Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sections

Electrokinetic-assisted phytoremediation (EKPR) has been recently proposed by us to remediate soils contaminated by atrazine, a common pesticide in agrarian areas. The goal of this work was to study the differences of electrochemical and biological processes occurred in the different soil sections (...

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Autores: Sánchez, Virtudes, López-Bellido Garrido, Francisco Javier, Rodrigo Rodrigo, Manuel Andrés, Rodríguez, Luis
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/29301
Acceso en línea:https://doi.org/10.1016/j.seppur.2018.09.064
http://hdl.handle.net/10578/29301
Access Level:acceso abierto
Palabra clave:Atrazine
Maize
Electrokinetic-assisted phytoremediation
Electroosmosis
Electromigration
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spelling Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sectionsSánchez, VirtudesLópez-Bellido Garrido, Francisco JavierRodrigo Rodrigo, Manuel AndrésRodríguez, LuisAtrazineMaizeElectrokinetic-assisted phytoremediationElectroosmosisElectromigrationElectrokinetic-assisted phytoremediation (EKPR) has been recently proposed by us to remediate soils contaminated by atrazine, a common pesticide in agrarian areas. The goal of this work was to study the differences of electrochemical and biological processes occurred in the different soil sections (anode, cathode and interelectrode section) of the pots used in an EKPR test carried out with maize and a low permeability soil spiked with atrazine. An initial atrazine soil concentration of 5 mg kg−1 was used; the electric current (with voltage gradients of 2 and 4 V cm−1) was applied during 14 days, 4 h a day and changing the polarity of the electrodes each 2 h. This operation mode avoided the extreme soil pH values, although it tended to increase throughout the EKPR test causing soil alkalinisation, especially in the cathode. As a result, maize growth was poorer in the electrode soil sections. Atrazine and its metabolites, deethylatrazine and deisopropylatrazine, were taken up and accumulated in the maize tissues in a different extent depending on the soil section considered, showing the mobilization of atrazine by the electric current. The best results were found for the 2 V cm−1 treatment, for which the presence of maize increased 20–30% the overall atrazine removal in the cathode and middle sections of the planted pots as compared to the unplanted pots, showing the ability of EKPR to improve the efficiency of the electrokinetic remediation. Electromigration and electroosmotic flux contributed to transport atrazine and its metabolites throughout the soil.Elsevier202220222019info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://doi.org/10.1016/j.seppur.2018.09.064http://hdl.handle.net/10578/29301reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésSpanish Ministry of Economy, Industry and Competitiveness and European Union through project CTM2016-76197-R (AEI/FEDER, EU)Regional Government of Castilla-La Mancha and the European Social Fund for the PhD grant number PRE2014/8027info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/293012026-05-27T07:36:41Z
dc.title.none.fl_str_mv Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sections
title Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sections
spellingShingle Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sections
Sánchez, Virtudes
Atrazine
Maize
Electrokinetic-assisted phytoremediation
Electroosmosis
Electromigration
title_short Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sections
title_full Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sections
title_fullStr Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sections
title_full_unstemmed Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sections
title_sort Electrokinetic-assisted phytoremediation of atrazine: Differences between electrode and interelectrode soil sections
dc.creator.none.fl_str_mv Sánchez, Virtudes
López-Bellido Garrido, Francisco Javier
Rodrigo Rodrigo, Manuel Andrés
Rodríguez, Luis
author Sánchez, Virtudes
author_facet Sánchez, Virtudes
López-Bellido Garrido, Francisco Javier
Rodrigo Rodrigo, Manuel Andrés
Rodríguez, Luis
author_role author
author2 López-Bellido Garrido, Francisco Javier
Rodrigo Rodrigo, Manuel Andrés
Rodríguez, Luis
author2_role author
author
author
dc.subject.none.fl_str_mv Atrazine
Maize
Electrokinetic-assisted phytoremediation
Electroosmosis
Electromigration
topic Atrazine
Maize
Electrokinetic-assisted phytoremediation
Electroosmosis
Electromigration
description Electrokinetic-assisted phytoremediation (EKPR) has been recently proposed by us to remediate soils contaminated by atrazine, a common pesticide in agrarian areas. The goal of this work was to study the differences of electrochemical and biological processes occurred in the different soil sections (anode, cathode and interelectrode section) of the pots used in an EKPR test carried out with maize and a low permeability soil spiked with atrazine. An initial atrazine soil concentration of 5 mg kg−1 was used; the electric current (with voltage gradients of 2 and 4 V cm−1) was applied during 14 days, 4 h a day and changing the polarity of the electrodes each 2 h. This operation mode avoided the extreme soil pH values, although it tended to increase throughout the EKPR test causing soil alkalinisation, especially in the cathode. As a result, maize growth was poorer in the electrode soil sections. Atrazine and its metabolites, deethylatrazine and deisopropylatrazine, were taken up and accumulated in the maize tissues in a different extent depending on the soil section considered, showing the mobilization of atrazine by the electric current. The best results were found for the 2 V cm−1 treatment, for which the presence of maize increased 20–30% the overall atrazine removal in the cathode and middle sections of the planted pots as compared to the unplanted pots, showing the ability of EKPR to improve the efficiency of the electrokinetic remediation. Electromigration and electroosmotic flux contributed to transport atrazine and its metabolites throughout the soil.
publishDate 2019
dc.date.none.fl_str_mv 2019
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.seppur.2018.09.064
http://hdl.handle.net/10578/29301
url https://doi.org/10.1016/j.seppur.2018.09.064
http://hdl.handle.net/10578/29301
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Spanish Ministry of Economy, Industry and Competitiveness and European Union through project CTM2016-76197-R (AEI/FEDER, EU)
Regional Government of Castilla-La Mancha and the European Social Fund for the PhD grant number PRE2014/8027
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
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