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- Title
Behavior of Microamounts of <sup>22</sup>Na, <sup>85</sup>Sr, <sup>137</sup>Cs, and <sup>152</sup>Eu in Sorption and Coprecipitation on Mixed Potassium Neodymium Ferrocyanide from Solutions.
- Authors
Kulyukhin, S. A.; Krasavina, E. P.; Mizina, L. V.; Rumer, I. A.; Tanashchuk, N. V.; Konovalova, N. A.; Murachev, A. S.; Sergeev, V. V.
- Abstract
Sorption of 85Sr, 137Cs, 22Na, and 152Eu on solid mixed potassium neodymium ferrocyanide KNd[Fe(CN)6]·4H2O from neutral, acidic, and alkaline media and also coprecipitation of these radionuclides with KNd[Fe(CN)6]·4H2O in its formation from a homogeneous solution were studied. It was found that 85Sr and 22Na do not noticeably coprecipitate with solid KNd[Fe(CN)6]·4H2O and are not sorbed by this substance. In aqueous medium, depending on the cesium concentration in solution, from 80 to 98% of 137Cs coprecipitates with solid KNd[Fe(CN)6]·4H2O. In this case, the distribution coefficient K d depends on both the cesium concentration in solution and solution pH. Within 30 min of contact of the solid and liquid phases, the degree of recovery of 137Cs from aqueous solution with KNd[Fe(CN)6]·4H2O is approximately 95.0% of the initial amount. 152Eu coprecipitates with solid KNd[Fe(CN)6]·4H2O during its formation from a homogeneous solution to 98–99.9%. The degree of recovery of 152Eu from aqueous solution with KNd[Fe(CN)6]·4H2O precipitate within 60 min of contact of the solid and liquid phases is 70.3% of the initial amount.
- Subjects
ABSORPTION; POTASSIUM; FERROCYANIDES; SOLUTION (Chemistry); PARTITION coefficient (Chemistry); HYDROGEN-ion concentration
- Publication
Radiochemistry, 2005, Vol 47, Issue 6, p575
- ISSN
1066-3622
- Publication type
Article
- DOI
10.1007/s11137-006-0011-7