Synthesis strategies of alumina from aluminum saline slags
Aluminum saline slags is a waste of the metallurgical industry that presents serious environmental problems since it needs very extensive areas for its disposal, the toxicity it causes in the atmosphere and groundwater, in addition to high transportation costs. The valorization of this residue by th...
| Autores: | , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2023 |
| País: | España |
| Recursos: | Universidad Pública de Navarra |
| Repositorio: | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra |
| OAI Identifier: | oai:academica-e.unavarra.es:2454/44920 |
| Acesso em linha: | https://hdl.handle.net/2454/44920 |
| Access Level: | acceso abierto |
| Palavra-chave: | Aluminum Alumina Leaching Precipitation method Aluminum hydroxide Saline slags |
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Synthesis strategies of alumina from aluminum saline slagsGrande López, LucíaVicente, Miguel ÁngelKorili, Sophia A.Gil Bravo, AntonioAluminumAluminaLeachingPrecipitation methodAluminum hydroxideSaline slagsAluminum saline slags is a waste of the metallurgical industry that presents serious environmental problems since it needs very extensive areas for its disposal, the toxicity it causes in the atmosphere and groundwater, in addition to high transportation costs. The valorization of this residue by the synthesis of alumina, a compound widely used in the chemical industry, generates a high impact and great interest. In this work, the strategies for synthesizing alumina from aluminum saline slags are reviewed in a context of growing demand for this metal and environmental crisis. The first sections present the aluminum production processes, both from natural bauxite (primary process) and from the recycling of materials with a high aluminum content (secondary process); paying attention to the waste generated and what environmental problems they produce. The main investigations that have allowed to address the recovery of the waste generated are described below, focusing on the processes of recovery/extraction of the aluminum present in its composition. The aluminum in these residues can be found as a metal or forming other compounds such as simple or mixed oxides. Chemical processes are the most relevant, especially those that deal with the acid and alkaline extraction of the metal. The most important section of the work reports on the methods of synthesis of Al2O3, highlighting the methods of precipitation, sol-gel, hydrothermal synthesis, and combustion, among others. The work ends with a summary and conclusions section.Spanish Ministry of Science and Innovation (MCIN/AEI/10.13039/501100011033) through project PID2020-112656RB-C21. Open access funding provided by Universidad Pública de Navarra.ElsevierCienciasZientziakInstitute for Advanced Materials and Mathematics - INAMAT2Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/44920reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112656RB-C21© 2023 The Author(s). This is an open access article under the CC BY-NC-ND license.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/449202026-06-17T12:41:47Z |
| dc.title.none.fl_str_mv |
Synthesis strategies of alumina from aluminum saline slags |
| title |
Synthesis strategies of alumina from aluminum saline slags |
| spellingShingle |
Synthesis strategies of alumina from aluminum saline slags Grande López, Lucía Aluminum Alumina Leaching Precipitation method Aluminum hydroxide Saline slags |
| title_short |
Synthesis strategies of alumina from aluminum saline slags |
| title_full |
Synthesis strategies of alumina from aluminum saline slags |
| title_fullStr |
Synthesis strategies of alumina from aluminum saline slags |
| title_full_unstemmed |
Synthesis strategies of alumina from aluminum saline slags |
| title_sort |
Synthesis strategies of alumina from aluminum saline slags |
| dc.creator.none.fl_str_mv |
Grande López, Lucía Vicente, Miguel Ángel Korili, Sophia A. Gil Bravo, Antonio |
| author |
Grande López, Lucía |
| author_facet |
Grande López, Lucía Vicente, Miguel Ángel Korili, Sophia A. Gil Bravo, Antonio |
| author_role |
author |
| author2 |
Vicente, Miguel Ángel Korili, Sophia A. Gil Bravo, Antonio |
| author2_role |
author author author |
| dc.contributor.none.fl_str_mv |
Ciencias Zientziak Institute for Advanced Materials and Mathematics - INAMAT2 Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa |
| dc.subject.none.fl_str_mv |
Aluminum Alumina Leaching Precipitation method Aluminum hydroxide Saline slags |
| topic |
Aluminum Alumina Leaching Precipitation method Aluminum hydroxide Saline slags |
| description |
Aluminum saline slags is a waste of the metallurgical industry that presents serious environmental problems since it needs very extensive areas for its disposal, the toxicity it causes in the atmosphere and groundwater, in addition to high transportation costs. The valorization of this residue by the synthesis of alumina, a compound widely used in the chemical industry, generates a high impact and great interest. In this work, the strategies for synthesizing alumina from aluminum saline slags are reviewed in a context of growing demand for this metal and environmental crisis. The first sections present the aluminum production processes, both from natural bauxite (primary process) and from the recycling of materials with a high aluminum content (secondary process); paying attention to the waste generated and what environmental problems they produce. The main investigations that have allowed to address the recovery of the waste generated are described below, focusing on the processes of recovery/extraction of the aluminum present in its composition. The aluminum in these residues can be found as a metal or forming other compounds such as simple or mixed oxides. Chemical processes are the most relevant, especially those that deal with the acid and alkaline extraction of the metal. The most important section of the work reports on the methods of synthesis of Al2O3, highlighting the methods of precipitation, sol-gel, hydrothermal synthesis, and combustion, among others. The work ends with a summary and conclusions section. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2454/44920 |
| url |
https://hdl.handle.net/2454/44920 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112656RB-C21 |
| dc.rights.none.fl_str_mv |
© 2023 The Author(s). This is an open access article under the CC BY-NC-ND license. https://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
© 2023 The Author(s). This is an open access article under the CC BY-NC-ND license. https://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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application/pdf |
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Elsevier |
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Elsevier |
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reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra instname:Universidad Pública de Navarra |
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