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Comprehensive study on wastewater treatment using photo - impinging streams reactor / Sayed Javid Royaee in Industrial & engineering chemistry research, Vol. 51 N° 11 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4152–4160 Titre : Comprehensive study on wastewater treatment using photo - impinging streams reactor : Residence time distribution and reactor modeling Type de document : texte imprimé Auteurs : Sayed Javid Royaee, Auteur ; Morteza Sohrabi, Auteur Année de publication : 2012 Article en page(s) : pp. 4152–4160 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Wastewater  treatment  Streams  reactor Résumé : A photo impinging streams reactor was employed to study the degradation of phenol in aqueous solutions applying titanium dioxide nanoparticles as the reaction catalyst. The central composite experimental design method was applied to determine the pertinent operating parameters of such a process. These were phenol concentration, catalyst loading, pH of the slurry, and the feed flow rate. Residence time distribution (RTD) of the slurry phase within the reactor was measured using the impulse tracer method. A compartment model consisting of a number of mixed and plug flow regions was assigned to describe the flow pattern in the reactor. On the basis of such an arrangement and applying the Markov chains discrete time formulation, a three parameters model was derived for the RTD. The parameters of the theoretical RTD model were evaluated by comparing the latter with those determined experimentally. The RTD expression was applied in conjunction with the phenol degradation kinetic model to predict the apparent rate coefficient for such a reaction. The higher values observed for the apparent rate coefficient in impinging streams reactor than those available in the literature may be explained by the mass transfer limitations affecting the conventional reactors performance. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201384s [article] Comprehensive study on wastewater treatment using photo - impinging streams reactor : Residence time distribution and reactor modeling [texte imprimé] / Sayed Javid Royaee, Auteur ; Morteza Sohrabi, Auteur . - 2012 . - pp. 4152–4160. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4152–4160 Mots-clés : Wastewater  treatment  Streams  reactor Résumé : A photo impinging streams reactor was employed to study the degradation of phenol in aqueous solutions applying titanium dioxide nanoparticles as the reaction catalyst. The central composite experimental design method was applied to determine the pertinent operating parameters of such a process. These were phenol concentration, catalyst loading, pH of the slurry, and the feed flow rate. Residence time distribution (RTD) of the slurry phase within the reactor was measured using the impulse tracer method. A compartment model consisting of a number of mixed and plug flow regions was assigned to describe the flow pattern in the reactor. On the basis of such an arrangement and applying the Markov chains discrete time formulation, a three parameters model was derived for the RTD. The parameters of the theoretical RTD model were evaluated by comparing the latter with those determined experimentally. The RTD expression was applied in conjunction with the phenol degradation kinetic model to predict the apparent rate coefficient for such a reaction. The higher values observed for the apparent rate coefficient in impinging streams reactor than those available in the literature may be explained by the mass transfer limitations affecting the conventional reactors performance. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201384s