Scandium Recovery from Aqueous Solution by Adsorption Processes in Low-Temperature-Activated Alumina Products
In this paper, we studied the scandium adsorption from aqueous solutions on the surface of low-temperature-activated alumina products (GDAH). The GDAH samples are industrially manufactured, coming from the Bayer production cycle of the Sierra Leone bauxite as aluminium hydroxide, and further, by dry...
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MDPI AG
2022-09-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/17/10142 |
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| author | Diana Daminescu Narcis Duţeanu Mihaela Ciopec Adina Negrea Petru Negrea Nicoleta Sorina Nemeş Adina Berbecea Gheorghe Dobra Sorin Iliev Lucian Cotet Alina Boiangiu Laurentiu Filipescu |
| author_facet | Diana Daminescu Narcis Duţeanu Mihaela Ciopec Adina Negrea Petru Negrea Nicoleta Sorina Nemeş Adina Berbecea Gheorghe Dobra Sorin Iliev Lucian Cotet Alina Boiangiu Laurentiu Filipescu |
| author_sort | Diana Daminescu |
| collection | DOAJ |
| description | In this paper, we studied the scandium adsorption from aqueous solutions on the surface of low-temperature-activated alumina products (GDAH). The GDAH samples are industrially manufactured, coming from the Bayer production cycle of the Sierra Leone bauxite as aluminium hydroxide, and further, by drying, milling, classifying and thermally treating up to dehydroxilated alumina products at low temperature. All experiments related to hydroxide aluminium activation were conducted at temperature values of 260, 300 and 400 °C on samples having the following particle sizes: <10 µm, 20 µm, <45 µm and <150 µm, respectively. The low-temperature-activated alumina products were characterised, and the results were published in our previous papers. In this paper, we studied the scandium adsorption process on the above materials and related thermodynamic and kinetic studies. |
| first_indexed | 2024-03-10T01:41:52Z |
| format | Article |
| id | doaj.art-f4ab8f4d98784b0e88c3863f1a48e8f1 |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-10T01:41:52Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-f4ab8f4d98784b0e88c3863f1a48e8f12023-11-23T13:23:44ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-09-0123171014210.3390/ijms231710142Scandium Recovery from Aqueous Solution by Adsorption Processes in Low-Temperature-Activated Alumina ProductsDiana Daminescu0Narcis Duţeanu1Mihaela Ciopec2Adina Negrea3Petru Negrea4Nicoleta Sorina Nemeş5Adina Berbecea6Gheorghe Dobra7Sorin Iliev8Lucian Cotet9Alina Boiangiu10Laurentiu Filipescu11Faculty of Industrial Chemistry and Environmental Engineering, Polytechnica University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, RomaniaFaculty of Industrial Chemistry and Environmental Engineering, Polytechnica University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, RomaniaFaculty of Industrial Chemistry and Environmental Engineering, Polytechnica University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, RomaniaFaculty of Industrial Chemistry and Environmental Engineering, Polytechnica University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, RomaniaFaculty of Industrial Chemistry and Environmental Engineering, Polytechnica University of Timişoara, Victoriei Square, no. 2, 300006 Timisoara, RomaniaRenewable Energy Research Institute-ICER, Polytechnica University of Timişoara, Gavril Musicescu Street, no. 138, 300774 Timisoara, RomaniaSoil Sciences Department, Banat’s University of Agricultural Sciences and Veterinary Medicine “King Mihai I of Romania” from Timisoara, Calea Aradului, no. 119, 300645 Timisoara, RomaniaAlro, S.A., Pitesti Street, no.116., 230048 Slatina, RomaniaAlum, S.A., Isaccei Street no. 83, 820228 Tulcea, RomaniaAlum, S.A., Isaccei Street no. 83, 820228 Tulcea, RomaniaFaculty of Chemical Engineering and Biotechnology, University Politehnica Bucharest, Polizu Street, no. 1-7, 011061 Bucharest, RomaniaFaculty of Chemical Engineering and Biotechnology, University Politehnica Bucharest, Polizu Street, no. 1-7, 011061 Bucharest, RomaniaIn this paper, we studied the scandium adsorption from aqueous solutions on the surface of low-temperature-activated alumina products (GDAH). The GDAH samples are industrially manufactured, coming from the Bayer production cycle of the Sierra Leone bauxite as aluminium hydroxide, and further, by drying, milling, classifying and thermally treating up to dehydroxilated alumina products at low temperature. All experiments related to hydroxide aluminium activation were conducted at temperature values of 260, 300 and 400 °C on samples having the following particle sizes: <10 µm, 20 µm, <45 µm and <150 µm, respectively. The low-temperature-activated alumina products were characterised, and the results were published in our previous papers. In this paper, we studied the scandium adsorption process on the above materials and related thermodynamic and kinetic studies.https://www.mdpi.com/1422-0067/23/17/10142scandiumactivated aluminaadsorptionkinetic and thermodynamic studies |
| spellingShingle | Diana Daminescu Narcis Duţeanu Mihaela Ciopec Adina Negrea Petru Negrea Nicoleta Sorina Nemeş Adina Berbecea Gheorghe Dobra Sorin Iliev Lucian Cotet Alina Boiangiu Laurentiu Filipescu Scandium Recovery from Aqueous Solution by Adsorption Processes in Low-Temperature-Activated Alumina Products International Journal of Molecular Sciences scandium activated alumina adsorption kinetic and thermodynamic studies |
| title | Scandium Recovery from Aqueous Solution by Adsorption Processes in Low-Temperature-Activated Alumina Products |
| title_full | Scandium Recovery from Aqueous Solution by Adsorption Processes in Low-Temperature-Activated Alumina Products |
| title_fullStr | Scandium Recovery from Aqueous Solution by Adsorption Processes in Low-Temperature-Activated Alumina Products |
| title_full_unstemmed | Scandium Recovery from Aqueous Solution by Adsorption Processes in Low-Temperature-Activated Alumina Products |
| title_short | Scandium Recovery from Aqueous Solution by Adsorption Processes in Low-Temperature-Activated Alumina Products |
| title_sort | scandium recovery from aqueous solution by adsorption processes in low temperature activated alumina products |
| topic | scandium activated alumina adsorption kinetic and thermodynamic studies |
| url | https://www.mdpi.com/1422-0067/23/17/10142 |
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