A new granular composite with high selectivity for cesium ion prepared from phosphomolybdic acid hydrate and inorganic porous material

Yoshio Onodera, Hitoshi Mimura, Takashi Iwasaki, Hiromichi Hayashi, Takeo Ebina, Maya Chatterjee

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Ammonium molybdophosphate (AMP) was incorporated in the porous alumina matrix (JA) by successive impregnation with H3Mo12O40P and NH4NO3. The loading percentage of AMP crystals on JA increased with the repetition times of impregnation. The distribution coefficients of Cs+ on AMP-loaded granular composite (JAAMP) was above 104 cm3/g in the presence of 1 mol/dm3 H+, while those of other nuclides were less than 10, indicating high selectivity of JAAMP to Cs+. The separation factor of 137Cs to other nuclides (85Sr, 60C0, 152Eu, 241Am, 22Na) (α(Cs/Sr;Co;Eu;Am;Na) = K(d,Cs)/K(d,Sr;Co;Eu;Am;Na) was estimated to be above 103. The breakthrough curve for Cs+ through the column packed with JAAMP exhibited a symmetrical S-shaped profile, and this exchanger proved to be effective for the selective isolation of radiocesium from a simulated high-level liquid waste.

Original languageEnglish
Pages (from-to)2347-2354
Number of pages8
JournalSeparation Science and Technology
Volume34
Issue number12
DOIs
Publication statusPublished - 1999

Keywords

  • Ammonium molybdophosphate
  • Cesium separating agent
  • Impregnation
  • Inorganic porous material
  • Loading
  • Radioactive waste solutions
  • Steric effect

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Process Chemistry and Technology
  • Filtration and Separation

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