Adsorption behavior of cesium and strontium on synthetic zeolite P

Hitoshi Mimura, Kenichi Akiba

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Adsorption behavior of Cs and Sr on a synthetic zeolite Ρ has been studied. Natural zeolites, clinoptilolite and mordenite, were converted into the zeolite Ρ having a high crystallinity through hydrothermal treatment with NaOH solutions. The distribution coefficient (Kd) for Cs+ and Sr2+ depended on pH in acidic region, while attained nearly constant values around 103 cm3/g in neutral and alkaline regions. This value is almost the same as that for Cs+ and about ten times that for Sr2+ on the original clinoptilolite. The adsorption obeys Langmuir-type isotherms, and the saturated amounts of Cs and Sr were respectively estimated to be 1.76 and 1.84 mmol/g. The zeolite Ρ containing these cations was readily converted into a stable solid form consisting of pollucite and Sr-feldspar by calcination above 1, 000°C.

Original languageEnglish
Pages (from-to)436-443
Number of pages8
Journaljournal of nuclear science and technology
Volume30
Issue number5
DOIs
Publication statusPublished - 1993 May

Keywords

  • Adsorption
  • Calcination
  • Cesium
  • Cesium ions
  • Clinoptilolite
  • Distribution coefficient
  • Feldspar
  • Hydrothermal treatment
  • Langmuir-type isotherm
  • Mordenite
  • Pollucite
  • PΗ value
  • Solid
  • Strontium
  • Strontium ions
  • Zeolite P

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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