Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies

Autores
Gonzalez, Maria Ángeles; Pavlovic, Ivana; Rojas Delgado, Ricardo; Barriga, Cristobalina
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The synthesis of a layered double hydroxide-humate (LDH–H) hybrid was purposed for the removal of Cu2+, Pb2+ and Cd2+ from aqueous solutions. This sorbent has been synthesized by incorporating humate anion into magnesium aluminum layered double hydroxide with chloride as an interlayer anion (LDH–Cl) via ion exchange. The effects of various physic-chemical factors such as pH influence, contact time, initial metal concentration and the simultaneous sorption of the three heavy metal ions onto LDH–H were investigated. The sorption capacities of humic acid (HA), LDH–Cl and LDH–H were compared under the same experimental conditions. The hybrid LDH–H presented better properties, such as greater stability and less pH increase throughout the sorption process. A high affinity and large removal capacity of Cu2+, Pb2+ and Cd2+ were obtained by complexation and hydroxide precipitation mechanism, being this major for the case of Cu2+, according to its low hydroxide solubility product value.The sorption isotherms were well described by the Langmuir equation. The metal removal efficiency was lower when the three cations were competing for the available adsorbent sites, compared to monocomponent solutions.
Fil: Gonzalez, Maria Ángeles. Universidad de Cordoba. Fac. de Matemática Astronomía y Física; España
Fil: Pavlovic, Ivana. Universidad de Cordoba. Fac. de Matemática Astronomía y Física; España
Fil: Rojas Delgado, Ricardo. 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: Barriga, Cristobalina. Universidad de Cordoba. Fac. de Matemática Astronomía y Física; España
Materia
Layered Double Hydroxides
Humic Acid
Heavy Metals
Sorption
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:11336/31430
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studiesGonzalez, Maria ÁngelesPavlovic, IvanaRojas Delgado, RicardoBarriga, CristobalinaLayered Double HydroxidesHumic AcidHeavy MetalsSorptionhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The synthesis of a layered double hydroxide-humate (LDH–H) hybrid was purposed for the removal of Cu2+, Pb2+ and Cd2+ from aqueous solutions. This sorbent has been synthesized by incorporating humate anion into magnesium aluminum layered double hydroxide with chloride as an interlayer anion (LDH–Cl) via ion exchange. The effects of various physic-chemical factors such as pH influence, contact time, initial metal concentration and the simultaneous sorption of the three heavy metal ions onto LDH–H were investigated. The sorption capacities of humic acid (HA), LDH–Cl and LDH–H were compared under the same experimental conditions. The hybrid LDH–H presented better properties, such as greater stability and less pH increase throughout the sorption process. A high affinity and large removal capacity of Cu2+, Pb2+ and Cd2+ were obtained by complexation and hydroxide precipitation mechanism, being this major for the case of Cu2+, according to its low hydroxide solubility product value.The sorption isotherms were well described by the Langmuir equation. The metal removal efficiency was lower when the three cations were competing for the available adsorbent sites, compared to monocomponent solutions.Fil: Gonzalez, Maria Ángeles. Universidad de Cordoba. Fac. de Matemática Astronomía y Física; EspañaFil: Pavlovic, Ivana. Universidad de Cordoba. Fac. de Matemática Astronomía y Física; EspañaFil: Rojas Delgado, Ricardo. 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: Barriga, Cristobalina. Universidad de Cordoba. Fac. de Matemática Astronomía y Física; EspañaElsevier Science Sa2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31430Barriga, Cristobalina; Rojas Delgado, Ricardo; Pavlovic, Ivana; Gonzalez, Maria Ángeles; Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies; Elsevier Science Sa; Chemical Engineering Journal; 254; 6-2014; 605-6111385-8947CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2014.05.132info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1385894714007189info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:30:46Zoai:ri.conicet.gov.ar:11336/31430instacron: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 15:30:46.462CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies
title Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies
spellingShingle Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies
Gonzalez, Maria Ángeles
Layered Double Hydroxides
Humic Acid
Heavy Metals
Sorption
title_short Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies
title_full Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies
title_fullStr Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies
title_full_unstemmed Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies
title_sort Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies
dc.creator.none.fl_str_mv Gonzalez, Maria Ángeles
Pavlovic, Ivana
Rojas Delgado, Ricardo
Barriga, Cristobalina
author Gonzalez, Maria Ángeles
author_facet Gonzalez, Maria Ángeles
Pavlovic, Ivana
Rojas Delgado, Ricardo
Barriga, Cristobalina
author_role author
author2 Pavlovic, Ivana
Rojas Delgado, Ricardo
Barriga, Cristobalina
author2_role author
author
author
dc.subject.none.fl_str_mv Layered Double Hydroxides
Humic Acid
Heavy Metals
Sorption
topic Layered Double Hydroxides
Humic Acid
Heavy Metals
Sorption
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The synthesis of a layered double hydroxide-humate (LDH–H) hybrid was purposed for the removal of Cu2+, Pb2+ and Cd2+ from aqueous solutions. This sorbent has been synthesized by incorporating humate anion into magnesium aluminum layered double hydroxide with chloride as an interlayer anion (LDH–Cl) via ion exchange. The effects of various physic-chemical factors such as pH influence, contact time, initial metal concentration and the simultaneous sorption of the three heavy metal ions onto LDH–H were investigated. The sorption capacities of humic acid (HA), LDH–Cl and LDH–H were compared under the same experimental conditions. The hybrid LDH–H presented better properties, such as greater stability and less pH increase throughout the sorption process. A high affinity and large removal capacity of Cu2+, Pb2+ and Cd2+ were obtained by complexation and hydroxide precipitation mechanism, being this major for the case of Cu2+, according to its low hydroxide solubility product value.The sorption isotherms were well described by the Langmuir equation. The metal removal efficiency was lower when the three cations were competing for the available adsorbent sites, compared to monocomponent solutions.
Fil: Gonzalez, Maria Ángeles. Universidad de Cordoba. Fac. de Matemática Astronomía y Física; España
Fil: Pavlovic, Ivana. Universidad de Cordoba. Fac. de Matemática Astronomía y Física; España
Fil: Rojas Delgado, Ricardo. 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: Barriga, Cristobalina. Universidad de Cordoba. Fac. de Matemática Astronomía y Física; España
description The synthesis of a layered double hydroxide-humate (LDH–H) hybrid was purposed for the removal of Cu2+, Pb2+ and Cd2+ from aqueous solutions. This sorbent has been synthesized by incorporating humate anion into magnesium aluminum layered double hydroxide with chloride as an interlayer anion (LDH–Cl) via ion exchange. The effects of various physic-chemical factors such as pH influence, contact time, initial metal concentration and the simultaneous sorption of the three heavy metal ions onto LDH–H were investigated. The sorption capacities of humic acid (HA), LDH–Cl and LDH–H were compared under the same experimental conditions. The hybrid LDH–H presented better properties, such as greater stability and less pH increase throughout the sorption process. A high affinity and large removal capacity of Cu2+, Pb2+ and Cd2+ were obtained by complexation and hydroxide precipitation mechanism, being this major for the case of Cu2+, according to its low hydroxide solubility product value.The sorption isotherms were well described by the Langmuir equation. The metal removal efficiency was lower when the three cations were competing for the available adsorbent sites, compared to monocomponent solutions.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
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/11336/31430
Barriga, Cristobalina; Rojas Delgado, Ricardo; Pavlovic, Ivana; Gonzalez, Maria Ángeles; Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies; Elsevier Science Sa; Chemical Engineering Journal; 254; 6-2014; 605-611
1385-8947
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31430
identifier_str_mv Barriga, Cristobalina; Rojas Delgado, Ricardo; Pavlovic, Ivana; Gonzalez, Maria Ángeles; Removal of Cu2+, Pb2+ and Cd2+ by layered double hydroxide–humate hybrid. Sorbate and sorbent comparative studies; Elsevier Science Sa; Chemical Engineering Journal; 254; 6-2014; 605-611
1385-8947
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2014.05.132
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1385894714007189
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 Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
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 13.22299

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