Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina

Autores
Vital, Mélanie; Martinez, Daniel Emilio; Borrelli, Natalia Lorena; Quiroga, Sandra Lujan
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Pampeano aquifer formed by loess-like sediments provides water to cities and for agricultural uses in the Pampean plain, which is the most productive area in Argentina. Studies on the mechanisms through which this groundwater acquires its chemical composition are scarce and generally make assumption about equilibrium conditions. Few works on total sediments kinetics of mineral dissolution have been made. The main objective is to characterize ions incorporation to the groundwater of the Pampeano aquifer and to estimate the rate of the dissolution of the solid phase of the Pampeano sediments. This work also aims to provide evidence on the effect of particles size on water chemistry, and the changes in mineral structure during dissolution. The methodology included batch experiments on loess and calcrete during 10 h. The kinetics of ions incorporation into water presented variations depending on the types of sediments dissolving and the sizes of particles. Steady values were reached in the first minutes of reaction. Although the principal components of the Pampeano aquifer like calcite, quartz and aluminosilicates are known to have low dissolution coefficient, ions were incorporated fastly into water and saturation of solution appeared in the first minutes of the experiments. Saturation index (SI) calculated by PHREEQC also showed sensitivity to particles size. Observations with loupe and microscope showed modifications on the sediments appearance after batch reactions. For instance, porosity in calcrete increased. Increments in BET (Brunauer–Emmett–Teller) surface area and micropore surface area were measured. Significant changes in sediment chemistry measured by SEM/EDS were observed as well during dissolution processes.
Fil: Vital, Mélanie. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Martinez, Daniel Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Borrelli, Natalia Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Quiroga, Sandra Lujan. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Materia
Batch Experiments
Calcrete Concretions
Kinetics of Dissolution
Loess-Like Sediments
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:11336/55807
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, ArgentinaVital, MélanieMartinez, Daniel EmilioBorrelli, Natalia LorenaQuiroga, Sandra LujanBatch ExperimentsCalcrete ConcretionsKinetics of DissolutionLoess-Like Sedimentshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Pampeano aquifer formed by loess-like sediments provides water to cities and for agricultural uses in the Pampean plain, which is the most productive area in Argentina. Studies on the mechanisms through which this groundwater acquires its chemical composition are scarce and generally make assumption about equilibrium conditions. Few works on total sediments kinetics of mineral dissolution have been made. The main objective is to characterize ions incorporation to the groundwater of the Pampeano aquifer and to estimate the rate of the dissolution of the solid phase of the Pampeano sediments. This work also aims to provide evidence on the effect of particles size on water chemistry, and the changes in mineral structure during dissolution. The methodology included batch experiments on loess and calcrete during 10 h. The kinetics of ions incorporation into water presented variations depending on the types of sediments dissolving and the sizes of particles. Steady values were reached in the first minutes of reaction. Although the principal components of the Pampeano aquifer like calcite, quartz and aluminosilicates are known to have low dissolution coefficient, ions were incorporated fastly into water and saturation of solution appeared in the first minutes of the experiments. Saturation index (SI) calculated by PHREEQC also showed sensitivity to particles size. Observations with loupe and microscope showed modifications on the sediments appearance after batch reactions. For instance, porosity in calcrete increased. Increments in BET (Brunauer–Emmett–Teller) surface area and micropore surface area were measured. Significant changes in sediment chemistry measured by SEM/EDS were observed as well during dissolution processes.Fil: Vital, Mélanie. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Martinez, Daniel Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Borrelli, Natalia Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Quiroga, Sandra Lujan. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaSpringer Verlag Berlín2016-09info: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/11336/55807Vital, Mélanie; Martinez, Daniel Emilio; Borrelli, Natalia Lorena; Quiroga, Sandra Lujan; Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina; Springer Verlag Berlín; Environmental Earth Sciences; 75; 17; 9-20161866-62801866-6299CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s12665-016-6011-9info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs12665-016-6011-9info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:21:11Zoai:ri.conicet.gov.ar:11336/55807instacron: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:34982025-10-15 14:21:11.785CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina
title Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina
spellingShingle Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina
Vital, Mélanie
Batch Experiments
Calcrete Concretions
Kinetics of Dissolution
Loess-Like Sediments
title_short Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina
title_full Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina
title_fullStr Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina
title_full_unstemmed Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina
title_sort Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina
dc.creator.none.fl_str_mv Vital, Mélanie
Martinez, Daniel Emilio
Borrelli, Natalia Lorena
Quiroga, Sandra Lujan
author Vital, Mélanie
author_facet Vital, Mélanie
Martinez, Daniel Emilio
Borrelli, Natalia Lorena
Quiroga, Sandra Lujan
author_role author
author2 Martinez, Daniel Emilio
Borrelli, Natalia Lorena
Quiroga, Sandra Lujan
author2_role author
author
author
dc.subject.none.fl_str_mv Batch Experiments
Calcrete Concretions
Kinetics of Dissolution
Loess-Like Sediments
topic Batch Experiments
Calcrete Concretions
Kinetics of Dissolution
Loess-Like Sediments
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Pampeano aquifer formed by loess-like sediments provides water to cities and for agricultural uses in the Pampean plain, which is the most productive area in Argentina. Studies on the mechanisms through which this groundwater acquires its chemical composition are scarce and generally make assumption about equilibrium conditions. Few works on total sediments kinetics of mineral dissolution have been made. The main objective is to characterize ions incorporation to the groundwater of the Pampeano aquifer and to estimate the rate of the dissolution of the solid phase of the Pampeano sediments. This work also aims to provide evidence on the effect of particles size on water chemistry, and the changes in mineral structure during dissolution. The methodology included batch experiments on loess and calcrete during 10 h. The kinetics of ions incorporation into water presented variations depending on the types of sediments dissolving and the sizes of particles. Steady values were reached in the first minutes of reaction. Although the principal components of the Pampeano aquifer like calcite, quartz and aluminosilicates are known to have low dissolution coefficient, ions were incorporated fastly into water and saturation of solution appeared in the first minutes of the experiments. Saturation index (SI) calculated by PHREEQC also showed sensitivity to particles size. Observations with loupe and microscope showed modifications on the sediments appearance after batch reactions. For instance, porosity in calcrete increased. Increments in BET (Brunauer–Emmett–Teller) surface area and micropore surface area were measured. Significant changes in sediment chemistry measured by SEM/EDS were observed as well during dissolution processes.
Fil: Vital, Mélanie. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Martinez, Daniel Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Borrelli, Natalia Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Quiroga, Sandra Lujan. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
description The Pampeano aquifer formed by loess-like sediments provides water to cities and for agricultural uses in the Pampean plain, which is the most productive area in Argentina. Studies on the mechanisms through which this groundwater acquires its chemical composition are scarce and generally make assumption about equilibrium conditions. Few works on total sediments kinetics of mineral dissolution have been made. The main objective is to characterize ions incorporation to the groundwater of the Pampeano aquifer and to estimate the rate of the dissolution of the solid phase of the Pampeano sediments. This work also aims to provide evidence on the effect of particles size on water chemistry, and the changes in mineral structure during dissolution. The methodology included batch experiments on loess and calcrete during 10 h. The kinetics of ions incorporation into water presented variations depending on the types of sediments dissolving and the sizes of particles. Steady values were reached in the first minutes of reaction. Although the principal components of the Pampeano aquifer like calcite, quartz and aluminosilicates are known to have low dissolution coefficient, ions were incorporated fastly into water and saturation of solution appeared in the first minutes of the experiments. Saturation index (SI) calculated by PHREEQC also showed sensitivity to particles size. Observations with loupe and microscope showed modifications on the sediments appearance after batch reactions. For instance, porosity in calcrete increased. Increments in BET (Brunauer–Emmett–Teller) surface area and micropore surface area were measured. Significant changes in sediment chemistry measured by SEM/EDS were observed as well during dissolution processes.
publishDate 2016
dc.date.none.fl_str_mv 2016-09
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/11336/55807
Vital, Mélanie; Martinez, Daniel Emilio; Borrelli, Natalia Lorena; Quiroga, Sandra Lujan; Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina; Springer Verlag Berlín; Environmental Earth Sciences; 75; 17; 9-2016
1866-6280
1866-6299
CONICET Digital
CONICET
url http://hdl.handle.net/11336/55807
identifier_str_mv Vital, Mélanie; Martinez, Daniel Emilio; Borrelli, Natalia Lorena; Quiroga, Sandra Lujan; Kinetics of dissolution processes in loess-like sediments and carbonate concretions in the southeast of the province of Buenos Aires, Argentina; Springer Verlag Berlín; Environmental Earth Sciences; 75; 17; 9-2016
1866-6280
1866-6299
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s12665-016-6011-9
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs12665-016-6011-9
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 Springer Verlag Berlín
publisher.none.fl_str_mv Springer Verlag Berlín
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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