Synthesis of thiol-functionalized hydrotalcite and its application for adsorption of uranium (VI)
The thiol-functional hydrotalcite (Mg/Al-LDO-SH) composite materials were prepared and characterized by EDS, SEM, FT-IR and XRD. The variables influencing the adsorption capacity were investigated. Results show that 3-MPTMS got success in material surface modification. The best optimization conditio...
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Veröffentlicht in: | Journal of radioanalytical and nuclear chemistry 2019-03, Vol.319 (3), p.791-803 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The thiol-functional hydrotalcite (Mg/Al-LDO-SH) composite materials were prepared and characterized by EDS, SEM, FT-IR and XRD. The variables influencing the adsorption capacity were investigated. Results show that 3-MPTMS got success in material surface modification. The best optimization condition for adsorption experiment was at time 150 min, pH 3.0, temperature 30 °C, initial uranium (VI) concentration 30 mg L
−1
, adsorption dosage 10 mg with 99.06% of adsorption efficiency and 1545.32 mg g
−1
of adsorption capacity. Kinetics data follow the pseudo-second-order model and equilibrium data fit the Freundlich isotherm model very well. Thermodynamic studies show that adsorption process is spontaneous and exothermic. |
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ISSN: | 0236-5731 1588-2780 |
DOI: | 10.1007/s10967-018-6376-1 |