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Photodegradation of bisphenol A in the montmorillonite KSF suspended solutions / Y. X. Liu in Industrial & engineering chemistry research, Vol. 47 N°19 (Octobre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7141–7146 Titre : Photodegradation of bisphenol A in the montmorillonite KSF suspended solutions Type de document : texte imprimé Auteurs : Y. X. Liu, Auteur ; X. Zhang, Auteur ; L. Guo, Auteur Année de publication : 2008 Article en page(s) : p. 7141–7146 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Montmorillonite  KSF  Heterogeneous  system  Bisphenol  A Résumé : The commercially available montmorillonite KSF is utilized as efficient acidic catalyst in organic synthesis chemistry. In this study it is used as a photoactive reagent in a heterogeneous system. A series of experiments of the degradation of bisphenol A (BPA) as a model organic pollutant in montmorillonite KSF suspended solutions under UV−vis irradiation (metal halide lamp, λ ≥ 365 nm) were investigated. It is found that BPA could be effectively photodegraded in suspension. The BPA photodegradation is dependent on the pH of the solution and dosage of clay minerals, and it is more effective for BPA to be degraded at pH 4; the degradation rate of BPA increased with the concentration of clays in the range of 0.5 g/L to 5 g/L. The photodegradation rate of BPA is fitted well into the Langmuir−Hinshelwood equation. Results also indicate that the carboxylate and dissolved oxygen could efficiently enhance the degradation rate, and the role of carboxylate in accelerating the photodegradation of BPA follows the order: pyruvate > oxalate > citrate. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800169c [article] Photodegradation of bisphenol A in the montmorillonite KSF suspended solutions [texte imprimé] / Y. X. Liu, Auteur ; X. Zhang, Auteur ; L. Guo, Auteur . - 2008 . - p. 7141–7146. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7141–7146 Mots-clés : Montmorillonite  KSF  Heterogeneous  system  Bisphenol  A Résumé : The commercially available montmorillonite KSF is utilized as efficient acidic catalyst in organic synthesis chemistry. In this study it is used as a photoactive reagent in a heterogeneous system. A series of experiments of the degradation of bisphenol A (BPA) as a model organic pollutant in montmorillonite KSF suspended solutions under UV−vis irradiation (metal halide lamp, λ ≥ 365 nm) were investigated. It is found that BPA could be effectively photodegraded in suspension. The BPA photodegradation is dependent on the pH of the solution and dosage of clay minerals, and it is more effective for BPA to be degraded at pH 4; the degradation rate of BPA increased with the concentration of clays in the range of 0.5 g/L to 5 g/L. The photodegradation rate of BPA is fitted well into the Langmuir−Hinshelwood equation. Results also indicate that the carboxylate and dissolved oxygen could efficiently enhance the degradation rate, and the role of carboxylate in accelerating the photodegradation of BPA follows the order: pyruvate > oxalate > citrate. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800169c