Use of Manganese Oxide-Coated Sand for the Adsorption of Uranium(VI) Ions from Aqueous Solution Using a Column Mode
Continuous fixed-bed studies were undertaken to evaluate the performance of manganese oxide-coated sand (MOCS) as an adsorbent for the removal of uranium(VI) ions from aqueous solution under the effect of various process parameters such as the bed depth, the flow rate, the presence of salt and the i...
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SAGE Publishing
2010-04-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.28.4.313 |
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| author | Weihua Zou Jiyun Song Ke Li Runping Han |
| author_facet | Weihua Zou Jiyun Song Ke Li Runping Han |
| author_sort | Weihua Zou |
| collection | DOAJ |
| description | Continuous fixed-bed studies were undertaken to evaluate the performance of manganese oxide-coated sand (MOCS) as an adsorbent for the removal of uranium(VI) ions from aqueous solution under the effect of various process parameters such as the bed depth, the flow rate, the presence of salt and the initial U(VI) ion concentration. The U(VI) ion uptake by MOCS increased with initial U(VI) ion concentration and bed height, but decreased as the flow rate increased. A shorter breakthrough time was observed in the presence of salt. The experimental data obtained from the breakthrough curves were analyzed using the Thomas model. The BDST model was also applied to predict the service times for other flow rates and initial concentrations. The results showed that the Thomas model was suitable for the description of the whole breakthrough curve, while the data were in good agreement with the BDST model. The columns were regenerated by eluting the bound U(VI) ions with 0.5 mol/ℓ HNO 3 solution after the adsorption studies. MOCS could be re-used to adsorb U(VI) ions at a comparable capacity. Compared to virgin sand, the removal of U(VI) ions from MOCS proceeded more readily. |
| format | Article |
| id | doaj-art-357f2b5916934036903a55c49d07c1c7 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2010-04-01 |
| publisher | SAGE Publishing |
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| series | Adsorption Science & Technology |
| spelling | doaj-art-357f2b5916934036903a55c49d07c1c72025-01-03T00:11:56ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382010-04-012810.1260/0263-6174.28.4.313Use of Manganese Oxide-Coated Sand for the Adsorption of Uranium(VI) Ions from Aqueous Solution Using a Column ModeWeihua Zou0Jiyun Song1Ke Li2Runping Han3 School of Chemical Engineering and Energy, Zhengzhou University, 100, Kexue Road, Zhengzhou, Henan 450001, P. R. China Department of Chemistry, Zhengzhou University, 100, Kexue Road, Zhengzhou, Henan 450001, P. R. China School of Chemical Engineering and Energy, Zhengzhou University, 100, Kexue Road, Zhengzhou, Henan 450001, P. R. China Department of Chemistry, Zhengzhou University, 100, Kexue Road, Zhengzhou, Henan 450001, P. R. ChinaContinuous fixed-bed studies were undertaken to evaluate the performance of manganese oxide-coated sand (MOCS) as an adsorbent for the removal of uranium(VI) ions from aqueous solution under the effect of various process parameters such as the bed depth, the flow rate, the presence of salt and the initial U(VI) ion concentration. The U(VI) ion uptake by MOCS increased with initial U(VI) ion concentration and bed height, but decreased as the flow rate increased. A shorter breakthrough time was observed in the presence of salt. The experimental data obtained from the breakthrough curves were analyzed using the Thomas model. The BDST model was also applied to predict the service times for other flow rates and initial concentrations. The results showed that the Thomas model was suitable for the description of the whole breakthrough curve, while the data were in good agreement with the BDST model. The columns were regenerated by eluting the bound U(VI) ions with 0.5 mol/ℓ HNO 3 solution after the adsorption studies. MOCS could be re-used to adsorb U(VI) ions at a comparable capacity. Compared to virgin sand, the removal of U(VI) ions from MOCS proceeded more readily.https://doi.org/10.1260/0263-6174.28.4.313 |
| spellingShingle | Weihua Zou Jiyun Song Ke Li Runping Han Use of Manganese Oxide-Coated Sand for the Adsorption of Uranium(VI) Ions from Aqueous Solution Using a Column Mode Adsorption Science & Technology |
| title | Use of Manganese Oxide-Coated Sand for the Adsorption of Uranium(VI) Ions from Aqueous Solution Using a Column Mode |
| title_full | Use of Manganese Oxide-Coated Sand for the Adsorption of Uranium(VI) Ions from Aqueous Solution Using a Column Mode |
| title_fullStr | Use of Manganese Oxide-Coated Sand for the Adsorption of Uranium(VI) Ions from Aqueous Solution Using a Column Mode |
| title_full_unstemmed | Use of Manganese Oxide-Coated Sand for the Adsorption of Uranium(VI) Ions from Aqueous Solution Using a Column Mode |
| title_short | Use of Manganese Oxide-Coated Sand for the Adsorption of Uranium(VI) Ions from Aqueous Solution Using a Column Mode |
| title_sort | use of manganese oxide coated sand for the adsorption of uranium vi ions from aqueous solution using a column mode |
| url | https://doi.org/10.1260/0263-6174.28.4.313 |
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