Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (10): 156 doi: 10.1007/s41365-019-0674-3

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

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

Mohamed F. Cheira1, Hamed I. Mira1 , Ahmed K. Sakr1 , Saad A. Mohamed2   

  1. 1Nuclear Materials Authority, P.O. Box 530, Maadi, Cairo, Egypt
    2Chemistry Dept., Faculty of Science, Ain Shams University, Cairo, Egypt
  • Received:2019-03-02 Revised:2019-04-22 Accepted:2019-05-05
  • Contact: Mohamed F. Cheira E-mail: mf.farid2008@yahoo.com
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Mohamed F. Cheira, Hamed I. Mira, Ahmed K. Sakr, Saad A. Mohamed. Adsorption of U(VI) on low-cost sorbent from acid solution: equilibrium, Kinetic, and thermodynamic assessments.Nuclear Science and Techniques, 2019, 30(10): 156     doi: 10.1007/s41365-019-0674-3

Abstract: 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.

Key words: Waste clay, Gallic acid, Modification, Uranium adsorption, Equilibrium kinetics