Catalytic wet peroxide oxidation technique for the removal of decontaminating agents ethylenediaminetetraacetic acid and oxalic acid from aqueous solution using efficient fenton type Fe-MCM-41 mesoporous materials / Narasimhan Gokulakrishnan in Industrial & engineering chemistry research, Vol. 48 N°3 (Février 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1556–1561 Titre : Catalytic wet peroxide oxidation technique for the removal of decontaminating agents ethylenediaminetetraacetic acid and oxalic acid from aqueous solution using efficient fenton type Fe-MCM-41 mesoporous materials Type de document : texte imprimé Auteurs : Narasimhan Gokulakrishnan, Auteur ; Arumugam Pandurangan, Auteur ; Pradeep Kumar Sinha, Auteur Année de publication : 2009 Article en page(s) : p. 1556–1561 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Peroxide Oxidation -- catalytic Ethylenediaminetetraacetic acid Oxalic Waste treatment Résumé : Catalytic wet peroxide oxidation (CWPO) of organic contaminants may have a possible path for the treatment of decontamination waste containing chelating agents that cause a complex with radioactive cations leading to interferences in their removal by various techniques and may pose a hazard to the environment. The aim of the present work was to synthesize and characterize the mesoporous Fe-MCM-41 with various Si/Fe ratios for evaluating the removal of organic contaminants such as ethylenediaminetetraacetic acid (EDTA) and oxalic acid in aqueous solution. The influence of reaction parameters such as time, pH, and temperature was studied to achieve efficient removal of organic contaminant. Among the catalysts studied, Fe-MCM-41 (Si/Fe = 25) provides high-percentage removal of total organic carbon in aqueous solution. The mineralization of organic contaminants was found to be higher in heterogeneous catalysis than homogeneous catalysis (Fe3+). Further, after the reaction, only a minimum percentage (2%) of Fe was leaching from Fe-MCM-41 under optimized condition and the catalyst remained unaltered in its structure. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800907y [article] Catalytic wet peroxide oxidation technique for the removal of decontaminating agents ethylenediaminetetraacetic acid and oxalic acid from aqueous solution using efficient fenton type Fe-MCM-41 mesoporous materials [texte imprimé] / Narasimhan Gokulakrishnan, Auteur ; Arumugam Pandurangan, Auteur ; Pradeep Kumar Sinha, Auteur . - 2009 . - p. 1556–1561. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1556–1561 Mots-clés : Peroxide Oxidation -- catalytic Ethylenediaminetetraacetic acid Oxalic Waste treatment Résumé : Catalytic wet peroxide oxidation (CWPO) of organic contaminants may have a possible path for the treatment of decontamination waste containing chelating agents that cause a complex with radioactive cations leading to interferences in their removal by various techniques and may pose a hazard to the environment. The aim of the present work was to synthesize and characterize the mesoporous Fe-MCM-41 with various Si/Fe ratios for evaluating the removal of organic contaminants such as ethylenediaminetetraacetic acid (EDTA) and oxalic acid in aqueous solution. The influence of reaction parameters such as time, pH, and temperature was studied to achieve efficient removal of organic contaminant. Among the catalysts studied, Fe-MCM-41 (Si/Fe = 25) provides high-percentage removal of total organic carbon in aqueous solution. The mineralization of organic contaminants was found to be higher in heterogeneous catalysis than homogeneous catalysis (Fe3+). Further, after the reaction, only a minimum percentage (2%) of Fe was leaching from Fe-MCM-41 under optimized condition and the catalyst remained unaltered in its structure. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800907y

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