Adsorption properties of europium on granulated α-zirconium phosphate

Hitoshi Mimura, Kenichi Akiba, Noriyuki Yamamoto

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Adsorption behavior of Eu3+ on granulated α-zirconium phosphate (α-ZrP) has been studied by batch and column methods. The distribution coefficients (Kd) of Eu3+ into α-ZrP increased with equilibrium pH, suggesting ion-exchange adsorption. The Kd values were in the order of Eu3+>Cs+>Sr2+>Co 2+>Na+. An expansion of interlayer distance of α-ZrP in the presence of Na+ enables the large hydrated Eu3+ ions to be adsorbed on this exchanger, and the adsorption isotherm of Eu3+ ions followed Freundlich's adsorption formula. The granulated α-ZrP has high thermal stability and acid resistance. The breakthrough capacity for Eu3+ linearly increased with pH of the effluent.

Original languageEnglish
Pages (from-to)592-596
Number of pages5
JournalJournal of Nuclear Science and Technology
Issue number7
Publication statusPublished - 1996 Jul


  • α-Zirconium phosphate
  • Acid resistance
  • Adsorption
  • Breakthrough capacity
  • Breakthrough curve
  • Chemical effluents
  • Desorption
  • Distribution coefficient
  • Europium
  • Inorganic ion exchanger
  • Ion exchange reaction
  • Layered structure
  • pH value
  • Thermal stability

ASJC Scopus subject areas

  • Nuclear Energy and Engineering


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