The Fate of Gd(III) Sorption by Novel Microporous Chelating Resin

Document Type : Original Article

Authors

1 Nuclear fuel technology department, Hot laboratories center, Egyptian Atomic Energy Authority

2 Egyptian Atomic Energy Authority

3 Egyptian Atomic energy Authority

4 menoufia univeristy

Abstract

Sorption of Gd(III) by a novel microporous chelating resin Hp-8 from aqueous solutions is investigated in this studyat different operating conditions. Characterization of Hp-8 was investigated. Solution pH hada dramatic influence on the uptake in batch process. It was found that pH 2.5 was the best one at the present experimental set. The equilibrium sorption data were fitted to different isotherm models and it is found that both Freundlich and D-R models were able to accurately represent the findings. Based on the D-R isotherm data, the employed resin exhibited maximum adsorption capacity of about 51 mg/g. The three thermodynamic parameters for the present process of adsorption were estimated with values of enthalpy ∆Ho = - 4.473x10-3, an entropy ∆So = 0.013 and Gibbs free energy ∆Go = - 3.878, - 4.138, - 4.268 at 298, 318, 3280K respectively. Regeneration studies showed that the present resin is effectively applied for sorption of Gd(III) upto 5 cycles

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History

  • Receive Date: 14 November 2022
  • Revise Date: 06 December 2022
  • Accept Date: 14 December 2022

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