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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/153659
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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 Técnicas2025-09-29T10:02:45Zoai: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:34982025-09-29 10:02:45.273CONICET 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 |
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1844613835219009536 |
score |
13.070432 |