Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–Electrolysis

The treatment of soil-washing effluents polluted with herbicide oxyfluorfen is studied using a combined process consisting of biosorption and electrolysis. Results show that oxyfluorfen is very efficiently removed from synthetic soil by soil washing with sodium dodecyl sulfate (SDS). The effluent ca...

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Autores: Chair, Khaoula, Bedoui, Ahmed, Bensalah, Nasr, Sáez Jiménez, Cristina, Fernández Morales, Francisco Jesús, Cotillas, Salvador, Cañizares Cañizares, Pablo, Rodrigo Rodrigo, Manuel Andrés
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/29402
Acceso en línea:http://hdl.handle.net/10578/29402
Access Level:acceso abierto
Palabra clave:Suelos contaminados
Electrólisis
Herbicidas
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spelling Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–ElectrolysisChair, KhaoulaBedoui, AhmedBensalah, NasrSáez Jiménez, CristinaFernández Morales, Francisco JesúsCotillas, SalvadorCañizares Cañizares, PabloRodrigo Rodrigo, Manuel AndrésSuelos contaminadosElectrólisisHerbicidasThe treatment of soil-washing effluents polluted with herbicide oxyfluorfen is studied using a combined process consisting of biosorption and electrolysis. Results show that oxyfluorfen is very efficiently removed from synthetic soil by soil washing with sodium dodecyl sulfate (SDS). The effluent can be treated by biosorption with fresh activated sludge coming from a municipal wastewater treatment plant, and the maximum adsorption capacity of this activated sludge was found to be 18 mg of oxyfluorfen per gram of biomass. Biosorption fits well to a type I adsorption isotherm. Effluents of the biosorption process underwent anodic oxidation, photoelectrolysis, and sonoelectrolysis at high and low frequency. The four technologies were able to mineralize completely the effluent, although important differences arose during the treatment which depended significantly on the application of ultrasound or ultraviolet irradiation and on the release of sulfate from the oxidation of SDS: intermediates were removed faster because of the activation of sulfate radicals. Oxyfluorfen and its oxidation intermediates are removed faster than SDS, and when they are fully depleted there are still large concentrations of SDS in the treated solution. This opens the possibility of reusing the soil washing fluid.ACS202220222017info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/10578/29402reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/294022026-05-27T07:36:41Z
dc.title.none.fl_str_mv Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–Electrolysis
title Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–Electrolysis
spellingShingle Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–Electrolysis
Chair, Khaoula
Suelos contaminados
Electrólisis
Herbicidas
title_short Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–Electrolysis
title_full Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–Electrolysis
title_fullStr Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–Electrolysis
title_full_unstemmed Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–Electrolysis
title_sort Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption–Electrolysis
dc.creator.none.fl_str_mv Chair, Khaoula
Bedoui, Ahmed
Bensalah, Nasr
Sáez Jiménez, Cristina
Fernández Morales, Francisco Jesús
Cotillas, Salvador
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author Chair, Khaoula
author_facet Chair, Khaoula
Bedoui, Ahmed
Bensalah, Nasr
Sáez Jiménez, Cristina
Fernández Morales, Francisco Jesús
Cotillas, Salvador
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author_role author
author2 Bedoui, Ahmed
Bensalah, Nasr
Sáez Jiménez, Cristina
Fernández Morales, Francisco Jesús
Cotillas, Salvador
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Suelos contaminados
Electrólisis
Herbicidas
topic Suelos contaminados
Electrólisis
Herbicidas
description The treatment of soil-washing effluents polluted with herbicide oxyfluorfen is studied using a combined process consisting of biosorption and electrolysis. Results show that oxyfluorfen is very efficiently removed from synthetic soil by soil washing with sodium dodecyl sulfate (SDS). The effluent can be treated by biosorption with fresh activated sludge coming from a municipal wastewater treatment plant, and the maximum adsorption capacity of this activated sludge was found to be 18 mg of oxyfluorfen per gram of biomass. Biosorption fits well to a type I adsorption isotherm. Effluents of the biosorption process underwent anodic oxidation, photoelectrolysis, and sonoelectrolysis at high and low frequency. The four technologies were able to mineralize completely the effluent, although important differences arose during the treatment which depended significantly on the application of ultrasound or ultraviolet irradiation and on the release of sulfate from the oxidation of SDS: intermediates were removed faster because of the activation of sulfate radicals. Oxyfluorfen and its oxidation intermediates are removed faster than SDS, and when they are fully depleted there are still large concentrations of SDS in the treated solution. This opens the possibility of reusing the soil washing fluid.
publishDate 2017
dc.date.none.fl_str_mv 2017
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10578/29402
url http://hdl.handle.net/10578/29402
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 ACS
publisher.none.fl_str_mv ACS
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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score 15.300719

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