Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate
The necessity to recover uranium from dilute solutions (for environmental/safety and resource management) is driving research towards developing new sorbents. This study focuses on the enhancement of U(VI) sorption properties of composite algal/Polyethylenimine beads through the quaternization of th...
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MDPI AG
2020-03-01
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| Online Access: | https://www.mdpi.com/2310-2861/6/2/12 |
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| author | Mohammed F. Hamza Amal E. Mubark Yuezou Wei Thierry Vincent Eric Guibal |
| author_facet | Mohammed F. Hamza Amal E. Mubark Yuezou Wei Thierry Vincent Eric Guibal |
| author_sort | Mohammed F. Hamza |
| collection | DOAJ |
| description | The necessity to recover uranium from dilute solutions (for environmental/safety and resource management) is driving research towards developing new sorbents. This study focuses on the enhancement of U(VI) sorption properties of composite algal/Polyethylenimine beads through the quaternization of the support (by reaction with glycidyltrimethylammonium chloride). The sorbent is fully characterized by FTIR, XPS for confirming the contribution of protonated amine and quaternary ammonium groups on U(VI) binding (with possible contribution of hydroxyl and carboxyl groups, depending on the pH). The sorption properties are investigated in batch with reference to pH effect (optimum value: pH 4), uptake kinetics (equilibrium: 40 min) and sorption isotherms (maximum sorption capacity: 0.86 mmol U g<sup>−1</sup>). Metal desorption (with 0.5 M NaCl/0.5 M HCl) is highly efficient and the sorbent can be reused for five cycles with limited decrease in performance. The sorbent is successfully applied to the selective recovery of U(VI) from acidic leachate of uranium ore, after pre-treatment (cementation of copper, precipitation of rare earth elements with oxalate, and precipitation of iron). A pure yellow cake is obtained after precipitation of the eluate. |
| first_indexed | 2024-03-09T06:18:00Z |
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| institution | Directory Open Access Journal |
| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-09T06:18:00Z |
| publishDate | 2020-03-01 |
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| record_format | Article |
| series | Gels |
| spelling | doaj.art-a40363035f1b411eb8982991f5c6c2462023-12-03T11:50:39ZengMDPI AGGels2310-28612020-03-01621210.3390/gels6020012Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic LeachateMohammed F. Hamza0Amal E. Mubark1Yuezou Wei2Thierry Vincent3Eric Guibal4Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, ChinaNuclear Materials Authority, POB 530, El-Maadi, Cairo11835, EgyptGuangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, ChinaPolymers Composites and hybrids (PCH), IMT-Mines Ales, 6, avenue de Clavières, F-30319 Alès cedex, FrancePolymers Composites and hybrids (PCH), IMT-Mines Ales, 6, avenue de Clavières, F-30319 Alès cedex, FranceThe necessity to recover uranium from dilute solutions (for environmental/safety and resource management) is driving research towards developing new sorbents. This study focuses on the enhancement of U(VI) sorption properties of composite algal/Polyethylenimine beads through the quaternization of the support (by reaction with glycidyltrimethylammonium chloride). The sorbent is fully characterized by FTIR, XPS for confirming the contribution of protonated amine and quaternary ammonium groups on U(VI) binding (with possible contribution of hydroxyl and carboxyl groups, depending on the pH). The sorption properties are investigated in batch with reference to pH effect (optimum value: pH 4), uptake kinetics (equilibrium: 40 min) and sorption isotherms (maximum sorption capacity: 0.86 mmol U g<sup>−1</sup>). Metal desorption (with 0.5 M NaCl/0.5 M HCl) is highly efficient and the sorbent can be reused for five cycles with limited decrease in performance. The sorbent is successfully applied to the selective recovery of U(VI) from acidic leachate of uranium ore, after pre-treatment (cementation of copper, precipitation of rare earth elements with oxalate, and precipitation of iron). A pure yellow cake is obtained after precipitation of the eluate.https://www.mdpi.com/2310-2861/6/2/12algal/Polyethylenimine beadsquaternizationuranyl sorption and desorptionsorption isotherms and uptake kineticsmetal recovery from ore leachates |
| spellingShingle | Mohammed F. Hamza Amal E. Mubark Yuezou Wei Thierry Vincent Eric Guibal Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate Gels algal/Polyethylenimine beads quaternization uranyl sorption and desorption sorption isotherms and uptake kinetics metal recovery from ore leachates |
| title | Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate |
| title_full | Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate |
| title_fullStr | Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate |
| title_full_unstemmed | Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate |
| title_short | Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate |
| title_sort | quaternization of composite algal pei beads for enhanced uranium sorption application to ore acidic leachate |
| topic | algal/Polyethylenimine beads quaternization uranyl sorption and desorption sorption isotherms and uptake kinetics metal recovery from ore leachates |
| url | https://www.mdpi.com/2310-2861/6/2/12 |
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