Volatilization from borosilicate glass melts of simulated Savannah River Plant waste
Conference
·
OSTI ID:6227876
Laboratory scale studies determined the rates at which the semivolatile components sodium, boron, lithium, cesium, and ruthenium volatilized from borosilicate glass melts that contained simulated Savannah River Plant waste sludge. Sodium and boric oxides volatilize as the thermally stable compound sodium metaborate, and accounted for approx. 90% of the semivolatiles that evolved. The amounts of semivolatiles that evolved increased linearly with the logarithm of the sodium content of the glass-forming mixture. Cesium volatility was slightly suppressed when titanium dioxide was added to the melt, but was unaffected when cesium was added to the melt as a cesium-loaded zeolite rather than as a cesium carbonate solution. Volatility of ruthenium was not suppressed when the glass melt was blanketed with a nonoxidizing atmosphere. Trace quantities of mercury were removed from vapor streams by adsorption onto a silver-exchanged zeolite. A bed containing silver in the ionic state removed more than 99.9% of the mercury and had a high chemisorption capacity. Beds of lead-, copper-, and copper sulfide-exchanged zeolite-X and also an unexchanged zeolite-X were tested. None of these latter beds had high removal efficiency and high chemisorption capacity.
- Research Organization:
- Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
- DOE Contract Number:
- EY-76-C-09-0001
- OSTI ID:
- 6227876
- Report Number(s):
- DP-MS-78-13; CONF-780819-26
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
052001* -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALKALI METALS
BORON
CESIUM
ELEMENTS
GLASS
LITHIUM
MANAGEMENT
METALS
NATIONAL ORGANIZATIONS
PHASE TRANSFORMATIONS
PLATINUM METALS
PROCESSING
RADIOACTIVE WASTE PROCESSING
REFRACTORY METALS
RUTHENIUM
SAVANNAH RIVER PLANT
SEMIMETALS
SIMULATION
SODIUM
SOLIDIFICATION
TRANSITION ELEMENTS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
VITRIFICATION
VOLATILITY
WASTE MANAGEMENT
WASTE PROCESSING
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALKALI METALS
BORON
CESIUM
ELEMENTS
GLASS
LITHIUM
MANAGEMENT
METALS
NATIONAL ORGANIZATIONS
PHASE TRANSFORMATIONS
PLATINUM METALS
PROCESSING
RADIOACTIVE WASTE PROCESSING
REFRACTORY METALS
RUTHENIUM
SAVANNAH RIVER PLANT
SEMIMETALS
SIMULATION
SODIUM
SOLIDIFICATION
TRANSITION ELEMENTS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
VITRIFICATION
VOLATILITY
WASTE MANAGEMENT
WASTE PROCESSING