Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processes

This work evaluates the influence of the relative position of electrodes and the use of surfactants on the mobility of chlorinated hydrocarbons in real silts undergoing the application of electric fields. It is concluded that, opposite to what it could be expected according to results obtained in pr...

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Detalles Bibliográficos
Autores: Fernández Cascán, Jesús, Isidro Elvira, Julia, Guadaño , Joaquín, Sáez Jiménez, Cristina, Rodrigo Rodrigo, Manuel Andrés
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/42802
Acceso en línea:https://doi.org/10.1007/s10008-024-05941-3
https://hdl.handle.net/10578/42802
Access Level:acceso abierto
Palabra clave:Chlorinated hydrocarbons
Electrode arrangement
Silt
id ES_0234bcc65f2511b8e026bbf8792b51f0
oai_identifier_str oai:ruidera.uclm.es:10578/42802
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processes
title Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processes
spellingShingle Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processes
Fernández Cascán, Jesús
Chlorinated hydrocarbons
Electrode arrangement
Silt
title_short Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processes
title_full Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processes
title_fullStr Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processes
title_full_unstemmed Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processes
title_sort Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processes
dc.creator.none.fl_str_mv Fernández Cascán, Jesús
Isidro Elvira, Julia
Guadaño , Joaquín
Sáez Jiménez, Cristina
Rodrigo Rodrigo, Manuel Andrés
author Fernández Cascán, Jesús
author_facet Fernández Cascán, Jesús
Isidro Elvira, Julia
Guadaño , Joaquín
Sáez Jiménez, Cristina
Rodrigo Rodrigo, Manuel Andrés
author_role author
author2 Isidro Elvira, Julia
Guadaño , Joaquín
Sáez Jiménez, Cristina
Rodrigo Rodrigo, Manuel Andrés
author2_role author
author
author
author
dc.subject.none.fl_str_mv Chlorinated hydrocarbons
Electrode arrangement
Silt
topic Chlorinated hydrocarbons
Electrode arrangement
Silt
description This work evaluates the influence of the relative position of electrodes and the use of surfactants on the mobility of chlorinated hydrocarbons in real silts undergoing the application of electric fields. It is concluded that, opposite to what it could be expected according to results obtained in previous scientific works in which spiked soil is used, the drag of organic pollutants by the electroosmotic flux is negligible, as well as the transport through the soil of organics associated with other electrokinetic processes, because the amount of pollutant collected in the electrolyte wells is lower than 1% after the application of electric field for a fortnight. This means that ageing of soil contributes to make stronger the interaction of soil and pollutants. Pollution of soil does not influence the transport of water by electroosmosis and salts by electromigration because no differences are found in the three tests in which the relative position of the polluted soil and electrodes is changed. As well, the amount of pollutants collected in a granular activated carbon trap that is placed at the outlet of the gas flow is also very low, although mass balance and condensation of liquid in the walls of the mockup indicate that the grasshopper effect is very important. Dichlorination is found to be the most important process, because it is observed in all tests. This dichlorination contributes to improve volatility of the pollutants, and it is improved when using anodes of iron as compared to glassy carbon and when SDS surfactant is added to soil. Results are of a great significance because they show that electrokinetic does not behave in the same way in real and synthetic spiked soils and shed light on the influence of the key parameters on the process, despite the small testing devices used.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1007/s10008-024-05941-3
https://hdl.handle.net/10578/42802
url https://doi.org/10.1007/s10008-024-05941-3
https://hdl.handle.net/10578/42802
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 SPRINGER
publisher.none.fl_str_mv SPRINGER
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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spelling Electrokinetic remediation of real soils polluted with chlorinated hydrocarbons: relevance of dichlorination and volatilization processesFernández Cascán, JesúsIsidro Elvira, JuliaGuadaño , JoaquínSáez Jiménez, CristinaRodrigo Rodrigo, Manuel AndrésChlorinated hydrocarbonsElectrode arrangementSiltThis work evaluates the influence of the relative position of electrodes and the use of surfactants on the mobility of chlorinated hydrocarbons in real silts undergoing the application of electric fields. It is concluded that, opposite to what it could be expected according to results obtained in previous scientific works in which spiked soil is used, the drag of organic pollutants by the electroosmotic flux is negligible, as well as the transport through the soil of organics associated with other electrokinetic processes, because the amount of pollutant collected in the electrolyte wells is lower than 1% after the application of electric field for a fortnight. This means that ageing of soil contributes to make stronger the interaction of soil and pollutants. Pollution of soil does not influence the transport of water by electroosmosis and salts by electromigration because no differences are found in the three tests in which the relative position of the polluted soil and electrodes is changed. As well, the amount of pollutants collected in a granular activated carbon trap that is placed at the outlet of the gas flow is also very low, although mass balance and condensation of liquid in the walls of the mockup indicate that the grasshopper effect is very important. Dichlorination is found to be the most important process, because it is observed in all tests. This dichlorination contributes to improve volatility of the pollutants, and it is improved when using anodes of iron as compared to glassy carbon and when SDS surfactant is added to soil. Results are of a great significance because they show that electrokinetic does not behave in the same way in real and synthetic spiked soils and shed light on the influence of the key parameters on the process, despite the small testing devices used.This work evaluates the influence of the relative position of electrodes and the use of surfactants on the mobility of chlorinated hydrocarbons in real silts undergoing the application of electric fields. It is concluded that, opposite to what it could be expected according to results obtained in previous scientific works in which spiked soil is used, the drag of organic pollutants by the electroosmotic flux is negligible, as well as the transport through the soil of organics associated with other electrokinetic processes, because the amount of pollutant collected in the electrolyte wells is lower than 1% after the application of electric field for a fortnight. This means that ageing of soil contributes to make stronger the interaction of soil and pollutants. Pollution of soil does not influence the transport of water by electroosmosis and salts by electromigration because no differences are found in the three tests in which the relative position of the polluted soil and electrodes is changed. As well, the amount of pollutants collected in a granular activated carbon trap that is placed at the outlet of the gas flow is also very low, although mass balance and condensation of liquid in the walls of the mockup indicate that the grasshopper effect is very important. Dichlorination is found to be the most important process, because it is observed in all tests. This dichlorination contributes to improve volatility of the pollutants, and it is improved when using anodes of iron as compared to glassy carbon and when SDS surfactant is added to soil. Results are of a great significance because they show that electrokinetic does not behave in the same way in real and synthetic spiked soils and shed light on the influence of the key parameters on the process, despite the small testing devices used.SPRINGER202520252024info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://doi.org/10.1007/s10008-024-05941-3https://hdl.handle.net/10578/42802reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/428022026-05-27T07:36:41Z
score 15,198674

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