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Leaching behavior of 60Co and 173Cs from spent ion exchange resins in cement matrix

✍ Scribed by I. Plecas; A. Peric; A. Kostadinovic; J. Drljaca; S. Glodic

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 158 KB
Volume: 22
Category: Article
ISSN: 0008-8846
DOI: 10.1016/0008-8846(92)90117-e

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✦ Synopsis

The leaching rate of cobalt-60 and cesium-137 in cement has been studied. The solidification matrix was a standard Portland cement mixed with 300-360 (kg/m 3) spent ion exchange resins, with or without 2-5% of bentonite clay. The leaching rates from the cement marix were measured as Co-60: (4, 2-6, 9) x 10 -5 (cm/d), and for Cs-137: (3, 2-6, 6) x 10 -4 (crn/d), after 720 days. From the leaching data the apparent diffusivity of cobalt and cesium in cement matrix with a waste load of 300-360 kg/m~ spent ion exchange resins, was measured as Co-60: (1, 0-4, 0) x 10 -6 (cm2/d) and for Cs-137: (0, 5-2, 6) x 10-4-(cm2/d), after 750 days.

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