Leaching characteristics of actinides from simulated reactor waste, Part 2. [Borosilicate glass]

Conference · Fri Oct 05 04:00:00 EDT 1979

OSTI ID:5819559

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 and 75/sup 0/C. The 25/sup 0/C results are compared with those from 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 for /sup 239/Pu either decrease or do not change with temperature. 7 figures.

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5819559
• Report Number(s): UCRL-81147(Pt.2); CONF-791112-10(Pt.2)
• Country of Publication: United States
• Language: English

Related Subjects

052000 -- Nuclear Fuels-- Waste Management
053000* -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ACID CARBONATES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AQUEOUS SOLUTIONS
BORON COMPOUNDS
BOROSILICATES
BRINES
DISPERSIONS
DISSOLUTION
EVEN-ODD NUCLEI
FLOW RATE
GLASS
HEAVY NUCLEI
HYDROGEN COMPOUNDS
ISOTOPES
KINETICS
LEACHING
MIXTURES
NEPTUNIUM 237
NEPTUNIUM ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PLUTONIUM 239
PLUTONIUM ISOTOPES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOISOTOPES
SEPARATION PROCESSES
SILICON COMPOUNDS
SOLID WASTES
SOLUTIONS
TEMPERATURE DEPENDENCE
WASTES
WATER
YEARS LIVING RADIOISOTOPES