Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents

Autores
Rossi, Ezequiel; Avila Ramirez, Jhon Alejandro; Errea, María Inés
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This work described the preparation and characterization of water insoluble chitosan derivatives as lead adsorbents. In highly regioselective reactions, N-substituted crosslinked chitosan derivatives were obtained by crosslinking native chitosan with mucic and adipic acid (a polyhydroxylated and a non-functionalized diacid of the same length chains). The crosslinking degree of the chitosan modified with adipic acid was significantly higher than that crosslinked with mucic acid (0.446 and 0.316, respectively), while the degree of substitution was almost the same (approximately 80 %). Lead adsorption isotherms were constructed at different temperatures and adjusted to well-known models, obtaining the best fit to the experimental data with Langmuir model. The lead adsorption capacity of new materials was greater than many of the adsorbents described in literature (76.3 and 69.7 mg g−1 for chitosan modified with mucic and adipic acid, respectively). Moreover, thermodynamic parameters were calculated, and results showed that the lead adsorption on the derivatives was spontaneous, exothermic, and governed by chemical interaction. Besides, kinetic studies were performed and adjusted to well-known models. The pseudo-second order kinetic equation was the one that most appropriately described the lead adsorption on the new materials. Results were consistent with the strong electrostatic attraction established between the lead cations and the free carboxylate groups of the derivatives.
Fil: Rossi, Ezequiel. Instituto Tecnológico de Buenos Aires. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Avila Ramirez, Jhon Alejandro. Instituto Tecnológico de Buenos Aires. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Errea, María Inés. Instituto Tecnológico de Buenos Aires. Departamento de Ingeniería Química; Argentina
Materia
CHITOSAN
CROSSLINKING
LEAD ADSORPTION
MUCIC ACID
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:11336/153659
Acceder
id CONICETDig_08d161c483daeedccde6b1aeea43f12c
oai_identifier_str oai:ri.conicet.gov.ar:11336/153659
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbentsRossi, EzequielAvila Ramirez, Jhon AlejandroErrea, María InésCHITOSANCROSSLINKINGLEAD ADSORPTIONMUCIC ACIDhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2https://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2This work described the preparation and characterization of water insoluble chitosan derivatives as lead adsorbents. In highly regioselective reactions, N-substituted crosslinked chitosan derivatives were obtained by crosslinking native chitosan with mucic and adipic acid (a polyhydroxylated and a non-functionalized diacid of the same length chains). The crosslinking degree of the chitosan modified with adipic acid was significantly higher than that crosslinked with mucic acid (0.446 and 0.316, respectively), while the degree of substitution was almost the same (approximately 80 %). Lead adsorption isotherms were constructed at different temperatures and adjusted to well-known models, obtaining the best fit to the experimental data with Langmuir model. The lead adsorption capacity of new materials was greater than many of the adsorbents described in literature (76.3 and 69.7 mg g−1 for chitosan modified with mucic and adipic acid, respectively). Moreover, thermodynamic parameters were calculated, and results showed that the lead adsorption on the derivatives was spontaneous, exothermic, and governed by chemical interaction. Besides, kinetic studies were performed and adjusted to well-known models. The pseudo-second order kinetic equation was the one that most appropriately described the lead adsorption on the new materials. Results were consistent with the strong electrostatic attraction established between the lead cations and the free carboxylate groups of the derivatives.Fil: Rossi, Ezequiel. Instituto Tecnológico de Buenos Aires. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Avila Ramirez, Jhon Alejandro. Instituto Tecnológico de Buenos Aires. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Errea, María Inés. Instituto Tecnológico de Buenos Aires. Departamento de Ingeniería Química; ArgentinaElsevier2020-10info: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/11336/153659Rossi, Ezequiel; Avila Ramirez, Jhon Alejandro; Errea, María Inés; Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents; Elsevier; Journal of Environmental Chemical Engineering; 8; 5; 10-2020; 1-102213-34372213-2929CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S2213343720305595?via%3Dihubinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jece.2020.104210info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:32:13Zoai:ri.conicet.gov.ar:11336/153659instacron: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 11:32:14.171CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
title Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
spellingShingle Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
Rossi, Ezequiel
CHITOSAN
CROSSLINKING
LEAD ADSORPTION
MUCIC ACID
title_short Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
title_full Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
title_fullStr Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
title_full_unstemmed Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
title_sort Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents
dc.creator.none.fl_str_mv Rossi, Ezequiel
Avila Ramirez, Jhon Alejandro
Errea, María Inés
author Rossi, Ezequiel
author_facet Rossi, Ezequiel
Avila Ramirez, Jhon Alejandro
Errea, María Inés
author_role author
author2 Avila Ramirez, Jhon Alejandro
Errea, María Inés
author2_role author
author
dc.subject.none.fl_str_mv CHITOSAN
CROSSLINKING
LEAD ADSORPTION
MUCIC ACID
topic CHITOSAN
CROSSLINKING
LEAD ADSORPTION
MUCIC ACID
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This work described the preparation and characterization of water insoluble chitosan derivatives as lead adsorbents. In highly regioselective reactions, N-substituted crosslinked chitosan derivatives were obtained by crosslinking native chitosan with mucic and adipic acid (a polyhydroxylated and a non-functionalized diacid of the same length chains). The crosslinking degree of the chitosan modified with adipic acid was significantly higher than that crosslinked with mucic acid (0.446 and 0.316, respectively), while the degree of substitution was almost the same (approximately 80 %). Lead adsorption isotherms were constructed at different temperatures and adjusted to well-known models, obtaining the best fit to the experimental data with Langmuir model. The lead adsorption capacity of new materials was greater than many of the adsorbents described in literature (76.3 and 69.7 mg g−1 for chitosan modified with mucic and adipic acid, respectively). Moreover, thermodynamic parameters were calculated, and results showed that the lead adsorption on the derivatives was spontaneous, exothermic, and governed by chemical interaction. Besides, kinetic studies were performed and adjusted to well-known models. The pseudo-second order kinetic equation was the one that most appropriately described the lead adsorption on the new materials. Results were consistent with the strong electrostatic attraction established between the lead cations and the free carboxylate groups of the derivatives.
Fil: Rossi, Ezequiel. Instituto Tecnológico de Buenos Aires. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Avila Ramirez, Jhon Alejandro. Instituto Tecnológico de Buenos Aires. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Errea, María Inés. Instituto Tecnológico de Buenos Aires. Departamento de Ingeniería Química; Argentina
description This work described the preparation and characterization of water insoluble chitosan derivatives as lead adsorbents. In highly regioselective reactions, N-substituted crosslinked chitosan derivatives were obtained by crosslinking native chitosan with mucic and adipic acid (a polyhydroxylated and a non-functionalized diacid of the same length chains). The crosslinking degree of the chitosan modified with adipic acid was significantly higher than that crosslinked with mucic acid (0.446 and 0.316, respectively), while the degree of substitution was almost the same (approximately 80 %). Lead adsorption isotherms were constructed at different temperatures and adjusted to well-known models, obtaining the best fit to the experimental data with Langmuir model. The lead adsorption capacity of new materials was greater than many of the adsorbents described in literature (76.3 and 69.7 mg g−1 for chitosan modified with mucic and adipic acid, respectively). Moreover, thermodynamic parameters were calculated, and results showed that the lead adsorption on the derivatives was spontaneous, exothermic, and governed by chemical interaction. Besides, kinetic studies were performed and adjusted to well-known models. The pseudo-second order kinetic equation was the one that most appropriately described the lead adsorption on the new materials. Results were consistent with the strong electrostatic attraction established between the lead cations and the free carboxylate groups of the derivatives.
publishDate 2020
dc.date.none.fl_str_mv 2020-10
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/11336/153659
Rossi, Ezequiel; Avila Ramirez, Jhon Alejandro; Errea, María Inés; Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents; Elsevier; Journal of Environmental Chemical Engineering; 8; 5; 10-2020; 1-10
2213-3437
2213-2929
CONICET Digital
CONICET
url http://hdl.handle.net/11336/153659
identifier_str_mv Rossi, Ezequiel; Avila Ramirez, Jhon Alejandro; Errea, María Inés; Preparation of an environmentally friendly lead adsorbent. A contribution to the rational design of heavy metal adsorbents; Elsevier; Journal of Environmental Chemical Engineering; 8; 5; 10-2020; 1-10
2213-3437
2213-2929
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://www.sciencedirect.com/science/article/pii/S2213343720305595?via%3Dihub
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jece.2020.104210
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
_version_ 1846781932720881664
score 12.982451

Publicaciones similares