Autoradiographic study of actinide sorption on climax stock granite
An autoradiographic technique that employed an arrangement for placing in firm contact Polaroid sheet film, a scintillator screen, and the radioactive face of a specimen was applied to a study of the sorption of americium, neptunium, plutonium, and uranium on Climax Stock granite under varying conditions of pH and Eh. Qualitative agreement was found between the sorption of americium on crushed, pure minerals and on the minerals comprising the specimen of Climax Stock granite. The observations also supported a mechanism for reduction of Np(V) to Np(IV) and Pu(VI) to Pu(IV) by Fe(II)-containing minerals. There was no evidence for reduction of U(VI) by the Fe(II)-containing minerals, although the uranium, assumed to be present as UO/sub 2//sup 2 +/, appeared to be the only actinide species to exhibit sorption by a simple, cation-exchange mechanism at particular mineral sites. Some implications of these results for nuclear waste isolation are discussed briefly.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5289169
- Report Number(s):
- ORNL-5617; TRN: 80-012173
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
AMERICIUM
AUTORADIOGRAPHY
SORPTION
GRANITES
SORPTIVE PROPERTIES
MINERALS
NEPTUNIUM
PLUTONIUM
URANIUM
DIAGRAMS
IMAGES
PHOTOGRAPHIC FILMS
RADIOACTIVE WASTE DISPOSAL
RADIONUCLIDE MIGRATION
REDUCTION
SCINTILLATION COUNTERS
UNDERGROUND DISPOSAL
URANIUM OXIDES
VALENCE
ACTINIDE COMPOUNDS
ACTINIDES
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
ENVIRONMENTAL TRANSPORT
IGNEOUS ROCKS
MANAGEMENT
MASS TRANSFER
MEASURING INSTRUMENTS
METALS
OXIDES
OXYGEN COMPOUNDS
PLUTONIC ROCKS
RADIATION DETECTORS
ROCKS
SURFACE PROPERTIES
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
URANIUM COMPOUNDS
WASTE DISPOSAL
WASTE MANAGEMENT
052002* - Nuclear Fuels- Waste Disposal & Storage
510500 - Environment
Terrestrial- Site Resource & Use Studies- (-1989)
580300 - Mineralogy
Petrology
& Rock Mechanics- (-1989)