Journal of Radioanalytical and Nuclear Chemistry

, Volume 307, Issue 1, pp 681–689

Rhenium(VII) and technetium(VII) separation from aqueous solutions using a polyethylenimine–epichlorohydrin resin

  • S. Sarri
  • P. Misaelides
  • D. Zamboulis
  • X. Gaona
  • M. Altmaier
  • H. Geckeis
Article
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Abstract

The ReO4 and 99TcO4 removal from aqueous solutions using a polyethylenimine–epichlorohydrin resin was investigated in absence and presence of background electrolyte (0.01 and 0.50 M NaCl). Re(VII) and Tc(VII) sorption isotherms were obtained for solutions with 2.3 ≤ pH ≤ 8.9 and concentration 0.21–26.9 mmol Re/L and 5 × 10−3 – 5 × 10−2 mmol 99Tc/L. The highest uptake for both elements (Rd ≈ 104 mL/g) was observed for solutions with pH ≤ 4 and CNaCl ≤ 0.01 M, hinting towards the existence of protonated groups contributing to the sorption of anions under acidic conditions and to the competition of Cl. The sorption data were modeled using the Langmuir and Freundlich equations.

Keywords

Sorption Polyethylenimine–epichlorohydrin resin Pertechnetate anions Perrhenate anions Sorption isotherms 

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2015

Authors and Affiliations

  • S. Sarri
    • 1
  • P. Misaelides
    • 1
  • D. Zamboulis
    • 1
  • X. Gaona
    • 2
  • M. Altmaier
    • 2
  • H. Geckeis
    • 2
  1. 1.Department of ChemistryAristotle UniversityThessalonikiGreece
  2. 2.Institute for Nuclear Waste DisposalKarlsruhe Institute of TechnologyKarlsruheGermany

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