Treatment of real winery wastewater by wet oxidation at mild temperature

This study explores the treatment of high-strength real winery wastewater (COD0 ≈ 35 g/L, TOC0 ≈ 11 g/L) by wet oxidation processes. Wet air oxidation (WAO), catalytic wet air oxidation (CWAO), H 2O2-promoted CWAO, wet peroxide oxidation (WPO) and catalytic wet peroxide oxidation (CWPO) were the opt...

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Detalles Bibliográficos
Autores: Domínguez Torre, Carmen María, Quintanilla Gómez, María Asunción, Casas de Pedro, José Antonio, Rodríguez Jiménez, Juan José
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/710326
Acceso en línea:http://hdl.handle.net/10486/710326
https://dx.doi.org/10.1016/j.seppur.2014.04.003
Access Level:acceso abierto
Palabra clave:Ecotoxicity
Carbon Catalysts
Catalytic Wet Air Oxidation
Catalytic Wet Peroxide Oxidation
Winery Wastewater
Química
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spelling Treatment of real winery wastewater by wet oxidation at mild temperatureDomínguez Torre, Carmen MaríaQuintanilla Gómez, María AsunciónCasas de Pedro, José AntonioRodríguez Jiménez, Juan JoséEcotoxicityCarbon CatalystsCatalytic Wet Air OxidationCatalytic Wet Peroxide OxidationWinery WastewaterQuímicaThis study explores the treatment of high-strength real winery wastewater (COD0 ≈ 35 g/L, TOC0 ≈ 11 g/L) by wet oxidation processes. Wet air oxidation (WAO), catalytic wet air oxidation (CWAO), H 2O2-promoted CWAO, wet peroxide oxidation (WPO) and catalytic wet peroxide oxidation (CWPO) were the options tested using different carbon-based catalysts, viz. activated carbon, carbon black and graphite. Their suitability was analyzed in terms of polyphenol, chemical oxygen demand (COD) and total organic carbon (TOC) abatement upon 4 h reaction time. The results showed that hydrogen peroxide was the unique oxidant capable of achieving an effective reduction of the organic load. The graphite tested was the most active catalyst, most probably due in great part to its Fe content (0.4 wt.%), resistant to leaching. CWPO with that graphite was tested at different conditions following the evolution of COD, TOC and ecotoxicity. The best results were obtained by using graphite at 5 g/L, the original pH of the wastewater (3.8), 125 °C and the stoichiometric amount of hydrogen peroxide distributed in stepwise additions. Under those conditions, 80% COD and TOC removals with 85% of hydrogen peroxide efficiency were achieved after 4 h reaction time, giving rise to colorless effluents of very low Microtox ecotoxicityThe authors wish to thank the Spanish MICINN for the financial support through the projects CTQ2008-03988/PPQ and CTQ2010-14807. The Comunidad Autónoma de Madrid is also gratefully acknowledged for the financial support through the project S2009/AMB-1588ElsevierDepartamento de Ingeniería QuímicaFacultad de CienciasUAM. Departamento de Ingeniería Química20142014-04-13research articlehttp://purl.org/coar/resource_type/c_2df8fbb1AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/710326https://dx.doi.org/10.1016/j.seppur.2014.04.003reponame: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:10486/7103262026-06-23T12:46:27Z
dc.title.none.fl_str_mv Treatment of real winery wastewater by wet oxidation at mild temperature
title Treatment of real winery wastewater by wet oxidation at mild temperature
spellingShingle Treatment of real winery wastewater by wet oxidation at mild temperature
Domínguez Torre, Carmen María
Ecotoxicity
Carbon Catalysts
Catalytic Wet Air Oxidation
Catalytic Wet Peroxide Oxidation
Winery Wastewater
Química
title_short Treatment of real winery wastewater by wet oxidation at mild temperature
title_full Treatment of real winery wastewater by wet oxidation at mild temperature
title_fullStr Treatment of real winery wastewater by wet oxidation at mild temperature
title_full_unstemmed Treatment of real winery wastewater by wet oxidation at mild temperature
title_sort Treatment of real winery wastewater by wet oxidation at mild temperature
dc.creator.none.fl_str_mv Domínguez Torre, Carmen María
Quintanilla Gómez, María Asunción
Casas de Pedro, José Antonio
Rodríguez Jiménez, Juan José
author Domínguez Torre, Carmen María
author_facet Domínguez Torre, Carmen María
Quintanilla Gómez, María Asunción
Casas de Pedro, José Antonio
Rodríguez Jiménez, Juan José
author_role author
author2 Quintanilla Gómez, María Asunción
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 Ecotoxicity
Carbon Catalysts
Catalytic Wet Air Oxidation
Catalytic Wet Peroxide Oxidation
Winery Wastewater
Química
topic Ecotoxicity
Carbon Catalysts
Catalytic Wet Air Oxidation
Catalytic Wet Peroxide Oxidation
Winery Wastewater
Química
description This study explores the treatment of high-strength real winery wastewater (COD0 ≈ 35 g/L, TOC0 ≈ 11 g/L) by wet oxidation processes. Wet air oxidation (WAO), catalytic wet air oxidation (CWAO), H 2O2-promoted CWAO, wet peroxide oxidation (WPO) and catalytic wet peroxide oxidation (CWPO) were the options tested using different carbon-based catalysts, viz. activated carbon, carbon black and graphite. Their suitability was analyzed in terms of polyphenol, chemical oxygen demand (COD) and total organic carbon (TOC) abatement upon 4 h reaction time. The results showed that hydrogen peroxide was the unique oxidant capable of achieving an effective reduction of the organic load. The graphite tested was the most active catalyst, most probably due in great part to its Fe content (0.4 wt.%), resistant to leaching. CWPO with that graphite was tested at different conditions following the evolution of COD, TOC and ecotoxicity. The best results were obtained by using graphite at 5 g/L, the original pH of the wastewater (3.8), 125 °C and the stoichiometric amount of hydrogen peroxide distributed in stepwise additions. Under those conditions, 80% COD and TOC removals with 85% of hydrogen peroxide efficiency were achieved after 4 h reaction time, giving rise to colorless effluents of very low Microtox ecotoxicity
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-04-13
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/710326
https://dx.doi.org/10.1016/j.seppur.2014.04.003
url http://hdl.handle.net/10486/710326
https://dx.doi.org/10.1016/j.seppur.2014.04.003
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
publisher.none.fl_str_mv Elsevier
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
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