Mass transfer in a geologic environment

Conference · Thu Nov 01 00:00:00 EST 1984

OSTI ID:5989622

Zavoshy, S J; Chambre, P L; Pigford, T H

A new analytical solution is presented that predicts the rate of dissolution of species from a waste package surrounded by a wet porous medium. By equating the rate of diffusive mass transfer into the porous rock to the rate of liquid-surface chemical reaction, an analytical solution for the time-dependent dissolution rate and the time-dependent concentration of dissolved species at the waste surface is obtained. From these results it is shown that for most of the important species in a package of radioactive waste the surface liquid quickly reaches near-saturation concentrations and the dissolution rate can be predicted by the simpler theory that assumes saturation concentrations in the surface liquid. 26 refs., 3 figs., 1 tab.

• Research Organization: Lawrence Berkeley Lab., CA (USA); California Univ., Berkeley (USA). Dept. of Nuclear Engineering
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5989622
• Report Number(s): LBL-18553; CONF-841157-104; ON: DE86009364
• Resource Relation: Conference: Materials Research Society annual meeting, Boston, MA, USA, 26 Nov 1984; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
AMERICIUM
DISSOLUTION
BOROSILICATE GLASS
LEACHING
CESIUM
CURIUM
MATHEMATICAL MODELS
NEPTUNIUM
PLUTONIUM
SILICA
TECHNETIUM
URANIUM
GROUND WATER
POROUS MATERIALS
RADIONUCLIDE MIGRATION
TIME DEPENDENCE
ACTINIDES
ALKALI METALS
CHALCOGENIDES
ELEMENTS
ENVIRONMENTAL TRANSPORT
GLASS
HYDROGEN COMPOUNDS
MASS TRANSFER
MATERIALS
METALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SILICON COMPOUNDS
SILICON OXIDES
TRANSITION ELEMENTS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
WATER
053000* - Nuclear Fuels- Environmental Aspects
520301 - Environment
Aquatic- Radioactive Materials Monitoring & Transport- Water- (1987)
052002 - Nuclear Fuels- Waste Disposal & Storage