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：

暂无

中图分类号：

学科分类号：

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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