Thorium Ion Uptake by Zeolite a Synthesized from Natural Clinoptilolite Tuffs
Natural clinoptilolite tuffs from the Semnan region of Iran were used for the synthesis of zeolite A. The tuffs and synthesized zeolite were characterized by XRD and XRF methods. The sorption behaviour of the synthesized zeolite towards thorium ions was studied. The corresponding adsorption constant...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2004-11-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263617043026514 |
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| author | H. Faghihian M.G. Maragheh M.K. Amini A.R. Nezamzadeh |
| author_facet | H. Faghihian M.G. Maragheh M.K. Amini A.R. Nezamzadeh |
| author_sort | H. Faghihian |
| collection | DOAJ |
| description | Natural clinoptilolite tuffs from the Semnan region of Iran were used for the synthesis of zeolite A. The tuffs and synthesized zeolite were characterized by XRD and XRF methods. The sorption behaviour of the synthesized zeolite towards thorium ions was studied. The corresponding adsorption constant was calculated using the Lagergren equation. The measured values of the distribution coefficient (K d ) indicated that Th(IV) ion uptake was higher at lower initial concentrations, higher temperature and higher pH values. The thermodynamic parameters for the exchange were calculated through the construction of ion-exchange isotherms at 298, 323 and 343 K, respectively. The dynamic adsorption of Th(IV) ions was also studied by passing the solution through a column in the presence and absence of sodium ions. |
| format | Article |
| id | doaj-art-9e9f4f358e7e47beaa247462dde682a7 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2004-11-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-9e9f4f358e7e47beaa247462dde682a72025-01-02T22:37:24ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382004-11-012210.1260/0263617043026514Thorium Ion Uptake by Zeolite a Synthesized from Natural Clinoptilolite TuffsH. Faghihian0M.G. Maragheh1M.K. Amini2A.R. Nezamzadeh3 Department of Chemistry, University of Isfahan, Isfahan, Iran Atomic Energy Organization of Iran, Tehran, Iran Department of Chemistry, University of Isfahan, Isfahan, Iran Department of Chemistry, University of Isfahan, Isfahan, IranNatural clinoptilolite tuffs from the Semnan region of Iran were used for the synthesis of zeolite A. The tuffs and synthesized zeolite were characterized by XRD and XRF methods. The sorption behaviour of the synthesized zeolite towards thorium ions was studied. The corresponding adsorption constant was calculated using the Lagergren equation. The measured values of the distribution coefficient (K d ) indicated that Th(IV) ion uptake was higher at lower initial concentrations, higher temperature and higher pH values. The thermodynamic parameters for the exchange were calculated through the construction of ion-exchange isotherms at 298, 323 and 343 K, respectively. The dynamic adsorption of Th(IV) ions was also studied by passing the solution through a column in the presence and absence of sodium ions.https://doi.org/10.1260/0263617043026514 |
| spellingShingle | H. Faghihian M.G. Maragheh M.K. Amini A.R. Nezamzadeh Thorium Ion Uptake by Zeolite a Synthesized from Natural Clinoptilolite Tuffs Adsorption Science & Technology |
| title | Thorium Ion Uptake by Zeolite a Synthesized from Natural Clinoptilolite Tuffs |
| title_full | Thorium Ion Uptake by Zeolite a Synthesized from Natural Clinoptilolite Tuffs |
| title_fullStr | Thorium Ion Uptake by Zeolite a Synthesized from Natural Clinoptilolite Tuffs |
| title_full_unstemmed | Thorium Ion Uptake by Zeolite a Synthesized from Natural Clinoptilolite Tuffs |
| title_short | Thorium Ion Uptake by Zeolite a Synthesized from Natural Clinoptilolite Tuffs |
| title_sort | thorium ion uptake by zeolite a synthesized from natural clinoptilolite tuffs |
| url | https://doi.org/10.1260/0263617043026514 |
| work_keys_str_mv | AT hfaghihian thoriumionuptakebyzeoliteasynthesizedfromnaturalclinoptilolitetuffs AT mgmaragheh thoriumionuptakebyzeoliteasynthesizedfromnaturalclinoptilolitetuffs AT mkamini thoriumionuptakebyzeoliteasynthesizedfromnaturalclinoptilolitetuffs AT arnezamzadeh thoriumionuptakebyzeoliteasynthesizedfromnaturalclinoptilolitetuffs |