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Purification of Alkaline Waste Solutions from Np and Pu

Published online by Cambridge University Press:  10 February 2011

A. V. Guelis ,
V. P. Shilov  and
N. N. Krot
A. V. Guelis
Affiliation:
Institute of Physical Chemistry, Russian Academy of Sciences, Moscow, art.gelis@ipc.rssi.ru
V. P. Shilov
Affiliation:
Institute of Physical Chemistry, Russian Academy of Sciences, Moscow, art.gelis@ipc.rssi.ru
N. N. Krot
Affiliation:
Institute of Physical Chemistry, Russian Academy of Sciences, Moscow, art.gelis@ipc.rssi.ru
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Abstract

Coprecipitation of Np and Pu with Co(OH)3 and Fe(OH)3, obtained by the Method of Appearing Reagents from Co(NH3)6 Cl3, K2FeO4, and Na2[Fe(CN)5NO]2H2O from alkaline solutions and from simulants of Hanford Site tank wastes has been studied. Removal of Np and Pu from pH 10.5 to 0.4 M NaOH is semiquantitative with decontamination factors of 80 to 400. The presence of EDTA and HEDTA interferes with the precipitation of Co(OH)3 and Fe(OH)3. The deleterious effect of EDTA was eliminated by Ca2 addition at a 1:1 molar ratio of Ca2:EDTA. The deleterious effect of HEDTA was eliminated by the addition of 0.11 M excess precursor Co(NH3)6Cl3 to increase the content of carrier Co(OH)3.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 556: Symposium QQ – Scientific Basis for Nuclear Waste Management XXII , 1999 , 1299
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1. Krot, N.N., Shilov, V.P., Bessonov, A.A., Budantseva, N.A., Charushnikova, I.A., Perminov, V.P., and Astafurova, L.N., Investigation on the Coprecipitation of Transuranium Elements from Alkaline Solutions by the Method of Appearing Reagents, WHC-EP-0898, Westinghouse Hanford Company, Richland, Washington (1996).Google Scholar
2. Krot, N.N. and Charushnikova, I.A., “Removal of Dissolved Actinides from Alkaline Solutions by the Method of Appearing Reagents,” U.S. Patent 5,640,668 (1997).Google Scholar
3. Bessonov, A.A., Budantseva, N.A., Gelis, A.V., Nikonov, M.V., and Shilov, V.P., Investigation on the Coprecipitation of Tranuranium Elements from Alkaline Solutions by the Method of Appearing Reagents. Study of the Effects of Waste Components on Decontamination from Np(IV) and Pu(IV), PNNL-11625, Pacific Northwest National Lab., Richland, WA (1997).Google Scholar
4. Shilov, V.P., Bessonov, A.A., Garnov, A.Yu., Gogolev, A.V., Gelis, A.V., Krot, N.N., Perminov, V.P., and Astafurova, L.N., Investigations on Application of Homogeneous ant Heterogeneous Catalysis for Alkaline Waste Treatment, PNNL- 11623, Pacific Northwest National Laboratory, Richland, Washington(1997)Google Scholar
5. Peretrukhin, V.F., Krutchkov, S.V., Silin, V.I., Tananaev, I.G., Determination ofthe Solubiltry of Np(IIV)-(VI), Pu(III)-(VI), Am(II)-(VI) and Tc(IV),(V) Hydroxo Compounds in 0.5–14 1 NaOH Solutions, WHC-EP-0987, Westinghouse Hanford Company, Richland, Washington (1996).Google Scholar
6. Delegard, C.H., Radiochimica Acta 41, p. 11–21 (1987).Google Scholar
7. Peretrukhin, V.F., Silin, V.I., Kareta, A.V., Gelis, A.V., Shilov, V.P., German, K.E., Firsova, E.V., Maslennikov, A.G., and Trushina, V.E., Purification of Alkaline Solutions and Wastes from Actinides and Technetium by Coprecipitation with Some Carriers Using the Method of Appearing Reagents: Final Report, PNNL-1 1988, Pacific Northwest National Laboratory, Richland, Washington (1998).Google Scholar
8. Shilov, V.P., Radiochemistry 39, p. 328–331 (1997).Google Scholar
9. Sillen, L.O., Martell, A.E., and Bjerrum, J.. Stability Constants of Metal-Ion Complexes. Special publication number 17, Royal Society of Chemistry, London (1964).Google Scholar
10. Markov, V.K., Vinogradov, A.V., Elinson, S.V., Klygin, A.E., and Moiseev, I.V., Uranium: Methods and Determination, p. 263. Atomizdat, Moscow (in Russian) (1960).Google Scholar