Numerical study of non-isothermal adsorption of Naphthalene in supercritical CO2: behavior near critical point

Abstract : In this study, adsorption in a model binary mixture is investigated near the critical point in a side-heated cavity. The diverging behavior of the equilibrium constant and the Piston effect are taken into account and their influence on the adsorption process is pointed to. The modeling is based on numerical integration of the differential equations, considering the Navier-Stokes equations coupled with the energy and mass diffusion balances. By means of this model, the temperature, density and adsorbed concentration profiles are drawn at different times. Some fundamental concepts about the system’s response to the heating are illustrated. The results reveal that the adsorption process is influenced by the combined effect of several parameters, such as the gravity and the proximity to the critical point. In particular, the adsorbed amount exhibits a reversed dependency on the wall heating very close to the critical point, which confirms the complexity of such a process in binary systems near critical conditions.
Liste complète des métadonnées

Littérature citée [11 références]  Voir  Masquer  Télécharger

https://hal.archives-ouvertes.fr/hal-01369830
Contributeur : Isabelle Raspo <>
Soumis le : jeudi 6 avril 2017 - 10:59:19
Dernière modification le : jeudi 18 janvier 2018 - 02:21:59
Document(s) archivé(s) le : vendredi 7 juillet 2017 - 12:40:48

Fichier

AcceptedManuscript.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Manel Wannassi, Isabelle Raspo. Numerical study of non-isothermal adsorption of Naphthalene in supercritical CO2: behavior near critical point. Journal of Supercritical Fluids, Elsevier, 2016, 117, pp.203-218. 〈10.1016/j.supflu.2016.06.020〉. 〈hal-01369830〉

Partager

Métriques

Consultations de la notice

167

Téléchargements de fichiers

58