Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous Solution
The porous nature of alumina has been investigated using various techniques. The values obtained for moisture content, surface area, pore volume, average particle size and porosity were 22%, 116 m 2 /g, 0.76 cm 3 /g, 17.0±0.5 μm and 68.0%, respectively. The adsorption isotherms of Nd III , Pr III an...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publications
1992-03-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361749200900102 |
| _version_ | 1797285462136586240 |
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| author | M. Saleem M. Afzal F. Mahmood A. Ali |
| author_facet | M. Saleem M. Afzal F. Mahmood A. Ali |
| author_sort | M. Saleem |
| collection | DOAJ |
| description | The porous nature of alumina has been investigated using various techniques. The values obtained for moisture content, surface area, pore volume, average particle size and porosity were 22%, 116 m 2 /g, 0.76 cm 3 /g, 17.0±0.5 μm and 68.0%, respectively. The adsorption isotherms of Nd III , Pr III and Er III on alumina from aqueous solution have been obtained at different temperatures. All these adsorption isotherms obey the Langmuir, Freundlich and Dubinin-Radushkevich isotherm equations. Thermodynamic parameters such as the free energy, entropy and enthalpy of adsorption have been computed and interpreted. It is noteworthy that the adsorption of Pr III and Nd III increases with decreasing temperature while the reverse is observed for Er III . |
| first_indexed | 2024-03-07T18:03:29Z |
| format | Article |
| id | doaj.art-4c678f662e7b4cb09aebce3f559019a3 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T18:03:29Z |
| publishDate | 1992-03-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-4c678f662e7b4cb09aebce3f559019a32024-03-02T10:08:40ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40381992-03-01910.1177/026361749200900102Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous SolutionM. SaleemM. AfzalF. MahmoodA. AliThe porous nature of alumina has been investigated using various techniques. The values obtained for moisture content, surface area, pore volume, average particle size and porosity were 22%, 116 m 2 /g, 0.76 cm 3 /g, 17.0±0.5 μm and 68.0%, respectively. The adsorption isotherms of Nd III , Pr III and Er III on alumina from aqueous solution have been obtained at different temperatures. All these adsorption isotherms obey the Langmuir, Freundlich and Dubinin-Radushkevich isotherm equations. Thermodynamic parameters such as the free energy, entropy and enthalpy of adsorption have been computed and interpreted. It is noteworthy that the adsorption of Pr III and Nd III increases with decreasing temperature while the reverse is observed for Er III .https://doi.org/10.1177/026361749200900102 |
| spellingShingle | M. Saleem M. Afzal F. Mahmood A. Ali Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous Solution Adsorption Science & Technology |
| title | Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous Solution |
| title_full | Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous Solution |
| title_fullStr | Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous Solution |
| title_full_unstemmed | Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous Solution |
| title_short | Surface Characterization and Thermodynamics of Adsorption of Pr, Nd and Er on Alumina from Aqueous Solution |
| title_sort | surface characterization and thermodynamics of adsorption of pr nd and er on alumina from aqueous solution |
| url | https://doi.org/10.1177/026361749200900102 |
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