Next Article in Journal
Synthesis and 3D Printing of Conducting Alginate–Polypyrrole Ionomers
Next Article in Special Issue
Characterization of Enriched Meat-Based Pâté Manufactured with Oleogels as Fat Substitutes
Previous Article in Journal / Special Issue
Investigation of Gel Properties of Novel Cryo-Clay-Silica Polymer Networks
Article

Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate

1
Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
2
Nuclear Materials Authority, POB 530, El-Maadi, Cairo11835, Egypt
3
Department of Nuclear Engineering and Radiological Sciences (NERS), Shanghai Jiao Tong University, Shanghai 200240, China
4
Polymers Composites and hybrids (PCH), IMT-Mines Ales, 6, avenue de Clavières, F-30319 Alès cedex, France
*
Authors to whom correspondence should be addressed.
Received: 27 February 2020 / Revised: 27 March 2020 / Accepted: 28 March 2020 / Published: 30 March 2020
(This article belongs to the Special Issue Gels: 6th Anniversary)
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−1). 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. View Full-Text
Keywords: algal/Polyethylenimine beads; quaternization; uranyl sorption and desorption; sorption isotherms and uptake kinetics; metal recovery from ore leachates algal/Polyethylenimine beads; quaternization; uranyl sorption and desorption; sorption isotherms and uptake kinetics; metal recovery from ore leachates
Show Figures

Figure 1

MDPI and ACS Style

Hamza, M.F.; Mubark, A.E.; Wei, Y.; Vincent, T.; Guibal, E. Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate. Gels 2020, 6, 12. https://doi.org/10.3390/gels6020012

AMA Style

Hamza MF, Mubark AE, Wei Y, Vincent T, Guibal E. Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate. Gels. 2020; 6(2):12. https://doi.org/10.3390/gels6020012

Chicago/Turabian Style

Hamza, Mohammed F., Amal E. Mubark, Yuezou Wei, Thierry Vincent, and Eric Guibal. 2020. "Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate" Gels 6, no. 2: 12. https://doi.org/10.3390/gels6020012

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop