Analytic studies of colloid transport in fractured porous media
We analyze the interactive migration of radioactive colloids and solute in fractured rock. Two possible interactions between radionuclides as colloids and as solute are considered: solute sorption on nonradioactive colloids to form pseudocolloids, and dissolution of radioactive colloids. Previous studies have discussed the formation and transport of colloids in porous media, including removal of colloids by filtration and sedimentation. Colloids can migrate faster than solute because of weaker sorption on stationary solids and because of hydrochromatography of colloid particles in flow channels. However, the migration of colloids and pseudocolloids can be retarded by the interaction of colloids with solute, and the migration of solute in local equilibrium with colloids can be more rapid than if colloids were not present. Here we present a new quantative analysis to predict the interactive migration of colloids and solute in porous and fractured media. 4 figs.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5715074
- Report Number(s):
- LBL-27200; CONF-901105--118; ON: DE91011891
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540230* -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- (1990-)
COLLOIDS
DISPERSIONS
ENVIRONMENTAL TRANSPORT
FRACTURED RESERVOIRS
MANAGEMENT
MASS TRANSFER
MATERIALS
POROUS MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIONUCLIDE MIGRATION
TRANSPORT THEORY
WASTE DISPOSAL
WASTE MANAGEMENT