Illite in the Oklo natural fission reactors in Gabon: Considerations for Cs containment

Book · Sun Dec 31 04:00:00 EST 1995

OSTI ID:382901

Szabo, G; Guczi, J ^[1]; Nagy, B ^[2]; Janeczek, J ^[3]; Ewing, R C ^[4]

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1. Frederic Joliot-Curie National Research Inst. for Radiobiology and Radiohygiene, Budapest (Hungary)
2. Univ. of Arizona, Tucson, AZ (United States)
3. Uniwersytet Slaski, Sosnowiec (Poland)
4. Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Earth and Planetary Sciences

The {approximately} 2 Ga old Oklo, Okelobondo and Bangombe natural reactors in the Republic of Gabon contain solid graphitic bitumens and clay minerals, both of which have effected the containment, or partial containment, of {sup 235}U and several fission products. In laboratory experiments, sorption of {sup 134}Cs by illite, and illite coated with petroleum was measured in aqueous NaCl solutions to simulate subsurface (connate) waters in sedimentary rocks. Elevated temperatures and increasing salinity of the NaCl solutions facilitated the removal of sorbed cesium from illite.

• OSTI ID: 382901
• Report Number(s): CONF-941075--; ISBN 1-55899-253-7
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
54 ENVIRONMENTAL SCIENCES
BACKFILLING
CESIUM 134
CONNATE WATER
DESORPTION
EXPERIMENTAL DATA
ILLITE
MINERALOGY
OKLO PHENOMENON
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
RADIONUCLIDE MIGRATION
SALINITY
SORPTION
SORPTIVE PROPERTIES
SURFACE AREA
TEMPERATURE DEPENDENCE
UNDERGROUND DISPOSAL
URANIUM 235