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Degradation of methylene blue by heterogeneous fenton reaction using titanomagnetite at neutral pH values / Shijian Yang in Industrial & engineering chemistry research, Vol. 48 N° 22 (Novembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 9915–9921 Titre : Degradation of methylene blue by heterogeneous fenton reaction using titanomagnetite at neutral pH values : process and affecting factors Type de document : texte imprimé Auteurs : Shijian Yang, Auteur ; Hongping He, Auteur ; Daqing Wu, Auteur Année de publication : 2010 Article en page(s) : pp. 9915–9921 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Titanomagnetite  Methylene  blue Résumé : In this work, titanomagnetite was used as a heterogeneous Fenton catalyst for the degradation of methylene blue (MB). The degradation of MB on synthetic titanomagnetite at neutral pH values was studied in comparison with the adsorption of MB on titanomagnetite using UV−vis, FTIR, and the analyses of element C on titanomagnetite and DOC in reaction solution. Meanwhile, important factors affecting catalytic activity were investigated, that is, titanomagnetite load, H2O2 concentration, and reaction temperature. Titanomagnetite decomposed H2O2 yielding highly reactive hydroxyl radicals, and MB adsorbed on titanomagnetite was degraded. With the increases of titanomagnetite load, H2O2 concentration, and reaction temperature, the degradation of MB was promoted. Moreover, titanomagnetite was proved to be durable with a stable MB removal efficiency after five consecutive cycles. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900666b [article] Degradation of methylene blue by heterogeneous fenton reaction using titanomagnetite at neutral pH values : process and affecting factors [texte imprimé] / Shijian Yang, Auteur ; Hongping He, Auteur ; Daqing Wu, Auteur . - 2010 . - pp. 9915–9921. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 9915–9921 Mots-clés : Titanomagnetite  Methylene  blue Résumé : In this work, titanomagnetite was used as a heterogeneous Fenton catalyst for the degradation of methylene blue (MB). The degradation of MB on synthetic titanomagnetite at neutral pH values was studied in comparison with the adsorption of MB on titanomagnetite using UV−vis, FTIR, and the analyses of element C on titanomagnetite and DOC in reaction solution. Meanwhile, important factors affecting catalytic activity were investigated, that is, titanomagnetite load, H2O2 concentration, and reaction temperature. Titanomagnetite decomposed H2O2 yielding highly reactive hydroxyl radicals, and MB adsorbed on titanomagnetite was degraded. With the increases of titanomagnetite load, H2O2 concentration, and reaction temperature, the degradation of MB was promoted. Moreover, titanomagnetite was proved to be durable with a stable MB removal efficiency after five consecutive cycles. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900666b