Adsorption of U(VI) from acid solution on a low-cost sorbent: equilibrium, kinetic, and thermodynamic assessments

被引：0
|
作者：
Mohamed F. Cheira
Hamed I. Mira
Ahmed K. Sakr
Saad A. Mohamed
机构：
[1] Nuclear Materials Authority,Chemistry Department, Faculty of Science
[2] Ain Shams University,undefined
来源：
Nuclear Science and Techniques | 2019年 / 30卷
关键词：
Waste clay; Gallic acid; Modification; Uranium adsorption; Equilibrium kinetics;
D O I：
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摘要：
In this paper, waste clay was cured with ethyl acetate to obtain treated clay (TC), which was modified with gallic acid to obtain a low-cost sorbent that was characterized by EDX, SEM, and FTIR analysis. Uranium(VI) adsorption was achieved using the batch adsorption method on the TC and gallic acid-modified treated clay (GMTC). The maximum uptakes of U(VI) on TC and GMTC were 37.2 and 193.0 mg/g, respectively. The U(VI) adsorption kinetics on the TC and GMTC sorbents were well-fitted by the pseudo-second-order mechanism, and the adsorption equilibrium followed the Langmuir model. The optimum parameters were applied to El Sela leach solution for uranium recovery.
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