Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phase

Autores
Benzaquén, Tamara; Sapag, Karim; Alfano, Orlando; Barrera Díaz, Deicy Amparo; Eimer, Griselda Alejandra
Año de publicación
2017
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The 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.
Fil: Benzaquén, Tamara. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.
Fil: 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.
Fil: Alfano, Orlando. Universidad Nacional del Litoral. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina.
Fil: Barrera Díaz, Deicy Amparo. Universidad Nacional de San Luis. Instituto de Física Aplicada. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Eimer, Griselda Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.
Materia
Mesostructures
Heterogeneous photo-fenton
Herbicides
Degradation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2022-05-27T22:07:40Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/6505
Acceder
id RIAUTN_a1c001ec6659378231a01f3f390dadd5
oai_identifier_str oai:ria.utn.edu.ar:20.500.12272/6505
network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous PhaseBenzaquén, TamaraSapag, KarimAlfano, OrlandoBarrera Díaz, Deicy AmparoEimer, Griselda AlejandraMesostructuresHeterogeneous photo-fentonHerbicidesDegradationThe 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.Fil: Benzaquén, Tamara. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.Fil: 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.Fil: Alfano, Orlando. Universidad Nacional del Litoral. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina.Fil: Barrera Díaz, Deicy Amparo. Universidad Nacional de San Luis. Instituto de Física Aplicada. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Eimer, Griselda Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.2022-05-27T22:07:40Z2022-05-27T22:07:40Z2017info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciapdfapplication/pdf1° Energy, Efficiency and Environmental Sustainability Conference (2017).http://hdl.handle.net/20.500.12272/6505engenginfo:eu-repo/semantics/openAccess2022-05-27T22:07:40Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalEimer, Griselda AlejandraNo comercial. Sólo de uso académico.reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2026-10-01T12:00:52Zoai:ria.utn.edu.ar:20.500.12272/6505instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-10-01 12:00:52.398Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phase
title Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phase
spellingShingle Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phase
Benzaquén, Tamara
Mesostructures
Heterogeneous photo-fenton
Herbicides
Degradation
title_short Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phase
title_full Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phase
title_fullStr Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phase
title_full_unstemmed Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phase
title_sort Nano-Structured Catalysts Applied To Heterogeneous Photo-Fenton Process To Degrade Herbicides In Aqueous Phase
dc.creator.none.fl_str_mv Benzaquén, Tamara
Sapag, Karim
Alfano, Orlando
Barrera Díaz, Deicy Amparo
Eimer, Griselda Alejandra
author Benzaquén, Tamara
author_facet Benzaquén, Tamara
Sapag, Karim
Alfano, Orlando
Barrera Díaz, Deicy Amparo
Eimer, Griselda Alejandra
author_role author
author2 Sapag, Karim
Alfano, Orlando
Barrera Díaz, Deicy Amparo
Eimer, Griselda Alejandra
author2_role author
author
author
author
dc.subject.none.fl_str_mv Mesostructures
Heterogeneous photo-fenton
Herbicides
Degradation
topic Mesostructures
Heterogeneous photo-fenton
Herbicides
Degradation
dc.description.none.fl_txt_mv The 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.
Fil: Benzaquén, Tamara. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.
Fil: 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.
Fil: Alfano, Orlando. Universidad Nacional del Litoral. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina.
Fil: Barrera Díaz, Deicy Amparo. Universidad Nacional de San Luis. Instituto de Física Aplicada. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Eimer, Griselda Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.
description The 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.
publishDate 2017
dc.date.none.fl_str_mv 2017
2022-05-27T22:07:40Z
2022-05-27T22:07:40Z
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv 1° Energy, Efficiency and Environmental Sustainability Conference (2017).
http://hdl.handle.net/20.500.12272/6505
identifier_str_mv 1° Energy, Efficiency and Environmental Sustainability Conference (2017).
url http://hdl.handle.net/20.500.12272/6505
dc.language.none.fl_str_mv eng
eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2022-05-27T22:07:40Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Eimer, Griselda Alejandra
No comercial. Sólo de uso académico.
eu_rights_str_mv openAccess
rights_invalid_str_mv 2022-05-27T22:07:40Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Eimer, Griselda Alejandra
No comercial. Sólo de uso académico.
dc.format.none.fl_str_mv pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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