A new granular composite with high selectivity for cesium ion prepared from phosphomolybdic acid hydrate and inorganic porous material
- Tohoku National Industrial Research Inst., Sendai (Japan)
- Tohoku Univ., Sendai (Japan). Inst. for Advanced Materials Processing
Ammonium molybdophosphate (AMP) was incorporated in the porous alumina matrix (JA) by successive impregnation with H{sub 3}Mo{sub 12}O{sub 40}P and NH{sub 4}NO{sub 3}. The loading percentage of AMP crystals on JA increased with the repetition times of impregnation. The distribution coefficients of Cs{sup +} on AMP-loaded granular composite (JAAMP) was above 10{sup 4} cm{sup 3}/g in the presence of 1 mol/dm{sup 3}H{sup +}, while those of other nuclides were less than 10, indicating high selectivity of JAAMP to Cs{sup +}. The separation factor of {sup 137}Cs to other nuclides ({sup 85}Sr, {sup 60}Co, {sup 152}Eu, {sup 241}Am, {sup 22}Na) ({alpha}{sub Cs/Sr;Co;Eu;Am;Na} = KJ{sub d,Cs}/K{sub d,Sr;Co;Eu;Am;Na}) was estimated to be above 10{sup 3}. The breakthrough curve for Cs{sup +} 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.
- OSTI ID:
- 691484
- Journal Information:
- Separation Science and Technology, Vol. 34, Issue 12; Other Information: PBD: Sep 1999
- Country of Publication:
- United States
- Language:
- English
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