TY - JOUR
T1 - A new granular composite with high selectivity for cesium ion prepared from phosphomolybdic acid hydrate and inorganic porous material
AU - Onodera, Yoshio
AU - Mimura, Hitoshi
AU - Iwasaki, Takashi
AU - Hayashi, Hiromichi
AU - Ebina, Takeo
AU - Chatterjee, Maya
N1 - Copyright:
Copyright 2005 Elsevier B.V., All rights reserved.
PY - 1999
Y1 - 1999
N2 - 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.
AB - 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.
KW - Ammonium molybdophosphate
KW - Cesium separating agent
KW - Impregnation
KW - Inorganic porous material
KW - Loading
KW - Radioactive waste solutions
KW - Steric effect
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U2 - 10.1081/SS-100100776
DO - 10.1081/SS-100100776
M3 - Article
AN - SCOPUS:0033505893
SN - 0149-6395
VL - 34
SP - 2347
EP - 2354
JO - Separation Science and Technology (Philadelphia)
JF - Separation Science and Technology (Philadelphia)
IS - 12
ER -