Interaction of radionuclides with argillite from the Eleana Formation on the Nevada Test Site
Distribution coefficients have been determined for {sup 137}Cs, {sup 85}Sr, {sup 144}Ce, {sup 99}Tc, {sup 152}Eu, {sup 238}Pu, {sup 244}Cm, and {sup 243}Am between argillite from the Eleana Formation on the Nevada Test Site (NTS) and several aqueous phases. Radionuclide concentrations in the range of 1 to 0.001 {mu}Ci/ml were used with contact times of 14, 28, and 56 days. Reaction mechanism, concentration effects, exchange capacity, equilibration times, and particle size effects were addressed in a more comprehensive study of the interaction of argillite with Cs in deionized water. The experimental parameters used in the distribution coefficient measurements were based in part on this work. The aqueous phases included a simulated groundwater with composition based on the analysis of a NTS groundwater, the same simulant and deionized water which were pre-equilibrated with powdered argillite, and a groundwater simulant with approximately the same qualitative composition of the NTS simulant, but with a higher ionic strength. A system to provide continuous pH control by CO{sub 2} addition during equilibration of the argillite-solution mixtures was designed and assembled. Initial experiments were done with Cs and Eu and the effects of pH on their distribution coefficients are discussed.
- Research Organization:
- Sandia Labs., Albuquerque, NM (United States)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 59393
- Report Number(s):
- SAND-78-0893; TRN: 79:014362
- Resource Relation:
- Other Information: PBD: Feb 1979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Interaction of radionuclides with geomedia associated with the Waste Isolation Pilot Plant (WIPP) site in New Mexico
Sorption--desorption studies on argillite. I. Initial studies of strontium, technetium, cesium, barium, cerium, and europium
Related Subjects
54 ENVIRONMENTAL SCIENCES
ARGILLITE
SORPTIVE PROPERTIES
CESIUM 137
ADSORPTION
STRONTIUM 85
CERIUM 144
TECHNETIUM 99
EUROPIUM 152
PLUTONIUM 238
CURIUM 244
AMERICIUM 243
NEVADA TEST SITE
ROCKS
AQUEOUS SOLUTIONS
GROUND WATER
SIMULATION
PH VALUE
EXPERIMENTAL DATA
TABLES
Yucca Mountain Project