Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils

Autores
Francisca, Franco Matias; Montoro, Marcos Alexis
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Immiscible displacement processes are of key importance in remediation actions of light nonaqueous phase liquid (LNAPL) contaminated soil and groundwater. LNAPLs remain trapped in soil pores after a spill or flushing process due to the interplay of viscous, gravity, and capillary forces. In this research immiscible displacement tests were conducted in homogenous and heterogeneous sand samples. Also, the influence of fine content, mineralogy, and wettability was evaluated by testing mixtures of coarse sand with silt, zeolite, bentonite, and hydrophobic sand. Obtained results highlight the importance of pore-scale heterogeneities on the resulting displacement pattern in macroscopically homogeneous samples, and show the preferential accumulation of LNAPLs at the interfaces between different materials in heterogeneous samples. Fine particle content shows no important consequences on residual saturation but significantly changes relative permeability. In addition, the presence of hydrophobic particles also modifies hydraulic conductivity and residual LNAPL saturation. Finally, relative permeability models were fitted to experimental data in order to estimate relative permeability of tested samples.
Fil: Francisca, Franco Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Montoro, Marcos Alexis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Materia
HETEROGENEITY
IMMISCIBLE DISPLACEMENT
LIGHT NONAQUEOUS PHASE LIQUID (LNAPL)
POROUS MEDIA
RELATIVE PERMEABILITY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/180218
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/180218
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soilsFrancisca, Franco MatiasMontoro, Marcos AlexisHETEROGENEITYIMMISCIBLE DISPLACEMENTLIGHT NONAQUEOUS PHASE LIQUID (LNAPL)POROUS MEDIARELATIVE PERMEABILITYhttps://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2Immiscible displacement processes are of key importance in remediation actions of light nonaqueous phase liquid (LNAPL) contaminated soil and groundwater. LNAPLs remain trapped in soil pores after a spill or flushing process due to the interplay of viscous, gravity, and capillary forces. In this research immiscible displacement tests were conducted in homogenous and heterogeneous sand samples. Also, the influence of fine content, mineralogy, and wettability was evaluated by testing mixtures of coarse sand with silt, zeolite, bentonite, and hydrophobic sand. Obtained results highlight the importance of pore-scale heterogeneities on the resulting displacement pattern in macroscopically homogeneous samples, and show the preferential accumulation of LNAPLs at the interfaces between different materials in heterogeneous samples. Fine particle content shows no important consequences on residual saturation but significantly changes relative permeability. In addition, the presence of hydrophobic particles also modifies hydraulic conductivity and residual LNAPL saturation. Finally, relative permeability models were fitted to experimental data in order to estimate relative permeability of tested samples.Fil: Francisca, Franco Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaFil: Montoro, Marcos Alexis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaAmerican Society of Civil Engineers2014-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/180218Francisca, Franco Matias; Montoro, Marcos Alexis; Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils; American Society of Civil Engineers; Journal Of Environmental Engineering; 141; 6; 12-2014; 1-120733-9372CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://ascelibrary.org/doi/10.1061/%28ASCE%29EE.1943-7870.0000915info:eu-repo/semantics/altIdentifier/doi/10.1061/(ASCE)EE.1943-7870.0000915info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:18:25Zoai:ri.conicet.gov.ar:11336/180218instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:18:26.005CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils
title Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils
spellingShingle Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils
Francisca, Franco Matias
HETEROGENEITY
IMMISCIBLE DISPLACEMENT
LIGHT NONAQUEOUS PHASE LIQUID (LNAPL)
POROUS MEDIA
RELATIVE PERMEABILITY
title_short Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils
title_full Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils
title_fullStr Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils
title_full_unstemmed Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils
title_sort Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils
dc.creator.none.fl_str_mv Francisca, Franco Matias
Montoro, Marcos Alexis
author Francisca, Franco Matias
author_facet Francisca, Franco Matias
Montoro, Marcos Alexis
author_role author
author2 Montoro, Marcos Alexis
author2_role author
dc.subject.none.fl_str_mv HETEROGENEITY
IMMISCIBLE DISPLACEMENT
LIGHT NONAQUEOUS PHASE LIQUID (LNAPL)
POROUS MEDIA
RELATIVE PERMEABILITY
topic HETEROGENEITY
IMMISCIBLE DISPLACEMENT
LIGHT NONAQUEOUS PHASE LIQUID (LNAPL)
POROUS MEDIA
RELATIVE PERMEABILITY
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.7
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Immiscible displacement processes are of key importance in remediation actions of light nonaqueous phase liquid (LNAPL) contaminated soil and groundwater. LNAPLs remain trapped in soil pores after a spill or flushing process due to the interplay of viscous, gravity, and capillary forces. In this research immiscible displacement tests were conducted in homogenous and heterogeneous sand samples. Also, the influence of fine content, mineralogy, and wettability was evaluated by testing mixtures of coarse sand with silt, zeolite, bentonite, and hydrophobic sand. Obtained results highlight the importance of pore-scale heterogeneities on the resulting displacement pattern in macroscopically homogeneous samples, and show the preferential accumulation of LNAPLs at the interfaces between different materials in heterogeneous samples. Fine particle content shows no important consequences on residual saturation but significantly changes relative permeability. In addition, the presence of hydrophobic particles also modifies hydraulic conductivity and residual LNAPL saturation. Finally, relative permeability models were fitted to experimental data in order to estimate relative permeability of tested samples.
Fil: Francisca, Franco Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
Fil: Montoro, Marcos Alexis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
description Immiscible displacement processes are of key importance in remediation actions of light nonaqueous phase liquid (LNAPL) contaminated soil and groundwater. LNAPLs remain trapped in soil pores after a spill or flushing process due to the interplay of viscous, gravity, and capillary forces. In this research immiscible displacement tests were conducted in homogenous and heterogeneous sand samples. Also, the influence of fine content, mineralogy, and wettability was evaluated by testing mixtures of coarse sand with silt, zeolite, bentonite, and hydrophobic sand. Obtained results highlight the importance of pore-scale heterogeneities on the resulting displacement pattern in macroscopically homogeneous samples, and show the preferential accumulation of LNAPLs at the interfaces between different materials in heterogeneous samples. Fine particle content shows no important consequences on residual saturation but significantly changes relative permeability. In addition, the presence of hydrophobic particles also modifies hydraulic conductivity and residual LNAPL saturation. Finally, relative permeability models were fitted to experimental data in order to estimate relative permeability of tested samples.
publishDate 2014
dc.date.none.fl_str_mv 2014-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/180218
Francisca, Franco Matias; Montoro, Marcos Alexis; Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils; American Society of Civil Engineers; Journal Of Environmental Engineering; 141; 6; 12-2014; 1-12
0733-9372
CONICET Digital
CONICET
url http://hdl.handle.net/11336/180218
identifier_str_mv Francisca, Franco Matias; Montoro, Marcos Alexis; Influence of particle size distribution and wettability on the displacement of LNAPL in saturated sandy soils; American Society of Civil Engineers; Journal Of Environmental Engineering; 141; 6; 12-2014; 1-12
0733-9372
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ascelibrary.org/doi/10.1061/%28ASCE%29EE.1943-7870.0000915
info:eu-repo/semantics/altIdentifier/doi/10.1061/(ASCE)EE.1943-7870.0000915
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Society of Civil Engineers
publisher.none.fl_str_mv American Society of Civil Engineers
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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