FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradation

Autores
Elías, Verónica; Ochoa Rodríguez, Pablo; Vaschetto, Eliana; Casuscelli, Sandra; Eimer, Griselda Alejandra
Año de publicación
2017
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The photo-Fenton processes are included in the Advanced Oxidation Processes (AOPs) which are efficient for the treatment of waste water affected by organic pollutants. This process involves the use of Fe ions as catalyst to activate hydrogen peroxide (H2O2) decomposition in order to generate hydroxyl radicals (OH*) which are able to degrade organic molecules in aquatic systems under ambient conditions [1]. The Fe salts often used as the metal source are soluble in water, and the Fenton process is usually in homogeneous phase. Nevertheless, this process has the inconvenient of the low operation pH (3) and the difficulty for the recovery of Fe from the generated sludge that need further treatments. Then, the immobilization of Fe species on solids supports result as an attractive option to developed Fenton catalysts in heterogeneous phase. In this sense, materials with porous structures as SBA-15 silicates have attracted increasing interests as supports due to their high specific surface and pore volume [2]. In this work the SBA-15 support was modified with Fe by a simple method (wet impregnation) using a solution of Fe(NO3) 3.9H2O in ethanol. After eliminate the solvent in a rotary evaporator the solid was calcined a 350 oC for 3 h. The metal concentration for the impregnating solution was chose in order to reach an Fe load of 2.5 % wt. The solid was test as catalyst for the Acid Orange 7 (AO7) degradation under UV-vis radiation and using a stoichiometric concentration of H2O2. Under the pH of operation (3.5) it was not observed a considerable Fe lixiviation, confirming that the process is under heterogeneous phase. An almost total AO7 and H2O2 degradation was observed after 5 h of radiation. For its part, a high mineralization was also observed (81 %) which indicate the efficiency for the tested catalyst. From the solid characterization by XRD, UV-Vis DR, N2 physisorption and TPR, it was found that the high surface of the regular structured SBA-15 support was just slightly modified by the Fe presence, and a high dispersion of the metal was allowed. Thus, it could be concluded that the high dispersed Fe ions anchored in the SBA-15 surface are responsible for the activity and stability of the catalyst. Then, the catalyst was recovered from the aqueous medium an evaluated in a second catalytic cycle, reaching the same mineralization percentage. This result was other evidence of the high catalyst stability confirming that the process is in heterogeneous phase. Finally, this active catalytic reactivity for the synthetized solid, in addition with the observed stability, provide a great advantage for the proposed photo-Fenton process using a heterogeneous catalyst over the classic homogeneous Fenton process.
Fil: Elías, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.
Fil: Ochoa Rodríguez, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.
Fil: Vaschetto, Eliana. Consejo Nacional de Investigaciones Científicas y Técnica. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina. Fil: Viera Fernández, M. Universidad Nacional de Córdoba
Fil: Casuscelli, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; 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
SBA-15 silicates
Photo-fenton
Stability
Azo-Dyes
Degradation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2022-05-27T22:25:01Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/6507
Acceder
id RIAUTN_02dbca7083e78396383b1f92afab2f38
oai_identifier_str oai:ria.utn.edu.ar:20.500.12272/6507
network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradationElías, VerónicaOchoa Rodríguez, PabloVaschetto, ElianaCasuscelli, SandraEimer, Griselda AlejandraSBA-15 silicatesPhoto-fentonStabilityAzo-DyesDegradationThe photo-Fenton processes are included in the Advanced Oxidation Processes (AOPs) which are efficient for the treatment of waste water affected by organic pollutants. This process involves the use of Fe ions as catalyst to activate hydrogen peroxide (H2O2) decomposition in order to generate hydroxyl radicals (OH*) which are able to degrade organic molecules in aquatic systems under ambient conditions [1]. The Fe salts often used as the metal source are soluble in water, and the Fenton process is usually in homogeneous phase. Nevertheless, this process has the inconvenient of the low operation pH (3) and the difficulty for the recovery of Fe from the generated sludge that need further treatments. Then, the immobilization of Fe species on solids supports result as an attractive option to developed Fenton catalysts in heterogeneous phase. In this sense, materials with porous structures as SBA-15 silicates have attracted increasing interests as supports due to their high specific surface and pore volume [2]. In this work the SBA-15 support was modified with Fe by a simple method (wet impregnation) using a solution of Fe(NO3) 3.9H2O in ethanol. After eliminate the solvent in a rotary evaporator the solid was calcined a 350 oC for 3 h. The metal concentration for the impregnating solution was chose in order to reach an Fe load of 2.5 % wt. The solid was test as catalyst for the Acid Orange 7 (AO7) degradation under UV-vis radiation and using a stoichiometric concentration of H2O2. Under the pH of operation (3.5) it was not observed a considerable Fe lixiviation, confirming that the process is under heterogeneous phase. An almost total AO7 and H2O2 degradation was observed after 5 h of radiation. For its part, a high mineralization was also observed (81 %) which indicate the efficiency for the tested catalyst. From the solid characterization by XRD, UV-Vis DR, N2 physisorption and TPR, it was found that the high surface of the regular structured SBA-15 support was just slightly modified by the Fe presence, and a high dispersion of the metal was allowed. Thus, it could be concluded that the high dispersed Fe ions anchored in the SBA-15 surface are responsible for the activity and stability of the catalyst. Then, the catalyst was recovered from the aqueous medium an evaluated in a second catalytic cycle, reaching the same mineralization percentage. This result was other evidence of the high catalyst stability confirming that the process is in heterogeneous phase. Finally, this active catalytic reactivity for the synthetized solid, in addition with the observed stability, provide a great advantage for the proposed photo-Fenton process using a heterogeneous catalyst over the classic homogeneous Fenton process.Fil: Elías, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.Fil: Ochoa Rodríguez, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.Fil: Vaschetto, Eliana. Consejo Nacional de Investigaciones Científicas y Técnica. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina. Fil: Viera Fernández, M. Universidad Nacional de CórdobaFil: Casuscelli, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; 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.2022-05-27T22:25:01Z2022-05-27T22:25:01Z2017info: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/20.500.12272/6507enginfo:eu-repo/semantics/openAccess2022-05-27T22:25:01Zhttp://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 Nacional2026-09-24T12:48:23Zoai:ria.utn.edu.ar:20.500.12272/6507instacron: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:a2026-09-24 12:48:24.723Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradation
title FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradation
spellingShingle FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradation
Elías, Verónica
SBA-15 silicates
Photo-fenton
Stability
Azo-Dyes
Degradation
title_short FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradation
title_full FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradation
title_fullStr FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradation
title_full_unstemmed FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradation
title_sort FE/SBA-15 mesoporous materials as photo-fenton catalyst for azo-dyes degradation
dc.creator.none.fl_str_mv Elías, Verónica
Ochoa Rodríguez, Pablo
Vaschetto, Eliana
Casuscelli, Sandra
Eimer, Griselda Alejandra
author Elías, Verónica
author_facet Elías, Verónica
Ochoa Rodríguez, Pablo
Vaschetto, Eliana
Casuscelli, Sandra
Eimer, Griselda Alejandra
author_role author
author2 Ochoa Rodríguez, Pablo
Vaschetto, Eliana
Casuscelli, Sandra
Eimer, Griselda Alejandra
author2_role author
author
author
author
dc.subject.none.fl_str_mv SBA-15 silicates
Photo-fenton
Stability
Azo-Dyes
Degradation
topic SBA-15 silicates
Photo-fenton
Stability
Azo-Dyes
Degradation
dc.description.none.fl_txt_mv The photo-Fenton processes are included in the Advanced Oxidation Processes (AOPs) which are efficient for the treatment of waste water affected by organic pollutants. This process involves the use of Fe ions as catalyst to activate hydrogen peroxide (H2O2) decomposition in order to generate hydroxyl radicals (OH*) which are able to degrade organic molecules in aquatic systems under ambient conditions [1]. The Fe salts often used as the metal source are soluble in water, and the Fenton process is usually in homogeneous phase. Nevertheless, this process has the inconvenient of the low operation pH (3) and the difficulty for the recovery of Fe from the generated sludge that need further treatments. Then, the immobilization of Fe species on solids supports result as an attractive option to developed Fenton catalysts in heterogeneous phase. In this sense, materials with porous structures as SBA-15 silicates have attracted increasing interests as supports due to their high specific surface and pore volume [2]. In this work the SBA-15 support was modified with Fe by a simple method (wet impregnation) using a solution of Fe(NO3) 3.9H2O in ethanol. After eliminate the solvent in a rotary evaporator the solid was calcined a 350 oC for 3 h. The metal concentration for the impregnating solution was chose in order to reach an Fe load of 2.5 % wt. The solid was test as catalyst for the Acid Orange 7 (AO7) degradation under UV-vis radiation and using a stoichiometric concentration of H2O2. Under the pH of operation (3.5) it was not observed a considerable Fe lixiviation, confirming that the process is under heterogeneous phase. An almost total AO7 and H2O2 degradation was observed after 5 h of radiation. For its part, a high mineralization was also observed (81 %) which indicate the efficiency for the tested catalyst. From the solid characterization by XRD, UV-Vis DR, N2 physisorption and TPR, it was found that the high surface of the regular structured SBA-15 support was just slightly modified by the Fe presence, and a high dispersion of the metal was allowed. Thus, it could be concluded that the high dispersed Fe ions anchored in the SBA-15 surface are responsible for the activity and stability of the catalyst. Then, the catalyst was recovered from the aqueous medium an evaluated in a second catalytic cycle, reaching the same mineralization percentage. This result was other evidence of the high catalyst stability confirming that the process is in heterogeneous phase. Finally, this active catalytic reactivity for the synthetized solid, in addition with the observed stability, provide a great advantage for the proposed photo-Fenton process using a heterogeneous catalyst over the classic homogeneous Fenton process.
Fil: Elías, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.
Fil: Ochoa Rodríguez, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina.
Fil: Vaschetto, Eliana. Consejo Nacional de Investigaciones Científicas y Técnica. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; Argentina. Fil: Viera Fernández, M. Universidad Nacional de Córdoba
Fil: Casuscelli, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química; 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 photo-Fenton processes are included in the Advanced Oxidation Processes (AOPs) which are efficient for the treatment of waste water affected by organic pollutants. This process involves the use of Fe ions as catalyst to activate hydrogen peroxide (H2O2) decomposition in order to generate hydroxyl radicals (OH*) which are able to degrade organic molecules in aquatic systems under ambient conditions [1]. The Fe salts often used as the metal source are soluble in water, and the Fenton process is usually in homogeneous phase. Nevertheless, this process has the inconvenient of the low operation pH (3) and the difficulty for the recovery of Fe from the generated sludge that need further treatments. Then, the immobilization of Fe species on solids supports result as an attractive option to developed Fenton catalysts in heterogeneous phase. In this sense, materials with porous structures as SBA-15 silicates have attracted increasing interests as supports due to their high specific surface and pore volume [2]. In this work the SBA-15 support was modified with Fe by a simple method (wet impregnation) using a solution of Fe(NO3) 3.9H2O in ethanol. After eliminate the solvent in a rotary evaporator the solid was calcined a 350 oC for 3 h. The metal concentration for the impregnating solution was chose in order to reach an Fe load of 2.5 % wt. The solid was test as catalyst for the Acid Orange 7 (AO7) degradation under UV-vis radiation and using a stoichiometric concentration of H2O2. Under the pH of operation (3.5) it was not observed a considerable Fe lixiviation, confirming that the process is under heterogeneous phase. An almost total AO7 and H2O2 degradation was observed after 5 h of radiation. For its part, a high mineralization was also observed (81 %) which indicate the efficiency for the tested catalyst. From the solid characterization by XRD, UV-Vis DR, N2 physisorption and TPR, it was found that the high surface of the regular structured SBA-15 support was just slightly modified by the Fe presence, and a high dispersion of the metal was allowed. Thus, it could be concluded that the high dispersed Fe ions anchored in the SBA-15 surface are responsible for the activity and stability of the catalyst. Then, the catalyst was recovered from the aqueous medium an evaluated in a second catalytic cycle, reaching the same mineralization percentage. This result was other evidence of the high catalyst stability confirming that the process is in heterogeneous phase. Finally, this active catalytic reactivity for the synthetized solid, in addition with the observed stability, provide a great advantage for the proposed photo-Fenton process using a heterogeneous catalyst over the classic homogeneous Fenton process.
publishDate 2017
dc.date.none.fl_str_mv 2017
2022-05-27T22:25:01Z
2022-05-27T22:25:01Z
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/20.500.12272/6507
identifier_str_mv 1° Energy, Efficiency and Environmental Sustainability Conference (2017).
url http://hdl.handle.net/20.500.12272/6507
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2022-05-27T22:25:01Z
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 2022-05-27T22:25:01Z
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
_version_ 1877230963771047936
score 13.24418

Publicaciones similares