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Effect of reaction and adsorption at the surface of porous pellets on the concentration of slurries / Mauricio Sales-Cruz in Industrial & engineering chemistry research, Vol. 51 N° 39 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 39 (Octobre 2012) . - pp. 12739-12750 Titre : Effect of reaction and adsorption at the surface of porous pellets on the concentration of slurries Type de document : texte imprimé Auteurs : Mauricio Sales-Cruz, Auteur ; Francisco J. Valdés-Parada, Auteur ; Benoît Goyeau, Auteur Année de publication : 2012 Article en page(s) : pp. 12739-12750 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Porous  material  Pellet  Adsorption Résumé : In this work, we analyze the influence of interfacial reaction and adsorption processes over the predictions of the unsteady average macroscopic concentrations in slurries. The isothermal mass transport model consists of the equations for the well-mixed fluid and the one corresponding to the pellets. The latter consist of porous media where first-order reaction kinetics and linear adsorption take place. The interfacial flux boundary condition considers the mass transfer resistance in the fluid, as well as superficial reaction and accumulation terms. The model solution is carried out by means of Fourier series expansions. It is shown that, unless the adsorption and reaction at the surface of the porous pellets are much more intense than in the bulk, the error introduced by not considering these interfacial phenomena is negligible. The results from this work are relevant for improving design and control applications of slurries involving fast reactions or strong adsorption. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26419229 [article] Effect of reaction and adsorption at the surface of porous pellets on the concentration of slurries [texte imprimé] / Mauricio Sales-Cruz, Auteur ; Francisco J. Valdés-Parada, Auteur ; Benoît Goyeau, Auteur . - 2012 . - pp. 12739-12750. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 39 (Octobre 2012) . - pp. 12739-12750 Mots-clés : Porous  material  Pellet  Adsorption Résumé : In this work, we analyze the influence of interfacial reaction and adsorption processes over the predictions of the unsteady average macroscopic concentrations in slurries. The isothermal mass transport model consists of the equations for the well-mixed fluid and the one corresponding to the pellets. The latter consist of porous media where first-order reaction kinetics and linear adsorption take place. The interfacial flux boundary condition considers the mass transfer resistance in the fluid, as well as superficial reaction and accumulation terms. The model solution is carried out by means of Fourier series expansions. It is shown that, unless the adsorption and reaction at the surface of the porous pellets are much more intense than in the bulk, the error introduced by not considering these interfacial phenomena is negligible. The results from this work are relevant for improving design and control applications of slurries involving fast reactions or strong adsorption. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26419229