Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes

Autores
Conte, Leandro Oscar; Querini, Pedro; Albizzati, Enrique; Alfano, Orlando Mario
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
BACKGROUND: An experimental study of the homogeneous photo-Fenton degradation of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is presented.Different sources of iron in water solution were studied: sulphate, oxalate and citrate complexes. The performances of these complexes were evaluated by means of two parameters: (i) the photonic efficiencies of degradation and mineralization; and (ii) the quantum efficiencies of degradation and mineralization. Moreover, in order to quantify the consumption of the oxidizing agent, two parameters were also defined and evaluated: the initial specific consumption of the hydrogen peroxide and the minimum hydrogen peroxide consumption for complete mineralization. RESULTS: For pH=5 and T =35ºC, the degradation photonic efficiency using ferric sulphate was 6 times lower than that obtained with the ferric citrate.On the contrary, at pH=5, quantum efficiencies of mineralization close to 50% for citrate and oxalate complexes were attained. For pH=5 and 25 or 35ºC, the initial specific consumption of hydrogen peroxide for the ferric sulphate was 5 times higher than those of the remaining complexes. However, considering all the operating conditions, the minimum hydrogen peroxide consumption for completemineralization using the oxalate complex was always lower than or at most similar to those observed in the other two complexes. CONCLUSION: Using different sources of iron, the influence of pH and temperature on the pollutant degradation and mineralization process was determined. For pH=5 and both temperatures, the ferric sulphate system required more than twice the time to achieve complete degradation of the herbicide. Moreover, mineralization only reached 55% after 180 min operation.
Fil: Conte, Leandro Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina
Fil: Querini, Pedro. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina
Fil: Albizzati, Enrique. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
Fil: Alfano, Orlando Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina
Materia
Photo-Fenton
Solar Energy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/9324
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/9324
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron ComplexesConte, Leandro OscarQuerini, PedroAlbizzati, EnriqueAlfano, Orlando MarioPhoto-FentonSolar Energyhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2BACKGROUND: An experimental study of the homogeneous photo-Fenton degradation of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is presented.Different sources of iron in water solution were studied: sulphate, oxalate and citrate complexes. The performances of these complexes were evaluated by means of two parameters: (i) the photonic efficiencies of degradation and mineralization; and (ii) the quantum efficiencies of degradation and mineralization. Moreover, in order to quantify the consumption of the oxidizing agent, two parameters were also defined and evaluated: the initial specific consumption of the hydrogen peroxide and the minimum hydrogen peroxide consumption for complete mineralization. RESULTS: For pH=5 and T =35ºC, the degradation photonic efficiency using ferric sulphate was 6 times lower than that obtained with the ferric citrate.On the contrary, at pH=5, quantum efficiencies of mineralization close to 50% for citrate and oxalate complexes were attained. For pH=5 and 25 or 35ºC, the initial specific consumption of hydrogen peroxide for the ferric sulphate was 5 times higher than those of the remaining complexes. However, considering all the operating conditions, the minimum hydrogen peroxide consumption for completemineralization using the oxalate complex was always lower than or at most similar to those observed in the other two complexes. CONCLUSION: Using different sources of iron, the influence of pH and temperature on the pollutant degradation and mineralization process was determined. For pH=5 and both temperatures, the ferric sulphate system required more than twice the time to achieve complete degradation of the herbicide. Moreover, mineralization only reached 55% after 180 min operation.Fil: Conte, Leandro Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); ArgentinaFil: Querini, Pedro. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; ArgentinaFil: Albizzati, Enrique. Universidad Nacional del Litoral. Facultad de Ingeniería Química; ArgentinaFil: Alfano, Orlando Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; ArgentinaWiley2014-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/9324Conte, Leandro Oscar; Querini, Pedro; Albizzati, Enrique; Alfano, Orlando Mario; Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes; Wiley; Journal Of Chemical Technology And Biotechnology; 89; 1-2014; 1967-19740268-2575enginfo:eu-repo/semantics/altIdentifier/doi/10.1002/jctb.4284info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/jctb.4284/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:11Zoai:ri.conicet.gov.ar:11336/9324instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:58:11.816CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes
title Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes
spellingShingle Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes
Conte, Leandro Oscar
Photo-Fenton
Solar Energy
title_short Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes
title_full Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes
title_fullStr Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes
title_full_unstemmed Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes
title_sort Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes
dc.creator.none.fl_str_mv Conte, Leandro Oscar
Querini, Pedro
Albizzati, Enrique
Alfano, Orlando Mario
author Conte, Leandro Oscar
author_facet Conte, Leandro Oscar
Querini, Pedro
Albizzati, Enrique
Alfano, Orlando Mario
author_role author
author2 Querini, Pedro
Albizzati, Enrique
Alfano, Orlando Mario
author2_role author
author
author
dc.subject.none.fl_str_mv Photo-Fenton
Solar Energy
topic Photo-Fenton
Solar Energy
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv BACKGROUND: An experimental study of the homogeneous photo-Fenton degradation of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is presented.Different sources of iron in water solution were studied: sulphate, oxalate and citrate complexes. The performances of these complexes were evaluated by means of two parameters: (i) the photonic efficiencies of degradation and mineralization; and (ii) the quantum efficiencies of degradation and mineralization. Moreover, in order to quantify the consumption of the oxidizing agent, two parameters were also defined and evaluated: the initial specific consumption of the hydrogen peroxide and the minimum hydrogen peroxide consumption for complete mineralization. RESULTS: For pH=5 and T =35ºC, the degradation photonic efficiency using ferric sulphate was 6 times lower than that obtained with the ferric citrate.On the contrary, at pH=5, quantum efficiencies of mineralization close to 50% for citrate and oxalate complexes were attained. For pH=5 and 25 or 35ºC, the initial specific consumption of hydrogen peroxide for the ferric sulphate was 5 times higher than those of the remaining complexes. However, considering all the operating conditions, the minimum hydrogen peroxide consumption for completemineralization using the oxalate complex was always lower than or at most similar to those observed in the other two complexes. CONCLUSION: Using different sources of iron, the influence of pH and temperature on the pollutant degradation and mineralization process was determined. For pH=5 and both temperatures, the ferric sulphate system required more than twice the time to achieve complete degradation of the herbicide. Moreover, mineralization only reached 55% after 180 min operation.
Fil: Conte, Leandro Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina
Fil: Querini, Pedro. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina
Fil: Albizzati, Enrique. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
Fil: Alfano, Orlando Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina
description BACKGROUND: An experimental study of the homogeneous photo-Fenton degradation of herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is presented.Different sources of iron in water solution were studied: sulphate, oxalate and citrate complexes. The performances of these complexes were evaluated by means of two parameters: (i) the photonic efficiencies of degradation and mineralization; and (ii) the quantum efficiencies of degradation and mineralization. Moreover, in order to quantify the consumption of the oxidizing agent, two parameters were also defined and evaluated: the initial specific consumption of the hydrogen peroxide and the minimum hydrogen peroxide consumption for complete mineralization. RESULTS: For pH=5 and T =35ºC, the degradation photonic efficiency using ferric sulphate was 6 times lower than that obtained with the ferric citrate.On the contrary, at pH=5, quantum efficiencies of mineralization close to 50% for citrate and oxalate complexes were attained. For pH=5 and 25 or 35ºC, the initial specific consumption of hydrogen peroxide for the ferric sulphate was 5 times higher than those of the remaining complexes. However, considering all the operating conditions, the minimum hydrogen peroxide consumption for completemineralization using the oxalate complex was always lower than or at most similar to those observed in the other two complexes. CONCLUSION: Using different sources of iron, the influence of pH and temperature on the pollutant degradation and mineralization process was determined. For pH=5 and both temperatures, the ferric sulphate system required more than twice the time to achieve complete degradation of the herbicide. Moreover, mineralization only reached 55% after 180 min operation.
publishDate 2014
dc.date.none.fl_str_mv 2014-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/9324
Conte, Leandro Oscar; Querini, Pedro; Albizzati, Enrique; Alfano, Orlando Mario; Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes; Wiley; Journal Of Chemical Technology And Biotechnology; 89; 1-2014; 1967-1974
0268-2575
url http://hdl.handle.net/11336/9324
identifier_str_mv Conte, Leandro Oscar; Querini, Pedro; Albizzati, Enrique; Alfano, Orlando Mario; Photonic and Quantum Efficiencies for the Homogeneus Photo-Fenton Degradation of a Herbicide 2,4-D Using Different Iron Complexes; Wiley; Journal Of Chemical Technology And Biotechnology; 89; 1-2014; 1967-1974
0268-2575
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/jctb.4284
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/jctb.4284/abstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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