Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes

The present work reports the synthesis of zeolites from two metakaolins, one derived from the white kaolin and the other derived from the red kaolin, found in a deposit in the city of São Simão (Brazil). The metakaolins were prepared by calcination of the kaolins at 600 ◦C; zeolite A was obtained af...

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Autores: Pereira, Priscila Martins, Ferreira, Breno Freitas, Oliveira, Nathalia Paula, Gil Bravo, Antonio, Korili, Sophia A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/38813
Acceso en línea:https://hdl.handle.net/2454/38813
Access Level:acceso abierto
Palabra clave:Kaolin
Metakaolin
Zeolite A
Cationic dye adsorption
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spelling Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyesPereira, Priscila MartinsFerreira, Breno FreitasOliveira, Nathalia PaulaGil Bravo, AntonioKorili, Sophia A.KaolinMetakaolinZeolite ACationic dye adsorptionThe present work reports the synthesis of zeolites from two metakaolins, one derived from the white kaolin and the other derived from the red kaolin, found in a deposit in the city of São Simão (Brazil). The metakaolins were prepared by calcination of the kaolins at 600 ◦C; zeolite A was obtained after alkali treatment of the metakaolins with NaOH. The resulting solids were characterized by powder X-ray diffraction, thermal analysis, scanning electron microscopy, and nitrogen adsorption/desorption at −196 ◦C, which confirmed formation of zeolite A. The zeolites were applied as adsorbents to remove methylene blue, safranine, and malachite green from aqueous solutions. The zeolites displayed high adsorption capacity within short times (between one and five minutes); qt was 0.96 mg/g. The equilibrium study showed that the zeolites had higher adsorption capacity for malachite green (qe = 55.00 mg/g) than for the other two cationic dyes, and that the Langmuir isotherm was the model that best explained the adsorption mechanism.The Spanish authors thank the Spanish Ministry of Economy and Competitiveness (MINECO)_x000D_ and the European Regional Development Fund (ERDF) for joint financial support (grant MAT2013–47811–C2–R_x000D_ and MAT2016-78863-C2-R). The Brazilian group acknowledges the support from the Brazilian research funding_x000D_ agencies Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) (311767/2015–0, 2012/08618-0,_x000D_ 2013/19523-3, and 2016/01501–1), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES),_x000D_ and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq). Both groups thank the Spain–Brazil_x000D_ Interuniversity Cooperation Grant, jointly funded by the Spanish Ministry of Education, Science and Sports_x000D_ (PHBP14/00003) and CAPES (317/15).MDPIKimika AplikatuaInstitute for Advanced Materials and Mathematics - INAMAT2Química Aplicada2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/38813reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/MINECO//MAT2013-47811-C2-1-Rinfo:eu-repo/grantAgreement/ES/1PE/MAT2016-78863© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access_x000D_ article distributed under the terms and conditions of the Creative Commons Attribution_x000D_ (CC BY) license.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/388132026-06-17T12:41:47Z
dc.title.none.fl_str_mv Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes
title Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes
spellingShingle Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes
Pereira, Priscila Martins
Kaolin
Metakaolin
Zeolite A
Cationic dye adsorption
title_short Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes
title_full Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes
title_fullStr Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes
title_full_unstemmed Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes
title_sort Synthesis of zeolite a from metakaolin and its application in the adsorption of cationic dyes
dc.creator.none.fl_str_mv Pereira, Priscila Martins
Ferreira, Breno Freitas
Oliveira, Nathalia Paula
Gil Bravo, Antonio
Korili, Sophia A.
author Pereira, Priscila Martins
author_facet Pereira, Priscila Martins
Ferreira, Breno Freitas
Oliveira, Nathalia Paula
Gil Bravo, Antonio
Korili, Sophia A.
author_role author
author2 Ferreira, Breno Freitas
Oliveira, Nathalia Paula
Gil Bravo, Antonio
Korili, Sophia A.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Kimika Aplikatua
Institute for Advanced Materials and Mathematics - INAMAT2
Química Aplicada
dc.subject.none.fl_str_mv Kaolin
Metakaolin
Zeolite A
Cationic dye adsorption
topic Kaolin
Metakaolin
Zeolite A
Cationic dye adsorption
description The present work reports the synthesis of zeolites from two metakaolins, one derived from the white kaolin and the other derived from the red kaolin, found in a deposit in the city of São Simão (Brazil). The metakaolins were prepared by calcination of the kaolins at 600 ◦C; zeolite A was obtained after alkali treatment of the metakaolins with NaOH. The resulting solids were characterized by powder X-ray diffraction, thermal analysis, scanning electron microscopy, and nitrogen adsorption/desorption at −196 ◦C, which confirmed formation of zeolite A. The zeolites were applied as adsorbents to remove methylene blue, safranine, and malachite green from aqueous solutions. The zeolites displayed high adsorption capacity within short times (between one and five minutes); qt was 0.96 mg/g. The equilibrium study showed that the zeolites had higher adsorption capacity for malachite green (qe = 55.00 mg/g) than for the other two cationic dyes, and that the Langmuir isotherm was the model that best explained the adsorption mechanism.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/38813
url https://hdl.handle.net/2454/38813
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO//MAT2013-47811-C2-1-R
info:eu-repo/grantAgreement/ES/1PE/MAT2016-78863
dc.rights.none.fl_str_mv https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
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