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Euler – lagrange CFD simulation of a gas – liquid fluidized bed reactor for the mineralization of high - strength phenolic wastewaters / Rodrigo J. G. Lopes in Industrial & engineering chemistry research, Vol. 51 N° 26 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 8891-8902 Titre : Euler – lagrange CFD simulation of a gas – liquid fluidized bed reactor for the mineralization of high - strength phenolic wastewaters Type de document : texte imprimé Auteurs : Rodrigo J. G. Lopes, Auteur ; M.L.N. Perdigoto, Auteur ; Rosa M. Quinta-Ferreira, Auteur Année de publication : 2012 Article en page(s) : pp. 8891-8902 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Waste  water  Strength  Mineralization  Fluidized  bed  reactor  Computational  fluid  dynamics Résumé : A state-of-the-art Euler―Lagrange model was developed to simulate the ozonation of phenol-like pollutants in a bubble column reactor. First, several numerical simulations were performed to evaluate on how the bubble velocity and oxidant concentration can improve the detoxification of liquid effluents by noncatalytic ozonation. Second, the effect of inlet ozone velocity as well as the influence of inlet ozone concentration has been investigated comparatively under different process conditions. We found that the Eulerian―Lagrangian computations have correctly handled the experimental observations in the quasi-homogeneous flow regime both in terms of the gas―liquid velocity distributions and normalized pollutant concentration. The numerical confidence exhibited by the CFD simulations underlined the ozonation-based technology as one promising application to improve the environmental performance of bubble columns, which is typically operated under the low-interaction regimes, especially when the mass transfer of ozone is rate controlling and affects the mineralization rate. The interstitial flow maps have been successfully correlated with total organic carbon concentration profles as function of inlet ozone velocities and concentrations. Moreover, the multiphase CFD framework gathered positively the mixing degree induced by different inlet bubble velocities as demonstrated by the total organic carbon concentration mappings and experimental conversion data. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107444 [article] Euler – lagrange CFD simulation of a gas – liquid fluidized bed reactor for the mineralization of high - strength phenolic wastewaters [texte imprimé] / Rodrigo J. G. Lopes, Auteur ; M.L.N. Perdigoto, Auteur ; Rosa M. Quinta-Ferreira, Auteur . - 2012 . - pp. 8891-8902. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 26 (Juillet 2012) . - pp. 8891-8902 Mots-clés : Waste  water  Strength  Mineralization  Fluidized  bed  reactor  Computational  fluid  dynamics Résumé : A state-of-the-art Euler―Lagrange model was developed to simulate the ozonation of phenol-like pollutants in a bubble column reactor. First, several numerical simulations were performed to evaluate on how the bubble velocity and oxidant concentration can improve the detoxification of liquid effluents by noncatalytic ozonation. Second, the effect of inlet ozone velocity as well as the influence of inlet ozone concentration has been investigated comparatively under different process conditions. We found that the Eulerian―Lagrangian computations have correctly handled the experimental observations in the quasi-homogeneous flow regime both in terms of the gas―liquid velocity distributions and normalized pollutant concentration. The numerical confidence exhibited by the CFD simulations underlined the ozonation-based technology as one promising application to improve the environmental performance of bubble columns, which is typically operated under the low-interaction regimes, especially when the mass transfer of ozone is rate controlling and affects the mineralization rate. The interstitial flow maps have been successfully correlated with total organic carbon concentration profles as function of inlet ozone velocities and concentrations. Moreover, the multiphase CFD framework gathered positively the mixing degree induced by different inlet bubble velocities as demonstrated by the total organic carbon concentration mappings and experimental conversion data. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26107444