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Free-radical-induced degradation of aqueous polyethylene Oxide by UV/H2O2 / Samira Ghafoori in Industrial & engineering chemistry research, Vol. 51 N° 46 (Novembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 46 (Novembre 2012) . - pp. 14980–14993 Titre : Free-radical-induced degradation of aqueous polyethylene Oxide by UV/H2O2 : Experimental design, reaction mechanisms, and kinetic modeling Type de document : texte imprimé Auteurs : Samira Ghafoori, Auteur ; Mehrab Mehrvar, Auteur ; Philip K. Chan, Auteur Année de publication : 2013 Article en page(s) : pp. 14980–14993 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Polyethylene  Oxide  Kinetic Résumé : The advanced oxidation of aqueous polyethylene oxide (PEO) is studied using the UV/H2O2 process in a batch recirculation photoreactor. The response surface methodology (RSM), combined with quadratic programming, is used for the experimental design, statistical analysis, and optimization of the process. In the second part, a detailed mathematical model is developed to predict the total organic carbon (TOC) removal as a function of time. Continuous distribution kinetics is applied to establish the kinetic model for the photodegradation of PEO. The model is validated at different influential operating conditions using experimental data obtained by a recirculating batch photoreactor. An excellent agreement between the model predictions and the experimental data is confirmed for all experimental conditions. Also, the intrinsic rate constants are estimated using an optimization algorithm. The model provides a good insight into the free-radical-induced degradation mechanisms and kinetics that could be considered for the process optimization. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3005995 [article] Free-radical-induced degradation of aqueous polyethylene Oxide by UV/H2O2 : Experimental design, reaction mechanisms, and kinetic modeling [texte imprimé] / Samira Ghafoori, Auteur ; Mehrab Mehrvar, Auteur ; Philip K. Chan, Auteur . - 2013 . - pp. 14980–14993. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 46 (Novembre 2012) . - pp. 14980–14993 Mots-clés : Polyethylene  Oxide  Kinetic Résumé : The advanced oxidation of aqueous polyethylene oxide (PEO) is studied using the UV/H2O2 process in a batch recirculation photoreactor. The response surface methodology (RSM), combined with quadratic programming, is used for the experimental design, statistical analysis, and optimization of the process. In the second part, a detailed mathematical model is developed to predict the total organic carbon (TOC) removal as a function of time. Continuous distribution kinetics is applied to establish the kinetic model for the photodegradation of PEO. The model is validated at different influential operating conditions using experimental data obtained by a recirculating batch photoreactor. An excellent agreement between the model predictions and the experimental data is confirmed for all experimental conditions. Also, the intrinsic rate constants are estimated using an optimization algorithm. The model provides a good insight into the free-radical-induced degradation mechanisms and kinetics that could be considered for the process optimization. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3005995