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Kinetic and thermodynamic studies for cesium removal from low-level liquid radioactive waste using impregnated polymeric material

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Abstract

A novel polymeric impregnated material was prepared by loading 4,4′(5′)di-t-butylbenzo-18-crown-6 (DtBB18C6) onto poly(acrylamide-acrylic acid-acrylonitrile)-N,N′-methylenediacrylamide [P(AM-AA-AN)-DAM]. The sorption of 137Cs onto P(AM-AA-AN)-DAM/DtBB18C6 was studied using batch equilibrium technique with respect to the pH, contact time, and temperature. The applicability to treatment of low-level liquid radioactive waste was examined. The free energy (ΔG 0), enthalpy (ΔH 0), and entropy (ΔS 0) of the sorption were calculated. These parameters showed that the sorption of 137Cs onto P(AM-AA-AN)-DAM/DtBB18C6 was spontaneous and endothermic in nature. The Lagergren first-order, pseudo-second-order, and homogeneous particle diffusion models were tested kinetically to describe the reaction mechanism. The experimental data were fitted well by the pseudo-second-order kinetic model.

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Authors and Affiliations

  1. Hot Laboratories and Waste Management Center, Atomic Energy Authority, Post Code 13759, Abu Zaabal, Cairo, Egypt

    M. F. Attallah, E. H. Borai & K. F. Allan

Authors
  1. M. F. Attallah
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  2. E. H. Borai
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  3. K. F. Allan
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Corresponding author

Correspondence to M. F. Attallah.

Additional information

Published in Russian in Radiokhimiya, 2009, Vol. 51, No. 6, pp. 541–545.

The text was submitted by the authors in English.

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Attallah, M.F., Borai, E.H. & Allan, K.F. Kinetic and thermodynamic studies for cesium removal from low-level liquid radioactive waste using impregnated polymeric material. Radiochemistry 51, 622–627 (2009). https://doi.org/10.1134/S1066362209060113

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  • DOI: https://doi.org/10.1134/S1066362209060113

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