Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag

Aluminium was successfully extracted by treating an aluminium slag with aqueous NaOH under reflux conditions. This solution was purified by precipitation of silicon species by addition of HCl up to pH = 1, and used for preparing hydrocalumite (Ca2Al(OH)6Cl·2H2O) by the coprecipitation method. The ef...

Descripción completa

Detalles Bibliográficos
Autores: Jiménez, Alejandro, Misol, Alexander, Morato, Álvaro, Rives, Vicente, Vicente, Miguel Ángel, Gil Bravo, Antonio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
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:2454/41500
Acceso en línea:https://hdl.handle.net/2454/41500
Access Level:acceso abierto
Palabra clave:Aluminium recovery
Crystallinity
Hydrocalumite
Layered double hydroxide
Microwaves ageing
Saline slag
id ES_7f7be66d4e95a20a87f97b6bc3851b7e
oai_identifier_str oai:academica-e.unavarra.es:2454/41500
network_acronym_str ES
network_name_str España
repository_id_str
spelling Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slagJiménez, AlejandroMisol, AlexanderMorato, ÁlvaroRives, VicenteVicente, Miguel ÁngelGil Bravo, AntonioAluminium recoveryCrystallinityHydrocalumiteLayered double hydroxideMicrowaves ageingSaline slagAluminium was successfully extracted by treating an aluminium slag with aqueous NaOH under reflux conditions. This solution was purified by precipitation of silicon species by addition of HCl up to pH = 1, and used for preparing hydrocalumite (Ca2Al(OH)6Cl·2H2O) by the coprecipitation method. The effect of temperature on the properties of hydrocalumite prepared under microwave (MW) irradiation was studied. Characterization of the obtained solid was carried out by powder X-ray diffraction (PXRD), thermal analysis, FT–IR spectroscopy, chemical analysis, electron microscopy and N2 adsorption–desorption at −196 °C. The results showed that the use of the extracted aluminium solution allowed to obtain hydrocalumite by the coprecipitation method and that the temperature of the MW ageing treatment had a large effect on the formation of side phases, in addition to hydrocalumite. The results here reported demonstrate that formation of hydrocalumite is an effective method for the recovering of aluminium from its waste.This work was supported by 'Memoria de D. Samuel Solórzano Barruso' Foundation (FS/11–2020). AJ thanks Universidad de Salamanca and Banco Santander for a predoctoral contract. A. Misol thanks Junta de Castilla y León and ERDF for a predoctoral contract. AG also thanks Santander Bank for funding through the Research Intensification Program.ElsevierInstitute for Advanced Materials and Mathematics - INAMAT22021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/41500reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglés© 2021 The Authors. Creative Commons Attribution‐NonCommercial‐NoDerivs Licensehttps://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/415002026-06-17T12:41:47Z
dc.title.none.fl_str_mv Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag
title Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag
spellingShingle Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag
Jiménez, Alejandro
Aluminium recovery
Crystallinity
Hydrocalumite
Layered double hydroxide
Microwaves ageing
Saline slag
title_short Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag
title_full Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag
title_fullStr Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag
title_full_unstemmed Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag
title_sort Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag
dc.creator.none.fl_str_mv Jiménez, Alejandro
Misol, Alexander
Morato, Álvaro
Rives, Vicente
Vicente, Miguel Ángel
Gil Bravo, Antonio
author Jiménez, Alejandro
author_facet Jiménez, Alejandro
Misol, Alexander
Morato, Álvaro
Rives, Vicente
Vicente, Miguel Ángel
Gil Bravo, Antonio
author_role author
author2 Misol, Alexander
Morato, Álvaro
Rives, Vicente
Vicente, Miguel Ángel
Gil Bravo, Antonio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Institute for Advanced Materials and Mathematics - INAMAT2
dc.subject.none.fl_str_mv Aluminium recovery
Crystallinity
Hydrocalumite
Layered double hydroxide
Microwaves ageing
Saline slag
topic Aluminium recovery
Crystallinity
Hydrocalumite
Layered double hydroxide
Microwaves ageing
Saline slag
description Aluminium was successfully extracted by treating an aluminium slag with aqueous NaOH under reflux conditions. This solution was purified by precipitation of silicon species by addition of HCl up to pH = 1, and used for preparing hydrocalumite (Ca2Al(OH)6Cl·2H2O) by the coprecipitation method. The effect of temperature on the properties of hydrocalumite prepared under microwave (MW) irradiation was studied. Characterization of the obtained solid was carried out by powder X-ray diffraction (PXRD), thermal analysis, FT–IR spectroscopy, chemical analysis, electron microscopy and N2 adsorption–desorption at −196 °C. The results showed that the use of the extracted aluminium solution allowed to obtain hydrocalumite by the coprecipitation method and that the temperature of the MW ageing treatment had a large effect on the formation of side phases, in addition to hydrocalumite. The results here reported demonstrate that formation of hydrocalumite is an effective method for the recovering of aluminium from its waste.
publishDate 2021
dc.date.none.fl_str_mv 2021
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/2454/41500
url https://hdl.handle.net/2454/41500
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv © 2021 The Authors. Creative Commons Attribution‐NonCommercial‐NoDerivs License
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © 2021 The Authors. Creative Commons Attribution‐NonCommercial‐NoDerivs License
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869411827959463936
score 15,811543

Similares en LA Referencia