Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidation

In this work, we assessed the potential of combining Fenton´s reagent and biological oxidation for removing the imidazolium-based ionic liquid 1-Ethyl-3-methylimidazolium chloride (EmimCl). Fenton-like oxidation was conducted at variable H2O2 doses from 20 to 100% the stoichiometric value as calcula...

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Detalhes bibliográficos
Autores: Gómez Herrero, Esther, Tobajas Vizcaíno, Montserrat, Polo Díez, Alicia Marta, Rodríguez Jiménez, Juan José, Fernández Mohedano, Ángel
Tipo de documento: artigo
Data de publicação:2019
País:España
Recursos:Universidad Autónoma de Madrid
Repositório:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglês
OAI Identifier:oai:repositorio.uam.es:10486/711417
Acesso em linha:http://hdl.handle.net/10486/711417
https://dx.doi.org/10.1016/j.jhazmat.2018.10.097
Access Level:Acceso aberto
Palavra-chave:Biodegradability
Biological treatment
Ecotoxicity
Fenton-like oxidation
Ionic liquid
Ingeniería Industrial
Química
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spelling Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidationGómez Herrero, EstherTobajas Vizcaíno, MontserratPolo Díez, Alicia MartaRodríguez Jiménez, Juan JoséFernández Mohedano, ÁngelBiodegradabilityBiological treatmentEcotoxicityFenton-like oxidationIonic liquidIngeniería IndustrialQuímicaIn this work, we assessed the potential of combining Fenton´s reagent and biological oxidation for removing the imidazolium-based ionic liquid 1-Ethyl-3-methylimidazolium chloride (EmimCl). Fenton-like oxidation was conducted at variable H2O2 doses from 20 to 100% the stoichiometric value as calculated from the theoretical chemical oxygen demand (COD). The stoichiometric H2O2 dose afforded Total Organic Carbon (TOC) conversion and COD removal of 50 and 62%, respectively. Identifying the reaction by-products formed at low hydrogen peroxide doses allowed a plausible pathway for EmimCl oxidation to be proposed. The effluents from Fenton-like oxidation at substoichiometric H2O2 doses were less ecotoxic and more biodegradable than was the parent ionic liquid. The effluent from Fenton-like oxidation with the 60% H2O2 dose (TOC conversion ≅ 41%, COD removal ≅ 31%) was subsequently subjected to an effective biological treatment that allowed complete removal of the starting compound, increased its ecotoxicity to a low–moderate level and rendered it acceptably biodegradable. Biological oxidation was performed in 8-h and 12-h cycles in a sequencing batch reactor. Combining Fenton and biological oxidation of EmimCl afforded TOC conversion and COD removal of around 90%The authors wish to thank Spain’s MINECO and the Madrid Regional Government for funding this work through Projects CTM2016-76564-R and S2013/MAE-2716, respectively.ElsevierDepartamento de Ingeniería QuímicaFacultad de CienciasUAM. Departamento de Ingeniería Química20192019-03-05research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/711417https://dx.doi.org/10.1016/j.jhazmat.2018.10.097reponame: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:10486/7114172026-06-23T12:46:27Z
dc.title.none.fl_str_mv Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidation
title Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidation
spellingShingle Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidation
Gómez Herrero, Esther
Biodegradability
Biological treatment
Ecotoxicity
Fenton-like oxidation
Ionic liquid
Ingeniería Industrial
Química
title_short Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidation
title_full Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidation
title_fullStr Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidation
title_full_unstemmed Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidation
title_sort Removal of imidazolium-based ionic liquid by coupling Fenton and biological oxidation
dc.creator.none.fl_str_mv Gómez Herrero, Esther
Tobajas Vizcaíno, Montserrat
Polo Díez, Alicia Marta
Rodríguez Jiménez, Juan José
Fernández Mohedano, Ángel
author Gómez Herrero, Esther
author_facet Gómez Herrero, Esther
Tobajas Vizcaíno, Montserrat
Polo Díez, Alicia Marta
Rodríguez Jiménez, Juan José
Fernández Mohedano, Ángel
author_role author
author2 Tobajas Vizcaíno, Montserrat
Polo Díez, Alicia Marta
Rodríguez Jiménez, Juan José
Fernández Mohedano, Ángel
author2_role author
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 Biodegradability
Biological treatment
Ecotoxicity
Fenton-like oxidation
Ionic liquid
Ingeniería Industrial
Química
topic Biodegradability
Biological treatment
Ecotoxicity
Fenton-like oxidation
Ionic liquid
Ingeniería Industrial
Química
description In this work, we assessed the potential of combining Fenton´s reagent and biological oxidation for removing the imidazolium-based ionic liquid 1-Ethyl-3-methylimidazolium chloride (EmimCl). Fenton-like oxidation was conducted at variable H2O2 doses from 20 to 100% the stoichiometric value as calculated from the theoretical chemical oxygen demand (COD). The stoichiometric H2O2 dose afforded Total Organic Carbon (TOC) conversion and COD removal of 50 and 62%, respectively. Identifying the reaction by-products formed at low hydrogen peroxide doses allowed a plausible pathway for EmimCl oxidation to be proposed. The effluents from Fenton-like oxidation at substoichiometric H2O2 doses were less ecotoxic and more biodegradable than was the parent ionic liquid. The effluent from Fenton-like oxidation with the 60% H2O2 dose (TOC conversion ≅ 41%, COD removal ≅ 31%) was subsequently subjected to an effective biological treatment that allowed complete removal of the starting compound, increased its ecotoxicity to a low–moderate level and rendered it acceptably biodegradable. Biological oxidation was performed in 8-h and 12-h cycles in a sequencing batch reactor. Combining Fenton and biological oxidation of EmimCl afforded TOC conversion and COD removal of around 90%
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-03-05
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/10486/711417
https://dx.doi.org/10.1016/j.jhazmat.2018.10.097
url http://hdl.handle.net/10486/711417
https://dx.doi.org/10.1016/j.jhazmat.2018.10.097
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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score 15,300719

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