Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling

Autores
Borgnino Bianchi, Laura Carolina; de Pauli, Carlos Primo; Depetris Gallino, Pedro Jose
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Arsenate adsorption was studied in three clastic sediments, as a function of solution pH (4.0-9.0) and arsenate concentration. Using known mineral values, protolytic constants obtained from the literature and K ads values (obtained by fitting experimental adsorption data with empirical adsorption model), the constant capacitance surface complexation model was used to explain the adsorption behavior. The experimental and modelling approaches indicate that arsenate adsorption increases with increased pH, exhibiting a maximum adsorption value before decreasing at higher pH. Per unit mass, sample S 3 (smectite-quartz/muscovite-illite sample) adsorbs more arsenate in the pH range 5-8. 5, with 98% of sites occupied at pH 6. S 1 and S 2 have less adsorption capacity with maxima adsorption in the pH ranges of 6-8.5 and 4-6, respectively. The calculation of saturation indices by PHREEQC at different pH reveals that the solution was undersaturated with respect to aluminum arsenate (AlAsO 42H 2O), scorodite (FeAsO 42H 2O), brucite and silica, and supersaturated with respect to gibbsite, kaolinite, illite and montmorillonite (for S 3 sample). Increased arsenate concentration (in isotherm experiments) may not produce new solid phases, such as AlAsO 42H 2O and/or FeAsO 42H 2O. © 2011 Springer-Verlag.
Fil: Borgnino Bianchi, Laura Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: de Pauli, Carlos Primo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Depetris Gallino, Pedro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Materia
Adsorption
Arsenate
Clays
Sediment-Water Interface
Surface Complexation Model
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:11336/61796
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/61796
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Arsenate adsorption at the sediment-water interface: Sorption experiments and modellingBorgnino Bianchi, Laura Carolinade Pauli, Carlos PrimoDepetris Gallino, Pedro JoseAdsorptionArsenateClaysSediment-Water InterfaceSurface Complexation Modelhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Arsenate adsorption was studied in three clastic sediments, as a function of solution pH (4.0-9.0) and arsenate concentration. Using known mineral values, protolytic constants obtained from the literature and K ads values (obtained by fitting experimental adsorption data with empirical adsorption model), the constant capacitance surface complexation model was used to explain the adsorption behavior. The experimental and modelling approaches indicate that arsenate adsorption increases with increased pH, exhibiting a maximum adsorption value before decreasing at higher pH. Per unit mass, sample S 3 (smectite-quartz/muscovite-illite sample) adsorbs more arsenate in the pH range 5-8. 5, with 98% of sites occupied at pH 6. S 1 and S 2 have less adsorption capacity with maxima adsorption in the pH ranges of 6-8.5 and 4-6, respectively. The calculation of saturation indices by PHREEQC at different pH reveals that the solution was undersaturated with respect to aluminum arsenate (AlAsO 42H 2O), scorodite (FeAsO 42H 2O), brucite and silica, and supersaturated with respect to gibbsite, kaolinite, illite and montmorillonite (for S 3 sample). Increased arsenate concentration (in isotherm experiments) may not produce new solid phases, such as AlAsO 42H 2O and/or FeAsO 42H 2O. © 2011 Springer-Verlag.Fil: Borgnino Bianchi, Laura Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: de Pauli, Carlos Primo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Depetris Gallino, Pedro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaSpringer2012-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/61796Borgnino Bianchi, Laura Carolina; de Pauli, Carlos Primo; Depetris Gallino, Pedro Jose; Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling; Springer; Environmental Earth Sciences; 65; 2; 1-2012; 441-4511866-6299CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007/s12665-011-1009-9info:eu-repo/semantics/altIdentifier/doi/10.1007/s12665-011-1009-9info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:03:34Zoai:ri.conicet.gov.ar:11336/61796instacron: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:34982025-09-10 13:03:34.773CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
title Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
spellingShingle Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
Borgnino Bianchi, Laura Carolina
Adsorption
Arsenate
Clays
Sediment-Water Interface
Surface Complexation Model
title_short Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
title_full Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
title_fullStr Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
title_full_unstemmed Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
title_sort Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
dc.creator.none.fl_str_mv Borgnino Bianchi, Laura Carolina
de Pauli, Carlos Primo
Depetris Gallino, Pedro Jose
author Borgnino Bianchi, Laura Carolina
author_facet Borgnino Bianchi, Laura Carolina
de Pauli, Carlos Primo
Depetris Gallino, Pedro Jose
author_role author
author2 de Pauli, Carlos Primo
Depetris Gallino, Pedro Jose
author2_role author
author
dc.subject.none.fl_str_mv Adsorption
Arsenate
Clays
Sediment-Water Interface
Surface Complexation Model
topic Adsorption
Arsenate
Clays
Sediment-Water Interface
Surface Complexation Model
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Arsenate adsorption was studied in three clastic sediments, as a function of solution pH (4.0-9.0) and arsenate concentration. Using known mineral values, protolytic constants obtained from the literature and K ads values (obtained by fitting experimental adsorption data with empirical adsorption model), the constant capacitance surface complexation model was used to explain the adsorption behavior. The experimental and modelling approaches indicate that arsenate adsorption increases with increased pH, exhibiting a maximum adsorption value before decreasing at higher pH. Per unit mass, sample S 3 (smectite-quartz/muscovite-illite sample) adsorbs more arsenate in the pH range 5-8. 5, with 98% of sites occupied at pH 6. S 1 and S 2 have less adsorption capacity with maxima adsorption in the pH ranges of 6-8.5 and 4-6, respectively. The calculation of saturation indices by PHREEQC at different pH reveals that the solution was undersaturated with respect to aluminum arsenate (AlAsO 42H 2O), scorodite (FeAsO 42H 2O), brucite and silica, and supersaturated with respect to gibbsite, kaolinite, illite and montmorillonite (for S 3 sample). Increased arsenate concentration (in isotherm experiments) may not produce new solid phases, such as AlAsO 42H 2O and/or FeAsO 42H 2O. © 2011 Springer-Verlag.
Fil: Borgnino Bianchi, Laura Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: de Pauli, Carlos Primo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Depetris Gallino, Pedro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
description Arsenate adsorption was studied in three clastic sediments, as a function of solution pH (4.0-9.0) and arsenate concentration. Using known mineral values, protolytic constants obtained from the literature and K ads values (obtained by fitting experimental adsorption data with empirical adsorption model), the constant capacitance surface complexation model was used to explain the adsorption behavior. The experimental and modelling approaches indicate that arsenate adsorption increases with increased pH, exhibiting a maximum adsorption value before decreasing at higher pH. Per unit mass, sample S 3 (smectite-quartz/muscovite-illite sample) adsorbs more arsenate in the pH range 5-8. 5, with 98% of sites occupied at pH 6. S 1 and S 2 have less adsorption capacity with maxima adsorption in the pH ranges of 6-8.5 and 4-6, respectively. The calculation of saturation indices by PHREEQC at different pH reveals that the solution was undersaturated with respect to aluminum arsenate (AlAsO 42H 2O), scorodite (FeAsO 42H 2O), brucite and silica, and supersaturated with respect to gibbsite, kaolinite, illite and montmorillonite (for S 3 sample). Increased arsenate concentration (in isotherm experiments) may not produce new solid phases, such as AlAsO 42H 2O and/or FeAsO 42H 2O. © 2011 Springer-Verlag.
publishDate 2012
dc.date.none.fl_str_mv 2012-01
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/11336/61796
Borgnino Bianchi, Laura Carolina; de Pauli, Carlos Primo; Depetris Gallino, Pedro Jose; Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling; Springer; Environmental Earth Sciences; 65; 2; 1-2012; 441-451
1866-6299
CONICET Digital
CONICET
url http://hdl.handle.net/11336/61796
identifier_str_mv Borgnino Bianchi, Laura Carolina; de Pauli, Carlos Primo; Depetris Gallino, Pedro Jose; Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling; Springer; Environmental Earth Sciences; 65; 2; 1-2012; 441-451
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/url/http://link.springer.com/article/10.1007/s12665-011-1009-9
info:eu-repo/semantics/altIdentifier/doi/10.1007/s12665-011-1009-9
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
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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 12.993085

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