Chemical Forms and Distribution of Platinum Group Metals and Technetium During Spent Fuel Reprocessing

Conference · Sun Jul 01 04:00:00 EDT 2007

OSTI ID:21290818

Pokhitonov, Y ^[1]

---

1. V.G. Khlopin Radium Institute, St. Petersburg (Russian Federation)

Amongst the fission products present in spent nuclear fuel of Nuclear Power Plants there are considerable quantities of platinum group metals (PGMs): ruthenium, rhodium and palladium. At the same time there are considerable amounts of technetium in the spent fuel, the problem of its removal at radiochemical plants being in operation encountering serious difficulties. Increased interest in this radionuclides is due not only to its rather large yield, but to higher mobility in the environment as well. However, the peculiarities of technetium chemistry in nitric acid solutions create certain problems when trying to separate it as a single product in the course of NPP's spent fuel reprocessing. The object of this work was to conduct a comprehensive analysis of platinum group metals and technetium behavior at various stages of spent fuel reprocessing and to seek the decisions which could make it possible to separate its as a single product. The paper will report data on platinum metals (PGM) and technetium distribution in spent fuel reprocessing products. The description of various techniques for palladium recovery from differing in composition radioactive solutions arising from reprocessing is given. (authors)

• Research Organization: WM Symposia, 1628 E. Southern Avenue, Suite 9 - 332, Tempe, AZ 85282 (United States)
• OSTI ID: 21290818
• Report Number(s): INIS-US--09-WM-07209
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
FISSION PRODUCTS
FUEL REPROCESSING PLANTS
MATERIALS RECOVERY
PALLADIUM
RADIOCHEMISTRY
REPROCESSING
RHODIUM
RUTHENIUM
SPENT FUELS
TECHNETIUM