Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils

This study demonstrates the application of reversible electrokinetic adsorption barrier (REKAB) technology to soils spiked with low-solubility pollutants. A permeable reactive barrier (PRB) of granular activated carbon (GAC) was placed between the anode and cathode of an electrokinetic (EK) soil rem...

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Authors: Dos Santos, E.V, Sáez Jiménez, Cristina, Cañizares Cañizares, Pablo, Martínez Huitle, Carlos Alberto, Rodrigo Rodrigo, Manuel Andrés
Format: article
Publication Date:2017
Country:España
Institution:Universidad de Castilla-La Mancha
Repository:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/29761
Online Access:http://hdl.handle.net/10578/29761
Access Level:Open access
Keyword:Electrokinetic
REKAB
Soil remediation
Permeable reactive barrier
Atrazine
Oxyfluorfen
Electrocinético
Remediación del suelo
Barrera reactiva permeableatrazina
Oxifluorfeno
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spelling Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soilsDos Santos, E.VSáez Jiménez, CristinaCañizares Cañizares, PabloMartínez Huitle, Carlos AlbertoRodrigo Rodrigo, Manuel AndrésElectrokineticREKABSoil remediationPermeable reactive barrierAtrazineOxyfluorfenElectrocinéticoRemediación del sueloBarrera reactiva permeableatrazinaOxifluorfenoThis study demonstrates the application of reversible electrokinetic adsorption barrier (REKAB) technology to soils spiked with low-solubility pollutants. A permeable reactive barrier (PRB) of granular activated carbon (GAC) was placed between the anode and cathode of an electrokinetic (EK) soil remediation bench-scale setup with the aim of enhancing the removal of two low-solubility herbicides (atrazine and oxyfluorfen) using a surfactant solution (sodium dodecyl sulfate) as the flushing fluid. This innovative study focused on evaluating the interaction between the EK system and the GAC-PRB, attempting to obtain insights into the primary mechanisms involved. The obtained results highlighted the successful treatment of atrazine and oxyfluorfen in contaminated soils. The results obtained from the tests after 15 days of treatment were compared with those obtained using the more conventional electrokinetic soil flushing (EKSF) technology, and very important differences were observed. Although both technologies are efficient for removing the herbicides from soils, REKAB outperforms EKSF. After the 15-day treatment tests, only approximately 10% of atrazine and oxyfluorfen remained in the soil, and adsorption onto the GAC bed was an important removal mechanism (15–17% of herbicide retained). The evaporation loses in REKAB were lower than those obtained in EKSF (45–50% compared to 60–65%).Este estudio demuestra la aplicación de la tecnología de barrera de adsorción electrocinética reversible (REKAB) a suelos enriquecidos con contaminantes de baja solubilidad. Se colocó una barrera reactiva permeable (PRB) de carbón activado granular (GAC) entre el ánodo y el cátodo de una configuración a escala de banco de remediación de suelo electrocinética (EK) con el objetivo de mejorar la eliminación de dos herbicidas de baja solubilidad (atrazina y oxifluorfeno). ) usando una solución de surfactante (dodecilsulfato de sodio) como líquido de lavado. Este innovador estudio se centró en evaluar la interacción entre el sistema EK y el GAC-PRB, intentando obtener información sobre los principales mecanismos involucrados. Los resultados obtenidos destacaron el tratamiento exitoso de atrazina y oxifluorfeno en suelos contaminados. Los resultados obtenidos de las pruebas después de 15 Se compararon los días de tratamiento con los obtenidos mediante la tecnología más convencional de lavado electrocinético del suelo (EKSF), y se observaron diferencias muy importantes. Aunque ambas tecnologías son eficientes para eliminar los herbicidas de los suelos, REKAB supera a EKSF. Después de las pruebas de tratamiento de 15 días, solo aproximadamente el 10 % de la atrazina y el oxifluorfen permanecieron en el suelo, y la adsorción en el lecho de GAC fue un mecanismo de eliminación importante (15–17 % del herbicida retenido). Las pérdidas por evaporación en REKAB fueron inferiores a las obtenidas en EKSF (45-50% frente a 60-65%).Elsevier202220222017info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/10578/29761reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/297612026-05-27T07:36:41Z
dc.title.none.fl_str_mv Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils
title Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils
spellingShingle Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils
Dos Santos, E.V
Electrokinetic
REKAB
Soil remediation
Permeable reactive barrier
Atrazine
Oxyfluorfen
Electrocinético
Remediación del suelo
Barrera reactiva permeableatrazina
Oxifluorfeno
title_short Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils
title_full Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils
title_fullStr Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils
title_full_unstemmed Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils
title_sort Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils
dc.creator.none.fl_str_mv Dos Santos, E.V
Sáez Jiménez, Cristina
Cañizares Cañizares, Pablo
Martínez Huitle, Carlos Alberto
Rodrigo Rodrigo, Manuel Andrés
author Dos Santos, E.V
author_facet Dos Santos, E.V
Sáez Jiménez, Cristina
Cañizares Cañizares, Pablo
Martínez Huitle, Carlos Alberto
Rodrigo Rodrigo, Manuel Andrés
author_role author
author2 Sáez Jiménez, Cristina
Cañizares Cañizares, Pablo
Martínez Huitle, Carlos Alberto
Rodrigo Rodrigo, Manuel Andrés
author2_role author
author
author
author
dc.subject.none.fl_str_mv Electrokinetic
REKAB
Soil remediation
Permeable reactive barrier
Atrazine
Oxyfluorfen
Electrocinético
Remediación del suelo
Barrera reactiva permeableatrazina
Oxifluorfeno
topic Electrokinetic
REKAB
Soil remediation
Permeable reactive barrier
Atrazine
Oxyfluorfen
Electrocinético
Remediación del suelo
Barrera reactiva permeableatrazina
Oxifluorfeno
description This study demonstrates the application of reversible electrokinetic adsorption barrier (REKAB) technology to soils spiked with low-solubility pollutants. A permeable reactive barrier (PRB) of granular activated carbon (GAC) was placed between the anode and cathode of an electrokinetic (EK) soil remediation bench-scale setup with the aim of enhancing the removal of two low-solubility herbicides (atrazine and oxyfluorfen) using a surfactant solution (sodium dodecyl sulfate) as the flushing fluid. This innovative study focused on evaluating the interaction between the EK system and the GAC-PRB, attempting to obtain insights into the primary mechanisms involved. The obtained results highlighted the successful treatment of atrazine and oxyfluorfen in contaminated soils. The results obtained from the tests after 15 days of treatment were compared with those obtained using the more conventional electrokinetic soil flushing (EKSF) technology, and very important differences were observed. Although both technologies are efficient for removing the herbicides from soils, REKAB outperforms EKSF. After the 15-day treatment tests, only approximately 10% of atrazine and oxyfluorfen remained in the soil, and adsorption onto the GAC bed was an important removal mechanism (15–17% of herbicide retained). The evaporation loses in REKAB were lower than those obtained in EKSF (45–50% compared to 60–65%).
publishDate 2017
dc.date.none.fl_str_mv 2017
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/10578/29761
url http://hdl.handle.net/10578/29761
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 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_ 1869418044153921536
score 15,300724

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