Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process

In this work, it was carried out the study of the electro-bioremediation of soil polluted with diesel by means of combined electrokinetic soil flushing and biobarriers, using bench scale setups and fourteen days-long tests. Two different biobarriers were evaluated: one of them was developed in the l...

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Detalhes bibliográficos
Autores: Mena, Esperanza, Villaseñor Camacho, José, Cañizares, Pablo, Rodrigo, Manuel Andrés
Formato: artículo
Fecha de publicación:2016
País:España
Recursos:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/29790
Acesso em linha:http://hdl.handle.net/10578/29790
Access Level:acceso abierto
Palavra-chave:Electro-bioremediation
Biobarriers
Enhanced processes
Electrokinetic
Electro-biorremediación
Biobarreras
Suelo contaminado con diesel
Procesos mejorados
Electrocinético
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spelling Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation processMena, EsperanzaVillaseñor Camacho, JoséCañizares, PabloRodrigo, Manuel AndrésElectro-bioremediationBiobarriersEnhanced processesElectrokineticElectro-biorremediaciónBiobarrerasSuelo contaminado con dieselProcesos mejoradosElectrocinéticoIn this work, it was carried out the study of the electro-bioremediation of soil polluted with diesel by means of combined electrokinetic soil flushing and biobarriers, using bench scale setups and fourteen days-long tests. Two different biobarriers were evaluated: one of them was developed in the laboratory, with a culture of diesel-degrading microorganisms supported on gravel particles (BB1); the other was obtained by mixing directly clay soil with activated sludge obtained in a municipal wastewater treatment plant (BB2). Biobarriers were placed in a central point of the soil section to be treated, to prevent the negative consequences of pH fronts on microorganisms viability. Potential difference of 0.5 and 1.0 V cm−1 were applied. For the promotion in the transport of the diesel to the biobarrier, a surfactant solution was used as electrolyte (flushing fluid). Results confirm that negative influence of the extreme pH fronts on the microbial viability can be prevented using this electro-bioremediation approach. In the same way, uniform diesel removal was obtained all over the soil by using the surfactant solution. After fourteen days of treatment, in the experiments using the BB1, 19.36% and 27.36% of the total amount of diesel present in the soil were removed applying 0.5 and 1.0 V cm−1, respectively. In the experiments using BB2, 23.33% and 29.10% referred to the total amount of diesel were removed after the fourteen days tests at 0.5 and 1.0 V cm−1, respectively, indicating that the non-specific barrier is slightly more efficient despite not containing an acclimated culture.En este trabajo se llevó a cabo el estudio de la electro-biorremediación de suelos contaminados con diésel mediante lavado electrocinético combinado de suelos y biobarreras, utilizando montajes a escala de banco y ensayos de catorce días de duración. Se evaluaron dos biobarreras diferentes: una de ellas desarrollada en laboratorio, con un cultivo de microorganismos degradadores de diesel soportado en partículas de grava (BB1); el otro se obtuvo mezclando directamente tierra arcillosa con lodos activados obtenidos en una estación depuradora de aguas residuales municipales (BB2). Se colocaron biobarreras en un punto central de la sección del suelo a tratar, para prevenir las consecuencias negativas de los frentes de pH sobre la viabilidad de los microorganismos. Diferencia de potencial de 0,5 y 1,0 V cm −1se aplicaron. Para la promoción en el transporte del diésel a la biobarrera se utilizó una solución de surfactante como electrolito (líquido de lavado). Los resultados confirman que la influencia negativa de los frentes de pH extremos en la viabilidad microbiana se puede prevenir utilizando este enfoque de electro-biorremediación. De igual forma se obtuvo una remoción uniforme de diesel en todo el suelo al utilizar la solución de surfactante. Después de catorce días de tratamiento, en los experimentos con BB1, se eliminó el 19,36% y el 27,36% de la cantidad total de diésel presente en el suelo aplicando 0,5 y 1,0 V cm - 1 , respectivamente. En los experimentos con BB2, el 23,33 % y 29,10 % referido a la cantidad total de diésel se eliminó después de los catorce días de pruebas a 0,5 y 1,0 V cm −1, respectivamente, indicando que la barrera no específica es ligeramente más eficiente a pesar de no contener un cultivo aclimatado.Elsevier202220222016info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/10578/29790reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésDiesel polluted soilinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/297902026-05-27T07:36:41Z
dc.title.none.fl_str_mv Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process
title Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process
spellingShingle Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process
Mena, Esperanza
Electro-bioremediation
Biobarriers
Enhanced processes
Electrokinetic
Electro-biorremediación
Biobarreras
Suelo contaminado con diesel
Procesos mejorados
Electrocinético
title_short Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process
title_full Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process
title_fullStr Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process
title_full_unstemmed Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process
title_sort Influence of electric field on the remediation of polluted soil using a biobarrier assisted electro-bioremediation process
dc.creator.none.fl_str_mv Mena, Esperanza
Villaseñor Camacho, José
Cañizares, Pablo
Rodrigo, Manuel Andrés
author Mena, Esperanza
author_facet Mena, Esperanza
Villaseñor Camacho, José
Cañizares, Pablo
Rodrigo, Manuel Andrés
author_role author
author2 Villaseñor Camacho, José
Cañizares, Pablo
Rodrigo, Manuel Andrés
author2_role author
author
author
dc.subject.none.fl_str_mv Electro-bioremediation
Biobarriers
Enhanced processes
Electrokinetic
Electro-biorremediación
Biobarreras
Suelo contaminado con diesel
Procesos mejorados
Electrocinético
topic Electro-bioremediation
Biobarriers
Enhanced processes
Electrokinetic
Electro-biorremediación
Biobarreras
Suelo contaminado con diesel
Procesos mejorados
Electrocinético
description In this work, it was carried out the study of the electro-bioremediation of soil polluted with diesel by means of combined electrokinetic soil flushing and biobarriers, using bench scale setups and fourteen days-long tests. Two different biobarriers were evaluated: one of them was developed in the laboratory, with a culture of diesel-degrading microorganisms supported on gravel particles (BB1); the other was obtained by mixing directly clay soil with activated sludge obtained in a municipal wastewater treatment plant (BB2). Biobarriers were placed in a central point of the soil section to be treated, to prevent the negative consequences of pH fronts on microorganisms viability. Potential difference of 0.5 and 1.0 V cm−1 were applied. For the promotion in the transport of the diesel to the biobarrier, a surfactant solution was used as electrolyte (flushing fluid). Results confirm that negative influence of the extreme pH fronts on the microbial viability can be prevented using this electro-bioremediation approach. In the same way, uniform diesel removal was obtained all over the soil by using the surfactant solution. After fourteen days of treatment, in the experiments using the BB1, 19.36% and 27.36% of the total amount of diesel present in the soil were removed applying 0.5 and 1.0 V cm−1, respectively. In the experiments using BB2, 23.33% and 29.10% referred to the total amount of diesel were removed after the fourteen days tests at 0.5 and 1.0 V cm−1, respectively, indicating that the non-specific barrier is slightly more efficient despite not containing an acclimated culture.
publishDate 2016
dc.date.none.fl_str_mv 2016
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/10578/29790
url http://hdl.handle.net/10578/29790
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Diesel polluted soil
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
_version_ 1869410222528790528
score 15,300719

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