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dc.creatorBenzaquén, Tamara
dc.creatorSapag, Karim
dc.creatorAlfano, Orlando
dc.creatorBarrera Díaz, Deicy
dc.creatorEimer, Griselda Alejandra
dc.identifier.citation1° Energy, Efficiency and Environmental Sustainability Conference (2017).es_ES
dc.description.abstractThe Fenton (Fe+2/H2O2) and photo-Fenton (Fe+2/H2O2/UV-Vis) reactions appear as very promising options for the oxidation of a wide range of recalcitrant organic pollutants. The application of these processes to wastewater treatment has aroused great interest mainly due to the fact that Fe is a widely available and nontoxic element, and hydrogen peroxide is easy to handle and the excess decomposes to environmentally safe products. Depending upon the phase, the Fenton and photo-Fenton reactions may be carried out under homogeneous or heterogeneous conditions. Nevertheless, it has been reported that the convencional homogeneous Fenton process based methods suffer from some drawbacks such as (i) the precipitation of soluble iron ions as hydroxide precipitate under neutral pH or alkaline conditions, (ii) the requirement of strict pH regulation around 2.8-3, and (iii) the requirement of post-treatment prior to discharge, such as neutralization of the treated solutions. Some of the drawbacks of the conventional Fenton process can be avoided by the use of a heterogeneous catalyst. Mesoporous materials have received widespread interest because of their good distribution of pore size/volumen; this allows hundreds of molecules to effectively diffuse to internal active sites, increasing their activity per unit of volume. In previous works, mesoporous materials have been modified like SBA-15 and KIT-6 with Fe showing excellent physical, optical and catalytic properties. In present work, mesoporous photocatalysts supporting Fe species on SBA-15 and KIT-6 were prepared, for their application in the photo-Fenton heterogeneous reaction for the degradation of the commercial herbicide (antrazina, ATZ) in water. The different mesostructured obtained were characterized by N2 adsorption-desorption at 77 K, TPR and UVVIS-RD. These iron- containing mesostructured materials have been successfully tested for the heterogeneous photo-Fenton degradation of ATZ aqueous solutions using UV-visible irradiation at room temperature and close to neutral pH. Depending on the dispersion and size of the different iron species, the nanocomposites showed different catalytic behaviors. The results showed that the Fe/SBA-15(10) and Fe/KIT-6(5) catalysts exhibited the highest activities. Thus, the high performance of these materials indicates that the heterogeneous via of photo-Fenton process can also be efficiently employed to treat wastewaters containing pollutants such as herbicides, in order to reduce them to simpler and less toxic molecules.es_ES
dc.rights.uriAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.subjectHeterogeneous photo-fentones_ES
dc.titleNano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phasees_ES
dc.rights.holderEimer, Griselda Alejandraes_ES
dc.description.affiliationFil: Benzaquén, Tamara. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.es_ES
dc.description.affiliationFil: Sapag, Karim. Universidad Nacional de San Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Aplicada: Dr. Jorge Andres Zgrablich. Laboratorio de Sólidos Porosos; Argentina.es_ES
dc.description.affiliationFil: Alfano, Orlando. Universidad Nacional del Litoral. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina.es_ES
dc.description.affiliationFil: Barrera Díaz, Deicy. Universidad Nacional de San Luis. Instituto de Física Aplicada. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es_ES
dc.description.affiliationFil: Eimer, Griselda Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.es_ES
dc.rights.useNo comercial. Sólo de uso académico.es_ES

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