Improved wet peroxide oxidation strategies for the treatment of chlorophenols

Different advanced oxidation strategies have been investigated for the treatment of chlorophenols in aqueous phase with the aim of improving the removal efficiency in terms of mineralization, remanent by-products and kinetics. Those strategies were homogeneous Fenton-like oxidation and CWPO with two...

Descripción completa

Detalles Bibliográficos
Autores: Muñoz García, Macarena, Martínez de Pedro, Zahara, Casas de Pedro, José Antonio, Rodríguez Jiménez, Juan José
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/671587
Acceso en línea:http://hdl.handle.net/10486/671587
https://dx.doi.org/10.1016/j.cej.2013.05.057
Access Level:acceso abierto
Palabra clave:Chlorophenol
CWPO
Fenton
Magnetic catalyst
Química
id ES_7ec7388be9f22fac63ff9f0fe70c563d
oai_identifier_str oai:repositorio.uam.es:10486/671587
network_acronym_str ES
network_name_str España
repository_id_str
spelling Improved wet peroxide oxidation strategies for the treatment of chlorophenolsMuñoz García, MacarenaMartínez de Pedro, ZaharaCasas de Pedro, José AntonioRodríguez Jiménez, Juan JoséChlorophenolCWPOFentonMagnetic catalystQuímicaDifferent advanced oxidation strategies have been investigated for the treatment of chlorophenols in aqueous phase with the aim of improving the removal efficiency in terms of mineralization, remanent by-products and kinetics. Those strategies were homogeneous Fenton-like oxidation and CWPO with two different own-prepared FexOy/γ-Al2O3 catalysts. The intensification of the process by increasing the temperature has been also evaluated. CWPO of chlorophenols with those catalysts has proved to be more efficient than homogeneous Fenton-like oxidation due to a lower rate of H2O2 decomposition allowing a higher availability of hydroxyl radicals along the course of reaction. Increasing the temperature clearly improved the oxidation rate and mineralization degree of both homogeneous Fenton-like oxidation and CWPO, achieving almost 90% TOC reduction after 1h at stoichiometric H2O2 dose, 100mgL-1 initial chlorophenol concentration, 1gL-1 Fe3O4/γ-Al2O3 catalyst, pH 3 and 90°C temperature. Both FexOy/γ-Al2O3 catalysts suffered fairly low iron leaching (<5%) and a remarkable stability in a three-cycles test with 2,4,6-TCP. The use of the magnetic catalyst is preferable due to its easy separation and recovery from the liquid phase by a magnet. Its magnetic properties remained unchanged after use in CWPOThis research has been supported by the Spanish MICINN through the projects CTQ2008-03988 and CTQ2010-14807 and by the CM through the project S-2009/AMB-1588. M. Munoz thanks the Spanish Ministry of Education for a FPU research grantElsevier B.V.Departamento de Ingeniería QuímicaFacultad de CienciasUAM. Departamento de Ingeniería Química20132013-07-05research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/671587https://dx.doi.org/10.1016/j.cej.2013.05.057reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6715872026-06-23T12:46:27Z
dc.title.none.fl_str_mv Improved wet peroxide oxidation strategies for the treatment of chlorophenols
title Improved wet peroxide oxidation strategies for the treatment of chlorophenols
spellingShingle Improved wet peroxide oxidation strategies for the treatment of chlorophenols
Muñoz García, Macarena
Chlorophenol
CWPO
Fenton
Magnetic catalyst
Química
title_short Improved wet peroxide oxidation strategies for the treatment of chlorophenols
title_full Improved wet peroxide oxidation strategies for the treatment of chlorophenols
title_fullStr Improved wet peroxide oxidation strategies for the treatment of chlorophenols
title_full_unstemmed Improved wet peroxide oxidation strategies for the treatment of chlorophenols
title_sort Improved wet peroxide oxidation strategies for the treatment of chlorophenols
dc.creator.none.fl_str_mv Muñoz García, Macarena
Martínez de Pedro, Zahara
Casas de Pedro, José Antonio
Rodríguez Jiménez, Juan José
author Muñoz García, Macarena
author_facet Muñoz García, Macarena
Martínez de Pedro, Zahara
Casas de Pedro, José Antonio
Rodríguez Jiménez, Juan José
author_role author
author2 Martínez de Pedro, Zahara
Casas de Pedro, José Antonio
Rodríguez Jiménez, Juan José
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Ingeniería Química
Facultad de Ciencias
UAM. Departamento de Ingeniería Química
dc.subject.none.fl_str_mv Chlorophenol
CWPO
Fenton
Magnetic catalyst
Química
topic Chlorophenol
CWPO
Fenton
Magnetic catalyst
Química
description Different advanced oxidation strategies have been investigated for the treatment of chlorophenols in aqueous phase with the aim of improving the removal efficiency in terms of mineralization, remanent by-products and kinetics. Those strategies were homogeneous Fenton-like oxidation and CWPO with two different own-prepared FexOy/γ-Al2O3 catalysts. The intensification of the process by increasing the temperature has been also evaluated. CWPO of chlorophenols with those catalysts has proved to be more efficient than homogeneous Fenton-like oxidation due to a lower rate of H2O2 decomposition allowing a higher availability of hydroxyl radicals along the course of reaction. Increasing the temperature clearly improved the oxidation rate and mineralization degree of both homogeneous Fenton-like oxidation and CWPO, achieving almost 90% TOC reduction after 1h at stoichiometric H2O2 dose, 100mgL-1 initial chlorophenol concentration, 1gL-1 Fe3O4/γ-Al2O3 catalyst, pH 3 and 90°C temperature. Both FexOy/γ-Al2O3 catalysts suffered fairly low iron leaching (<5%) and a remarkable stability in a three-cycles test with 2,4,6-TCP. The use of the magnetic catalyst is preferable due to its easy separation and recovery from the liquid phase by a magnet. Its magnetic properties remained unchanged after use in CWPO
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-07-05
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/671587
https://dx.doi.org/10.1016/j.cej.2013.05.057
url http://hdl.handle.net/10486/671587
https://dx.doi.org/10.1016/j.cej.2013.05.057
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869411775146885120
score 15,300719

Similares en LA Referencia