Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slag
[EN] This work describes a valorization procedure for one of the most important wastes generated during aluminum recycling, namely, saline slag. This procedure was divided in two steps: a) recovery of aluminum or its compounds in various fractions, and b) the use of one of those fractions in the syn...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universidad de Salamanca (USAL) |
| Repositorio: | GREDOS. Repositorio Institucional de la Universidad de Salamanca |
| OAI Identifier: | oai:gredos.usal.es:10366/159532 |
| Acceso en línea: | http://hdl.handle.net/10366/159532 |
| Access Level: | acceso abierto |
| Palabra clave: | Saline slag Aluminum recovery Zeolitic materials Pollucite Analcime 2303 Química Inorgánica |
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oai:gredos.usal.es:10366/159532 |
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España |
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Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slagJiménez Martín, AlejandroMisol Gallego, AlexanderMorato, ÁlvaroRives Arnau, Vicente RafaelVicente Rodríguez, Miguel ÁngelGil Bravo, AntonioSaline slagAluminum recoveryZeolitic materialsPolluciteAnalcime2303 Química Inorgánica[EN] This work describes a valorization procedure for one of the most important wastes generated during aluminum recycling, namely, saline slag. This procedure was divided in two steps: a) recovery of aluminum or its compounds in various fractions, and b) the use of one of those fractions in the synthesis of two zeolites: analcime (NaAlSi2O6$H2O) and pollucite (CsAlSi2O6$nH2O). Saline slag was ground, sieved (1 mm), washed and separated into two fractions of different sizes, one larger and another smaller than 0.4 mm. The fraction smaller than 0.4 mm was treated under reflux conditions with NaOH or CsOH solutions. The extraction liquor contained aluminum and alkali metal cations; after adding the necessary amount of Si, hydrothermal synthesis was carried out, obtaining the zeolitic materials. Characterization of the solids obtained was carried out by powder X-ray diffraction, thermal analysis, FTeIR spectroscopy, element chemical analysis and electron microscopy. The valorization procedure proposed in this work showed that a high percentage of Al (close to 45 wt%) can be recovered from the fraction smaller than 0.4 mm and that the liquors extracted with NaOH or CsOH can be used as a source for the hydrothermal synthesis (200 ºC for 24 h) of two zeolites of the analcime family, obtaining in both cases pure and crystalline solids.Publicación en abierto financiada por la Universidad de Salamanca como participante en el Acuerdo Transformativo CRUE-CSIC con Elsevier, 2021-2024Elsevier202420242021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10366/159532reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1595322026-06-07T06:28:51Z |
| dc.title.none.fl_str_mv |
Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slag |
| title |
Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slag |
| spellingShingle |
Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slag Jiménez Martín, Alejandro Saline slag Aluminum recovery Zeolitic materials Pollucite Analcime 2303 Química Inorgánica |
| title_short |
Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slag |
| title_full |
Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slag |
| title_fullStr |
Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slag |
| title_full_unstemmed |
Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slag |
| title_sort |
Synthesis of pollucite and analcime zeolites by recovering aluminum from a saline slag |
| dc.creator.none.fl_str_mv |
Jiménez Martín, Alejandro Misol Gallego, Alexander Morato, Álvaro Rives Arnau, Vicente Rafael Vicente Rodríguez, Miguel Ángel Gil Bravo, Antonio |
| author |
Jiménez Martín, Alejandro |
| author_facet |
Jiménez Martín, Alejandro Misol Gallego, Alexander Morato, Álvaro Rives Arnau, Vicente Rafael Vicente Rodríguez, Miguel Ángel Gil Bravo, Antonio |
| author_role |
author |
| author2 |
Misol Gallego, Alexander Morato, Álvaro Rives Arnau, Vicente Rafael Vicente Rodríguez, Miguel Ángel Gil Bravo, Antonio |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Saline slag Aluminum recovery Zeolitic materials Pollucite Analcime 2303 Química Inorgánica |
| topic |
Saline slag Aluminum recovery Zeolitic materials Pollucite Analcime 2303 Química Inorgánica |
| description |
[EN] This work describes a valorization procedure for one of the most important wastes generated during aluminum recycling, namely, saline slag. This procedure was divided in two steps: a) recovery of aluminum or its compounds in various fractions, and b) the use of one of those fractions in the synthesis of two zeolites: analcime (NaAlSi2O6$H2O) and pollucite (CsAlSi2O6$nH2O). Saline slag was ground, sieved (1 mm), washed and separated into two fractions of different sizes, one larger and another smaller than 0.4 mm. The fraction smaller than 0.4 mm was treated under reflux conditions with NaOH or CsOH solutions. The extraction liquor contained aluminum and alkali metal cations; after adding the necessary amount of Si, hydrothermal synthesis was carried out, obtaining the zeolitic materials. Characterization of the solids obtained was carried out by powder X-ray diffraction, thermal analysis, FTeIR spectroscopy, element chemical analysis and electron microscopy. The valorization procedure proposed in this work showed that a high percentage of Al (close to 45 wt%) can be recovered from the fraction smaller than 0.4 mm and that the liquors extracted with NaOH or CsOH can be used as a source for the hydrothermal synthesis (200 ºC for 24 h) of two zeolites of the analcime family, obtaining in both cases pure and crystalline solids. |
| publishDate |
2021 |
| dc.date.none.fl_str_mv |
2021 2024 2024 |
| 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 |
http://hdl.handle.net/10366/159532 |
| url |
http://hdl.handle.net/10366/159532 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.rights.none.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
Elsevier |
| publisher.none.fl_str_mv |
Elsevier |
| dc.source.none.fl_str_mv |
reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca instname:Universidad de Salamanca (USAL) |
| instname_str |
Universidad de Salamanca (USAL) |
| reponame_str |
GREDOS. Repositorio Institucional de la Universidad de Salamanca |
| collection |
GREDOS. Repositorio Institucional de la Universidad de Salamanca |
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|
| repository.mail.fl_str_mv |
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1869423786878566400 |
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15,81155 |