Interactions and transport of plutonium-humic acid particles in groundwater environments
Creators
- 1. Commission of the European Communities, Ispra (Italy). Joint Research Centre
- 2. Dept. of Physical Chemistry and Electrochemistry, Univ. of Milano, 20133 Milano (Italy)
Description
The authors describe Pu adsorption on pure γ-alumina and heterogeneous mineral phases investigated as a function of pH and humic acid (HA) concentration. Information on surface speciation was obtained by using various actinides as valence analogues for Pu. Surface redox transformations of Pu(V) appeared to control Pu uptake onto electron exchanging minerals. A one-dimensional transport experiment of high molecular weight HA in water saturated clayey sand column was performed under reducing conditions. This showed that HA particles larger than 600 nm were retained in the column. The HA breakthrough curve was characterized by extended tailing. Physico-chemical interactions at the mineral surface and particle straining in smaller pore spaces appeared to control HA transport through the soil. The chemical association of Pu with moving HA was investigated by leaching of 238-Pu-doped borosilicate glasses. Enhancement in Pu release rate was observed in HA solutions compared with organic-free groundwater
Additional details
Publishing Information
- Publisher
- Materials Research Society.
- Imprint Place
- Pittsburgh, PA (USA)
- ISBN
- 0-931837-97-9
- Imprint Title
- Scientific basis for nuclear waste management XII
- Imprint Pagination
- 1001 p.
- Series
- Materials Research Society symposium proceedings. Volume 127.
- Journal Page Range
- p. 823-830.
Conference
- Title
- 12. international symposium on the scientific basis for nuclear waste management.
- Dates
- 10-13 Oct 1988.
- Place
- Berlin (Germany, F.R.).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21037565
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; S58: GEOSCIENCES;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ACTINIDES; ALUMINIUM OXIDES; BOROSILICATE GLASS; GROUND WATER; HIGH-LEVEL RADIOACTIVE WASTES; HUMIC ACIDS; INTERACTIONS; LEACHING; OXIDATION; PERFORMANCE; PH VALUE; PLUTONIUM 238; RADIOACTIVE WASTE DISPOSAL; RADIOACTIVE WASTE FACILITIES; RADIONUCLIDE MIGRATION; REDUCTION; SAFETY
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; DISSOLUTION; ELEMENTS; ENVIRONMENTAL TRANSPORT; EVEN-EVEN NUCLEI; GLASS; HEAVY ION DECAY RADIOISOTOPES; HEAVY NUCLEI; HYDROGEN COMPOUNDS; ISOTOPES; MANAGEMENT; MASS TRANSFER; MATERIALS; METALS; NUCLEAR FACILITIES; NUCLEI; ORGANIC ACIDS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PLUTONIUM ISOTOPES; POLAR SOLVENTS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; RADIOISOTOPES; SEPARATION PROCESSES; SILICON 32 DECAY RADIOISOTOPES; SOLVENTS; SPONTANEOUS FISSION RADIOISOTO; WASTE DISPOSAL; WASTE MANAGEMENT; WASTES; WATER; YEARS LIVING RADIOISOTOPES
Optional Information
- Secondary number(s)
- CONF-881066--.