Progress in evaluation of radionuclide geochemical information developed by DOE high-level nuclear waste repository site projects: Report for April 1986--September 1987
During this report period, all experiments were conducted with tuff from the proposed high-level nuclear waste site at Yucca Mountain, Nevada. Batch sorption ratio determinations were conducted for strontium, cesium, uranium, and technetium onto samples of tuff using real and synthetic groundwater J-13. There were no significant differences in sorption ratios in experiments with real and synthetic groundwater. Columns were tested by determination of elution curves in J-13 containing tritium and technetium as the TcO{sub 4}/sup {minus}/ ion. For strontium and cesium, fairly good correlation between values of the sorption ratio obtained by the two methods was observed. Little technetium sorption was observed with either method. The elution peaks obtained with neptunium and uranium were asymmetrical and the shapes were often complex, observations which suggest irreversibilities in the sorption reaction. Synthetic groundwater J-13 was slowly dripped onto a slab of tuff maintained at 95--100{degree}C, and the result was a thin encrustation of solids on the slab as the water evaporated. Fresh J-13 groundwater was then allowed to contact the encrustation in a vessel maintained at 90{degree}C. The principal result of the experiment was a significant loss of calcium and magnesium from the fresh J-13 groundwater. 13 refs. 25 figs., 9 tabs.
- Research Organization:
- Nuclear Regulatory Commission, Washington, DC (United States). Div. of Waste Management; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 60473
- Report Number(s):
- NUREG/CR-4708-Vol.2; ORNL/TM-10147-Vol.2; ON: TI88015467
- Resource Relation:
- Other Information: PBD: Jul 1988
- Country of Publication:
- United States
- Language:
- English
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Progress in evaluation of radionuclide geochemical information developed by DOE high-level nuclear waste repository site projects; Report for October 1987--June 1989
Related Subjects
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
TUFF
GEOCHEMISTRY
CESIUM
GROUND WATER
NEVADA
PROGRESS REPORT
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTE MANAGEMENT
RADIONUCLIDE MIGRATION
SITE CHARACTERIZATION
SORPTIVE PROPERTIES
STRONTIUM
TECHNETIUM
TEMPERATURE DEPENDENCE
TRITIUM
URANIUM
YUCCA MOUNTAIN
Yucca Mountain Project