Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics

Autores
Larralde, Ana Laura; Tufo, Ana Elisabeth; Morando, Pedro Juan; Sileo, Elsa Ester
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, the adsorption of arsenic (V) onto crystalline substituted goethites was studied for samples with different Sn- contents. The highest Sn-content of the prepared samples was 5.5 (expressed as 100?[Sn]/[Sn]+[Fe]) as all attempts to prepare goethites with higher tin content only rendered amorphous materials. The Sn-for-Fe substitution caused changes on the physico-chemical properties of the obtained samples, and the thermal analysis indicated that the formed Sn-goethites were metal-deficient goethites with increased thermal stabilization towards decomposition to hematite. BET surface analysis evidenced the presence of large mesoporous or macroporous in all samples and the following trend in SSA values: GSn5.5 (54.90±0.08) > GSn0 (25.75±0.09) > GSn2.1 (17.19±0.05 m2g-1). The As(V) adsorption presented a maximum at pH = 5.50 ± 0.05 for all samples and the data showed that GSn5.5 nearly duplicates the amount of As adsorbed per gram of pure goethite. To evaluate the chemical stability of the samples, dissolution kinetics measurements in acidic conditions were also performed. Dissolution rate followed the trend GSn2.1 > GSn0 > GSn5.5. The facts that GSn5.5 dissolves slower than the pure sample and that adsorbs twice as much as pure goethite indicate that GSn5.5 is a promising agent for As(V) removal technologies.
Fil: Larralde, Ana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Tufo, Ana Elisabeth. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina
Fil: Morando, Pedro Juan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de San Martín; Argentina
Fil: Sileo, Elsa Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Materia
ARSENIC
Sn-GOETHITE
ADSORPTION
THERMAL STABILITY
SPECIFIC SURFACE AREA
DISSOLUTION
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:11336/58883
Acceder
id CONICETDig_80dfcffdd8fe7d1469dfa1434c401f41
oai_identifier_str oai:ri.conicet.gov.ar:11336/58883
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface CharacteristicsLarralde, Ana LauraTufo, Ana ElisabethMorando, Pedro JuanSileo, Elsa EsterARSENICSn-GOETHITEADSORPTIONTHERMAL STABILITYSPECIFIC SURFACE AREADISSOLUTIONhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In this work, the adsorption of arsenic (V) onto crystalline substituted goethites was studied for samples with different Sn- contents. The highest Sn-content of the prepared samples was 5.5 (expressed as 100?[Sn]/[Sn]+[Fe]) as all attempts to prepare goethites with higher tin content only rendered amorphous materials. The Sn-for-Fe substitution caused changes on the physico-chemical properties of the obtained samples, and the thermal analysis indicated that the formed Sn-goethites were metal-deficient goethites with increased thermal stabilization towards decomposition to hematite. BET surface analysis evidenced the presence of large mesoporous or macroporous in all samples and the following trend in SSA values: GSn5.5 (54.90±0.08) > GSn0 (25.75±0.09) > GSn2.1 (17.19±0.05 m2g-1). The As(V) adsorption presented a maximum at pH = 5.50 ± 0.05 for all samples and the data showed that GSn5.5 nearly duplicates the amount of As adsorbed per gram of pure goethite. To evaluate the chemical stability of the samples, dissolution kinetics measurements in acidic conditions were also performed. Dissolution rate followed the trend GSn2.1 > GSn0 > GSn5.5. The facts that GSn5.5 dissolves slower than the pure sample and that adsorbs twice as much as pure goethite indicate that GSn5.5 is a promising agent for As(V) removal technologies.Fil: Larralde, Ana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Tufo, Ana Elisabeth. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; ArgentinaFil: Morando, Pedro Juan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de San Martín; ArgentinaFil: Sileo, Elsa Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaInternational Journal of Innovative Research in Engineering & Management2015-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/58883Larralde, Ana Laura; Tufo, Ana Elisabeth; Morando, Pedro Juan; Sileo, Elsa Ester; Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics; International Journal of Innovative Research in Engineering & Management; International Journal of Innovative Research in Engineering & Management; 2; 6; 11-2015; 63-702350-0557CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.ijirem.org/IJIREM/ArchInfo.aspx?rep=95info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:24:18Zoai:ri.conicet.gov.ar:11336/58883instacron: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 13:24:18.309CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics
title Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics
spellingShingle Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics
Larralde, Ana Laura
ARSENIC
Sn-GOETHITE
ADSORPTION
THERMAL STABILITY
SPECIFIC SURFACE AREA
DISSOLUTION
title_short Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics
title_full Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics
title_fullStr Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics
title_full_unstemmed Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics
title_sort Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics
dc.creator.none.fl_str_mv Larralde, Ana Laura
Tufo, Ana Elisabeth
Morando, Pedro Juan
Sileo, Elsa Ester
author Larralde, Ana Laura
author_facet Larralde, Ana Laura
Tufo, Ana Elisabeth
Morando, Pedro Juan
Sileo, Elsa Ester
author_role author
author2 Tufo, Ana Elisabeth
Morando, Pedro Juan
Sileo, Elsa Ester
author2_role author
author
author
dc.subject.none.fl_str_mv ARSENIC
Sn-GOETHITE
ADSORPTION
THERMAL STABILITY
SPECIFIC SURFACE AREA
DISSOLUTION
topic ARSENIC
Sn-GOETHITE
ADSORPTION
THERMAL STABILITY
SPECIFIC SURFACE AREA
DISSOLUTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work, the adsorption of arsenic (V) onto crystalline substituted goethites was studied for samples with different Sn- contents. The highest Sn-content of the prepared samples was 5.5 (expressed as 100?[Sn]/[Sn]+[Fe]) as all attempts to prepare goethites with higher tin content only rendered amorphous materials. The Sn-for-Fe substitution caused changes on the physico-chemical properties of the obtained samples, and the thermal analysis indicated that the formed Sn-goethites were metal-deficient goethites with increased thermal stabilization towards decomposition to hematite. BET surface analysis evidenced the presence of large mesoporous or macroporous in all samples and the following trend in SSA values: GSn5.5 (54.90±0.08) > GSn0 (25.75±0.09) > GSn2.1 (17.19±0.05 m2g-1). The As(V) adsorption presented a maximum at pH = 5.50 ± 0.05 for all samples and the data showed that GSn5.5 nearly duplicates the amount of As adsorbed per gram of pure goethite. To evaluate the chemical stability of the samples, dissolution kinetics measurements in acidic conditions were also performed. Dissolution rate followed the trend GSn2.1 > GSn0 > GSn5.5. The facts that GSn5.5 dissolves slower than the pure sample and that adsorbs twice as much as pure goethite indicate that GSn5.5 is a promising agent for As(V) removal technologies.
Fil: Larralde, Ana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Tufo, Ana Elisabeth. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina
Fil: Morando, Pedro Juan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de San Martín; Argentina
Fil: Sileo, Elsa Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
description In this work, the adsorption of arsenic (V) onto crystalline substituted goethites was studied for samples with different Sn- contents. The highest Sn-content of the prepared samples was 5.5 (expressed as 100?[Sn]/[Sn]+[Fe]) as all attempts to prepare goethites with higher tin content only rendered amorphous materials. The Sn-for-Fe substitution caused changes on the physico-chemical properties of the obtained samples, and the thermal analysis indicated that the formed Sn-goethites were metal-deficient goethites with increased thermal stabilization towards decomposition to hematite. BET surface analysis evidenced the presence of large mesoporous or macroporous in all samples and the following trend in SSA values: GSn5.5 (54.90±0.08) > GSn0 (25.75±0.09) > GSn2.1 (17.19±0.05 m2g-1). The As(V) adsorption presented a maximum at pH = 5.50 ± 0.05 for all samples and the data showed that GSn5.5 nearly duplicates the amount of As adsorbed per gram of pure goethite. To evaluate the chemical stability of the samples, dissolution kinetics measurements in acidic conditions were also performed. Dissolution rate followed the trend GSn2.1 > GSn0 > GSn5.5. The facts that GSn5.5 dissolves slower than the pure sample and that adsorbs twice as much as pure goethite indicate that GSn5.5 is a promising agent for As(V) removal technologies.
publishDate 2015
dc.date.none.fl_str_mv 2015-11
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/11336/58883
Larralde, Ana Laura; Tufo, Ana Elisabeth; Morando, Pedro Juan; Sileo, Elsa Ester; Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics; International Journal of Innovative Research in Engineering & Management; International Journal of Innovative Research in Engineering & Management; 2; 6; 11-2015; 63-70
2350-0557
CONICET Digital
CONICET
url http://hdl.handle.net/11336/58883
identifier_str_mv Larralde, Ana Laura; Tufo, Ana Elisabeth; Morando, Pedro Juan; Sileo, Elsa Ester; Enhanced As (V) Adsorption Properties in Sn-Substituted Goethites - Changes in Chemical Reactivity and Surface Characteristics; International Journal of Innovative Research in Engineering & Management; International Journal of Innovative Research in Engineering & Management; 2; 6; 11-2015; 63-70
2350-0557
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://www.ijirem.org/IJIREM/ArchInfo.aspx?rep=95
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
application/pdf
dc.publisher.none.fl_str_mv International Journal of Innovative Research in Engineering & Management
publisher.none.fl_str_mv International Journal of Innovative Research in Engineering & Management
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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