potential as an adsorbent to effectively remove volatile organic compounds (VOCs) such as m-xylene. In a second step, the experimental data obtained were correlated with different existing adsorption isotherm models such as the Langmuir model, the Freundlich model, and the Dubinin equation. The Langmuir model was found to be well adapted to describe the adsorption of m-xylene onto activated carbon.</div>
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Adsorption isotherms of m-xylene on activated carbon: measurements and correlation with different models

Adsorption isotherms of m-xylene on activated carbon: measurements and correlation with different models

Source :

Descripteurs français

English descriptors

Abstract

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