Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag
| dc.contributor.author | Jiménez, Alejandro | |
| dc.contributor.author | Misol, Alexander | |
| dc.contributor.author | Morato, Álvaro | |
| dc.contributor.author | Rives, Vicente | |
| dc.contributor.author | Vicente, Miguel Ángel | |
| dc.contributor.author | Gil Bravo, Antonio | |
| dc.contributor.department | Institute for Advanced Materials and Mathematics - INAMAT2 | en |
| dc.date.accessioned | 2021-12-28T10:45:05Z | |
| dc.date.available | 2021-12-28T10:45:05Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | 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. | en |
| dc.description.sponsorship | 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. | en |
| dc.format.extent | 9 p. | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | 10.1016/j.clay.2021.106217 | |
| dc.identifier.issn | 0169-1317 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/41500 | |
| dc.language.iso | eng | en |
| dc.publisher | Elsevier | en |
| dc.relation.ispartof | Applied Clay Science, 212 | en |
| dc.relation.publisherversion | http://doi.org/10.1016/j.clay.2021.106217 | |
| dc.rights | © 2021 The Authors. Creative Commons Attribution‐NonCommercial‐NoDerivs License | es_ES |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Aluminium recovery | en |
| dc.subject | Crystallinity | en |
| dc.subject | Hydrocalumite | en |
| dc.subject | Layered double hydroxide | en |
| dc.subject | Microwaves ageing | en |
| dc.subject | Saline slag | en |
| dc.title | Optimization of hydrocalumite preparation under microwave irradiation for recovering aluminium from a saline slag | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/publishedVersion | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | cd12e590-cb42-47d5-a642-f60eeee624ec | |
| relation.isAuthorOfPublication.latestForDiscovery | cd12e590-cb42-47d5-a642-f60eeee624ec |