Leaching characteristics of actinides from simulated reactor waste

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:5148877

Weed, H C; Coles, D G; Bradley, D J; Mensing, R W; Schweiger, J S; Rego, J H

Leach rates for /sup 237/Np and /sup 239/Pu are investigated with a single-pass leaching system. The factorial experimental design uses several combinations of solution composition and flow rate; and two temperatures, 25/sup 0/ and 75/sup 0/C. The 25/sup 0/C results are compared with those form a modified IAEA procedure. At 25/sup 0/C, leach rates decrease with time. Agreement between results from the single-pass and modified IAEA methods is fair with WIPP brine leachant, good with NaHCO/sub 3/, and good with distilled H/sub 2/O. Leach rates are approximately independent of flow rates at room temperature, but increase with flow rates at high temperature. Rates for /sup 237/Np increase with temperature, but those fro /sup 239/Pu either decrease or do not change with temperature.

• Research Organization: Battelle Pacific Northwest Labs., Richland, WA (USA); California Univ., Livermore (USA). Lawrence Livermore Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5148877
• Report Number(s): UCRL-81147(Pt.2)(Rev.1); CONF-791112-69(Pt.2)(Rev.1)
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
BOROSILICATE GLASS
BRINES
CARBON COMPOUNDS
CARBONATES
DISSOLUTION
ENVIRONMENTAL TRANSPORT
EVEN-ODD NUCLEI
GLASS
HEAVY NUCLEI
HYDROGEN COMPOUNDS
ISOTOPES
LEACHING
MANAGEMENT
MASS TRANSFER
NEPTUNIUM 237
NEPTUNIUM ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PLUTONIUM 239
PLUTONIUM ISOTOPES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTES
RADIOISOTOPES
RADIONUCLIDE MIGRATION
SEPARATION PROCESSES
SODIUM CARBONATES
SODIUM COMPOUNDS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER
YEARS LIVING RADIOISOTOPES