Published 1991
| Version v1
Journal article
Transport of actinides and Tc through a bentonite backfill containing small quantities of iron or copper
- 1. Chalmers Univ. of Technology, Goeteborg (Sweden). Dept. of Nuclear Chemistry
Description
In the Swedish concept for final disposal of high-level radioactive waste, compacted bentonite has been proposed as a suitable backfill. The apparent diffusivity (Da) of the actinides U, Pu, Np and the fission product Tc in compacted bentonite mixed with 1% Fe(0), Fe(II), Cu(0) or Cu(II) has been measured in an inert nitrogen atmosphere. The results indicate, especially in the case of Fe(0) or Fe(II), reduction from the higher oxidation state Np(V), U(VI) and Tc(VII) probably to Np(IV), U(IV) and Tc(IV). (orig.)
Additional details
Publishing Information
- Journal Title
- Radiochimica Acta
- Journal Volume
- 52/53
- Journal Issue
- pt.1
- Series
- Radiochim. Acta.
- Journal Page Range
- 283-286
- ISSN
- 0033-8230
- CODEN
- RAACA
Conference
- Title
- 2. international conference on chemistry and migration behavior of actinides and fission products in the geosphere (Migration '89).
- Dates
- 6-10 Nov 1989.
- Place
- Monterey, CA (USA).
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 22054925
- Subject category
- S54: ENVIRONMENTAL SCIENCES; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BACKFILLING; BENTONITE; CONTAINERS; COPPER COMPOUNDS; CORROSION; DIFFUSION; IRON COMPOUNDS; NEPTUNIUM 237; PLUTONIUM 239; RADIOACTIVE WASTE DISPOSAL; RADIONUCLIDE MIGRATION; REDUCTION; TECHNETIUM 99; URANIUM 233
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL REACTIONS; CLAYS; ENVIRONMENTAL TRANSPORT; EVEN-ODD NUCLEI; HEAVY ION DECAY RADIOISOTOPES; HEAVY NUCLEI; HOURS LIVING RADIOISOTOPES; INORGANIC ION EXCHANGERS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ION EXCHANGE MATERIALS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MANAGEMENT; MASS TRANSFER; MATERIALS; MINERALS; NANOSEC LIVING RADIOISOTOPES; NEON 24 DECAY RADIOISOTOPES; NEPTUNIUM ISOTOPES; NUCLEI; ODD-EVEN NUCLEI; PLUTONIUM ISOTOPES; RADIOISOTOPES; SILICATE MINERALS; SPONTANEOUS FISSION RADIOISOTO; TECHNETIUM ISOTOPES; TRANSITION ELEMENT COMPOUNDS; URANIUM ISOTOPES; WASTE DISPOSAL; WASTE MANAGEMENT; YEARS LIVING RADIOISOTOPES