Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater

Show more authors Abstract This paper analyzes the advantages and drawbacks of the combination of UV irradiation with electrolysis with the aim to give insight about the feasibility of the application of this technology for the reclaiming of conventionally-treated wastewater. The oxidation of synthe...

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Autores: Cotillas, Salvador, Martin de Vidales, Maria Jose, Llanos, Javier, Saez, C., Cañizares, Pablo, Rodrigo, Manuel Andrés
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/17564
Acceso en línea:http://dx.doi.org/10.1016/j.jhazmat.2016.01.050
http://hdl.handle.net/10578/17564
Access Level:acceso abierto
Palabra clave:Electrolytic process
Electro-irradiated process
Oxidation of persistent pollutants
Disinfection of urban treated wastewater
Procesos electrolitricos
Oxidación de contaminantes persistentes
Desifección de aguas residuales
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spelling Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewaterCotillas, SalvadorMartin de Vidales, Maria JoseLlanos, JavierSaez, C.Cañizares, PabloRodrigo, Manuel AndrésElectrolytic processElectro-irradiated processOxidation of persistent pollutantsDisinfection of urban treated wastewaterProcesos electrolitricosOxidación de contaminantes persistentesDesifección de aguas residualesShow more authors Abstract This paper analyzes the advantages and drawbacks of the combination of UV irradiation with electrolysis with the aim to give insight about the feasibility of the application of this technology for the reclaiming of conventionally-treated wastewater. The oxidation of synthetic solutions containing five selected model complex pollutants has been compared, showing that UV irradiation improves the results of electrolysis for progesterone, metoprolol and caffeine and deteriorates the performance for the degradation of sulfamethoxazole and dimethyl-phthalate. Differences observed becomes lower when mineralization is compared showing that the effects of UV irradiation are diluted when a mixture of species is oxidized. Results suggest that high ThOD/TOC (Theoretical oxygen demand/Total organic carbon) ratios improve the synergistic coupling of technologies while low values lead to a clear antagonistic effect. Because during oxidation progress this ratio is decreased, the observed effect on mineralization is much lower than in the oxidation of the raw molecule. Opposite to this low effect on the oxidation of organics, the improvement in the performance of the disinfection by coupling UV to electrolysis is much clearer. In addition, UV irradiation modifies significantly the chlorine speciation and helps to prevent the formation of hazardous species such as chlorate and perchlorate during the electrochemical processes.ELSEVIER201820182016info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://dx.doi.org/10.1016/j.jhazmat.2016.01.050http://hdl.handle.net/10578/17564reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/175642026-05-27T07:36:41Z
dc.title.none.fl_str_mv Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater
title Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater
spellingShingle Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater
Cotillas, Salvador
Electrolytic process
Electro-irradiated process
Oxidation of persistent pollutants
Disinfection of urban treated wastewater
Procesos electrolitricos
Oxidación de contaminantes persistentes
Desifección de aguas residuales
title_short Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater
title_full Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater
title_fullStr Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater
title_full_unstemmed Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater
title_sort Electrolytic andelectro-irradiated processes with diamond anodes for the oxidation of persistent pollutants and disinfection of urban treated wastewater
dc.creator.none.fl_str_mv Cotillas, Salvador
Martin de Vidales, Maria Jose
Llanos, Javier
Saez, C.
Cañizares, Pablo
Rodrigo, Manuel Andrés
author Cotillas, Salvador
author_facet Cotillas, Salvador
Martin de Vidales, Maria Jose
Llanos, Javier
Saez, C.
Cañizares, Pablo
Rodrigo, Manuel Andrés
author_role author
author2 Martin de Vidales, Maria Jose
Llanos, Javier
Saez, C.
Cañizares, Pablo
Rodrigo, Manuel Andrés
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Electrolytic process
Electro-irradiated process
Oxidation of persistent pollutants
Disinfection of urban treated wastewater
Procesos electrolitricos
Oxidación de contaminantes persistentes
Desifección de aguas residuales
topic Electrolytic process
Electro-irradiated process
Oxidation of persistent pollutants
Disinfection of urban treated wastewater
Procesos electrolitricos
Oxidación de contaminantes persistentes
Desifección de aguas residuales
description Show more authors Abstract This paper analyzes the advantages and drawbacks of the combination of UV irradiation with electrolysis with the aim to give insight about the feasibility of the application of this technology for the reclaiming of conventionally-treated wastewater. The oxidation of synthetic solutions containing five selected model complex pollutants has been compared, showing that UV irradiation improves the results of electrolysis for progesterone, metoprolol and caffeine and deteriorates the performance for the degradation of sulfamethoxazole and dimethyl-phthalate. Differences observed becomes lower when mineralization is compared showing that the effects of UV irradiation are diluted when a mixture of species is oxidized. Results suggest that high ThOD/TOC (Theoretical oxygen demand/Total organic carbon) ratios improve the synergistic coupling of technologies while low values lead to a clear antagonistic effect. Because during oxidation progress this ratio is decreased, the observed effect on mineralization is much lower than in the oxidation of the raw molecule. Opposite to this low effect on the oxidation of organics, the improvement in the performance of the disinfection by coupling UV to electrolysis is much clearer. In addition, UV irradiation modifies significantly the chlorine speciation and helps to prevent the formation of hazardous species such as chlorate and perchlorate during the electrochemical processes.
publishDate 2016
dc.date.none.fl_str_mv 2016
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://dx.doi.org/10.1016/j.jhazmat.2016.01.050
http://hdl.handle.net/10578/17564
url http://dx.doi.org/10.1016/j.jhazmat.2016.01.050
http://hdl.handle.net/10578/17564
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv ELSEVIER
publisher.none.fl_str_mv ELSEVIER
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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