Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexane

The improper deposit of the lindane production wastes in the Sardas landfill (Sabiñánigo, Huesca) during the last century led to the pollution of this site, mainly with hexachlorocyclohexane (HCH) isomers and chlorobenzenes. The pollution affected different soil layers, including the silts and groun...

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Autores: Salom, Dani|||0000-0003-2505-8578, Fernandez Verdejo, David Juan|||0000-0002-3234-4006, Isidro, Julia|||0000-0001-6002-3106, Vicent i Huguet, Teresa|||0000-0002-6547-7358, Blánquez Cano, Paqui|||0000-0003-2443-9977
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:318800
Acceso en línea:https://ddd.uab.cat/record/318800
https://dx.doi.org/urn:doi:10.1016/j.jhazmat.2025.139397
Access Level:acceso abierto
Palabra clave:Biobarrier
Chlorobenzenes
Direct electric current
Electro-bioremediation system
Groundwater
Lindane
Silts
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spelling Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexaneSalom, Dani|||0000-0003-2505-8578Fernandez Verdejo, David Juan|||0000-0002-3234-4006Isidro, Julia|||0000-0001-6002-3106Vicent i Huguet, Teresa|||0000-0002-6547-7358Blánquez Cano, Paqui|||0000-0003-2443-9977BiobarrierChlorobenzenesDirect electric currentElectro-bioremediation systemGroundwaterLindaneSiltsThe improper deposit of the lindane production wastes in the Sardas landfill (Sabiñánigo, Huesca) during the last century led to the pollution of this site, mainly with hexachlorocyclohexane (HCH) isomers and chlorobenzenes. The pollution affected different soil layers, including the silts and groundwater. Previous works have used electrokinetic (EK) remediation techniques to address this problem in fine-grained soil layers. However, EK often needs to be coupled with other remediation techniques. In this work, the impact of establishing a biobarrier during the application of the electroremediation (electro-bioremediation system, EBS) is studied to compare with the case in which no biological treatment is conducted. Experiments were conducted at bench scale using 1.5 dm3-containers filled with polluted silts and groundwater from Sardas, and biobarriers with bacterial cultures enriched from the polluted groundwater of Sardas. Applying 1 V/cm did not prevent the biological activity, and the EBS improved by 54 % and 36 % the remediation of HCHs and chlorinated benzenes, respectively, in the silts under aerobic conditions, in contrast to the case in which only electroremediation was performed. Microbial relative population analysed by sequencing 16S genes from silts pointed out that the direct electric current affected the microorganisms' distribution along the containers due to the oxidative or reductive conditions promoted by the anode and the cathode, respectively. 22025-01-0120252025-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/318800https://dx.doi.org/urn:doi:10.1016/j.jhazmat.2025.139397reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:3188002026-06-06T12:50:31Z
dc.title.none.fl_str_mv Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexane
title Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexane
spellingShingle Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexane
Salom, Dani|||0000-0003-2505-8578
Biobarrier
Chlorobenzenes
Direct electric current
Electro-bioremediation system
Groundwater
Lindane
Silts
title_short Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexane
title_full Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexane
title_fullStr Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexane
title_full_unstemmed Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexane
title_sort Coupling electrokinetic soil flushing with bioremediation for the removal of chlorinated benzenes and hexachlorocyclohexane
dc.creator.none.fl_str_mv Salom, Dani|||0000-0003-2505-8578
Fernandez Verdejo, David Juan|||0000-0002-3234-4006
Isidro, Julia|||0000-0001-6002-3106
Vicent i Huguet, Teresa|||0000-0002-6547-7358
Blánquez Cano, Paqui|||0000-0003-2443-9977
author Salom, Dani|||0000-0003-2505-8578
author_facet Salom, Dani|||0000-0003-2505-8578
Fernandez Verdejo, David Juan|||0000-0002-3234-4006
Isidro, Julia|||0000-0001-6002-3106
Vicent i Huguet, Teresa|||0000-0002-6547-7358
Blánquez Cano, Paqui|||0000-0003-2443-9977
author_role author
author2 Fernandez Verdejo, David Juan|||0000-0002-3234-4006
Isidro, Julia|||0000-0001-6002-3106
Vicent i Huguet, Teresa|||0000-0002-6547-7358
Blánquez Cano, Paqui|||0000-0003-2443-9977
author2_role author
author
author
author
dc.subject.none.fl_str_mv Biobarrier
Chlorobenzenes
Direct electric current
Electro-bioremediation system
Groundwater
Lindane
Silts
topic Biobarrier
Chlorobenzenes
Direct electric current
Electro-bioremediation system
Groundwater
Lindane
Silts
description The improper deposit of the lindane production wastes in the Sardas landfill (Sabiñánigo, Huesca) during the last century led to the pollution of this site, mainly with hexachlorocyclohexane (HCH) isomers and chlorobenzenes. The pollution affected different soil layers, including the silts and groundwater. Previous works have used electrokinetic (EK) remediation techniques to address this problem in fine-grained soil layers. However, EK often needs to be coupled with other remediation techniques. In this work, the impact of establishing a biobarrier during the application of the electroremediation (electro-bioremediation system, EBS) is studied to compare with the case in which no biological treatment is conducted. Experiments were conducted at bench scale using 1.5 dm3-containers filled with polluted silts and groundwater from Sardas, and biobarriers with bacterial cultures enriched from the polluted groundwater of Sardas. Applying 1 V/cm did not prevent the biological activity, and the EBS improved by 54 % and 36 % the remediation of HCHs and chlorinated benzenes, respectively, in the silts under aerobic conditions, in contrast to the case in which only electroremediation was performed. Microbial relative population analysed by sequencing 16S genes from silts pointed out that the direct electric current affected the microorganisms' distribution along the containers due to the oxidative or reductive conditions promoted by the anode and the cathode, respectively.
publishDate 2025
dc.date.none.fl_str_mv 2
2025-01-01
2025
2025-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
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 https://ddd.uab.cat/record/318800
https://dx.doi.org/urn:doi:10.1016/j.jhazmat.2025.139397
url https://ddd.uab.cat/record/318800
https://dx.doi.org/urn:doi:10.1016/j.jhazmat.2025.139397
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
https://creativecommons.org/licenses/by-nc-nd/4.0/
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
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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