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Optimization and modeling of photocatalytic degradation of Azo dye using a response surface methodology (RSM) based on the central composite design with immobilized titania nanoparticles / Mohammad Vaez 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. 4199–4207 Titre : Optimization and modeling of photocatalytic degradation of Azo dye using a response surface methodology (RSM) based on the central composite design with immobilized titania nanoparticles Type de document : texte imprimé Auteurs : Mohammad Vaez, Auteur ; Abdolsamad Zarringhalam Moghaddam, Auteur ; Somayeh Alijani, Auteur Année de publication : 2012 Article en page(s) : pp. 4199–4207 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Nanoparticle  Design  Composite  material  Azo  dye  Photochemical  degradation  Modeling  Optimization Résumé : The experimental design methodology was used to model and optimize the operational parameters of the photocatalytic degradation of Acid Red 73 using immobilized TiO2 nanoparticles. Four experimental parameters were chosen as independent variables: pH, initial dye concentration, H2O2 concentration, and anion concentration. A multivariate experimental design was used to establish a quadratic model as a functional relationship between the efficiency of Acid Red 73 degradation (response) and four independent variables. The degradation efficiency was significantly affected by the initial dye concentration and the pH. The optimal values of the parameters were found to be a pH of 3, an initial dye concentration of 25 mg/L, an H2O2 concentration of 0.5 mg/L, and an anion concentration of 0.69 mg/L. The degradation efficiency approached 92.24% under optimal conditions. Regression analysis with an R2 value of 0.9785 indicated a satisfactory correlation between the experimental data and predicted values. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25655628 [article] Optimization and modeling of photocatalytic degradation of Azo dye using a response surface methodology (RSM) based on the central composite design with immobilized titania nanoparticles [texte imprimé] / Mohammad Vaez, Auteur ; Abdolsamad Zarringhalam Moghaddam, Auteur ; Somayeh Alijani, Auteur . - 2012 . - pp. 4199–4207. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 11 (Mars 2012) . - pp. 4199–4207 Mots-clés : Nanoparticle  Design  Composite  material  Azo  dye  Photochemical  degradation  Modeling  Optimization Résumé : The experimental design methodology was used to model and optimize the operational parameters of the photocatalytic degradation of Acid Red 73 using immobilized TiO2 nanoparticles. Four experimental parameters were chosen as independent variables: pH, initial dye concentration, H2O2 concentration, and anion concentration. A multivariate experimental design was used to establish a quadratic model as a functional relationship between the efficiency of Acid Red 73 degradation (response) and four independent variables. The degradation efficiency was significantly affected by the initial dye concentration and the pH. The optimal values of the parameters were found to be a pH of 3, an initial dye concentration of 25 mg/L, an H2O2 concentration of 0.5 mg/L, and an anion concentration of 0.69 mg/L. The degradation efficiency approached 92.24% under optimal conditions. Regression analysis with an R2 value of 0.9785 indicated a satisfactory correlation between the experimental data and predicted values. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25655628