COMPOSITE ABSORBERS CONSISTING OF INORGANIC ION-EXCHANGERS AND POLYACRYLONITRILE BINDING MATRIX - LEACHING OF CS-137 FROM CEMENTED NIFC-PANABSORBER

Authors
JOHN J SEBESTA F MOTL A
Citation
J. John et al., COMPOSITE ABSORBERS CONSISTING OF INORGANIC ION-EXCHANGERS AND POLYACRYLONITRILE BINDING MATRIX - LEACHING OF CS-137 FROM CEMENTED NIFC-PANABSORBER, Radiochimica Acta, 78, 1997, pp. 131-135
Citations number
15
Journal title
Radiochimica Acta → ACNP
ISSN journal
00338230
Volume
78
Year of publication
1997
Pages
131 - 135
Database
ISI
SICI code
0033-8230(1997)78:<131:CACOII>2.0.ZU;2-9
Abstract
Results of dynamic leaching tests of Cs-137 from caesium loaded cement ed NiFC-PAN composite absorber (nickel hexacyanoferrate active compone nt in a binding matrix of modified polyacrylonitrile) have shown that cumulative fractions leached were similar to 100 times lower when comp ared to cemented Cs-137 solution. Diffusion coefficients as low as 1.1 0(-16) m(2) . s(-1) were found for the best samples (1% of clinoptilol ite). The activation energy of the leaching process was found to be as high as 130 kJ . mole(-1).