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Removal of N-methyl-2-pyrrolidone by photocatalytic degradation in a batch reactor / Alireza Zolfaghari in Industrial & engineering chemistry research, Vol. 50 N° 16 (Août 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 16 (Août 2011) . - pp. 9569-9576 Titre : Removal of N-methyl-2-pyrrolidone by photocatalytic degradation in a batch reactor Type de document : texte imprimé Auteurs : Alireza Zolfaghari, Auteur ; Hamid Reza Mortaheb, Auteur ; Fatemeh Meshkini, Auteur Année de publication : 2011 Article en page(s) : pp. 9569-9576 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Reactor  Batchwise  Photochemical  degradation Résumé : Photocatalytic degradation of N-methyl-2-pyrrolidone (NMP) was investigated in an aerated UV/TiO2 batch system. The effects of TiO2 photocatalyst loading, temperature, pH, initial concentration, and the type of gas phase on the reaction rate were ascertained, and the optimum conditions for the maximum degradation rate were determined. The results showed that photocatalytic degradation ofNMP is strongly influenced by these parameters. The optimum TiO2 loading, which provides enough surface area for reaction without irradiation loss due to scattering of UV light, was found to be 0.1 wt %. It was revealed that due to bilateral effect of temperature on the process, the maximum oxidation rate (0.22 min―1) is obtained at 45 °C. The highest photodegradation reaction rate is obtained in neutral or slightly acidic condition rather than in extreme acidic or alkaline range. The pseudo-first-order reaction rate expression based on Langmuir―Hinshelwood model can reasonably simulate the photocatalytic degradation process. The optimum values for TiO2 photocatalyst loading, temperature, and pH were confirmed by economic factor analysis based on electrical energy consumption. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24425199 [article] Removal of N-methyl-2-pyrrolidone by photocatalytic degradation in a batch reactor [texte imprimé] / Alireza Zolfaghari, Auteur ; Hamid Reza Mortaheb, Auteur ; Fatemeh Meshkini, Auteur . - 2011 . - pp. 9569-9576. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 16 (Août 2011) . - pp. 9569-9576 Mots-clés : Reactor  Batchwise  Photochemical  degradation Résumé : Photocatalytic degradation of N-methyl-2-pyrrolidone (NMP) was investigated in an aerated UV/TiO2 batch system. The effects of TiO2 photocatalyst loading, temperature, pH, initial concentration, and the type of gas phase on the reaction rate were ascertained, and the optimum conditions for the maximum degradation rate were determined. The results showed that photocatalytic degradation ofNMP is strongly influenced by these parameters. The optimum TiO2 loading, which provides enough surface area for reaction without irradiation loss due to scattering of UV light, was found to be 0.1 wt %. It was revealed that due to bilateral effect of temperature on the process, the maximum oxidation rate (0.22 min―1) is obtained at 45 °C. The highest photodegradation reaction rate is obtained in neutral or slightly acidic condition rather than in extreme acidic or alkaline range. The pseudo-first-order reaction rate expression based on Langmuir―Hinshelwood model can reasonably simulate the photocatalytic degradation process. The optimum values for TiO2 photocatalyst loading, temperature, and pH were confirmed by economic factor analysis based on electrical energy consumption. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24425199