Summary
Actinide partitioning from high level liquid waste has been subject to experimental investigations at the JRC-Ispra and CEA-Fontenay-aux-Roses. In this context, two main flow-sheets based on solvent extraction were drawn up which both involved a denitration step by means of formic acid. In the first process named HDEHPl, denitration was intended to lower the HLLW acidity down to pH 2 while keeping actinides and mainly plutonium in a soluble and extractible form which was proved to be quite effective through secondary reactions between noble metals and formic acid. As for the second process -the TBP2 process — denitration was performed during and after the concentration of high level waste in order to reach a final acidity of about 1 M HNO3. On the whole, the results of denitration experiments carried out on real waste at the technical scale agreed quite well with those previously achieved on simulates in demonstrating that plutonium can be quantitatively removed from denitration precipitate under certain operating conditions.
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References
P. BARBERO, L. CECILLE, F. MANNONE, G. TANET, S. VALKIERS and H. WILLERS. “Schémas de séparation des effluents nucléaires de haute activité (HAW) faisant appel à l’extraction par solvant. Procédés HDEHP et TBP”. Proceedings 2nd Technical meeting on the nuclear transmutation of actinides. Ispra, Italy, April 21–24, 1980.EUR 6929 EN/FR. Session 2.2, p. 211–224
L. CECILLE, H. DWORSCHAK, B. HUNT, F. MANNONE, F. MOUSTY. “Separation of actinides from Purex type HAW raffinates: Development of experimental studies at JRC-Ispra establishment”, paper presented at the Actinide Separation Symposium. Honolulu, Hawai, May 1–6, 1979.
L. CECILLE, F. MANNONE and F. MOUSTY. “The partitioning of high-activity waste (HAW) raffinates”. Experimental studies on the chemical feasibility of some partitioning processes”. Proceedings of IAEA/CEC symposium on the management of alpha-contaminated wastes. Vienna, 2–6 June 1980. IAEA-SM-246/22 — p. 573–585.
L. CECILLE’S Contribution for the final report on the chemical separation of actinides from high activity liquid wastes. Chapter 3. JRC-Ispra report n° SA/1.07.03.84.02. Edited by F. Mannone and H. Dworschak (1984).
S. Drobnik KFK reports nr. 1830 (1973), 1949 (1974) and 2000 (1974).
L. CECILLE’S Contribution for the final report on the chemical separation of actinides from high activity liquid wastes. Chapter 5. JRC-Ispra report n° SA/1.07.03.84.02. Edited by F. Mannone and H. Dworschak (1984).
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© 1986 ECSC, EEC, EAEC, Brussels and Luxembourg
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Cecille, L., Lecomte, M. (1986). Denitration of HLLW for Actinide Partitioning. In: Cecille, L., Halaszovich, S. (eds) Denitration of Radioactive Liquid Waste. Radioactive Waste Management Series. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-9757-1_10
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DOI: https://doi.org/10.1007/978-94-011-9757-1_10
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