Modeling mineral dissolution and precipitation in dual-porosity systems

Conference · Tue Oct 01 04:00:00 EDT 1991

OSTI ID:10108081

Novak, C F; Gelbard, F

A dual-porosity chemical transport model is applied to saturated fractured porous media. In this model, transport through fractures is advection-dominated while transport between the matrix and the fractures is diffusion-dominated. Recent studies in the literature indicate that conservative tracers and radionuclides in these systems will be retarded by matrix diffusion in the absence of chemical reactions. This study examines systems that include chemical reactions (e.g., dissolution/precipitation and aqueous complexation) and examines changes in retardation caused by precipitation.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 10108081
• Report Number(s): SAND--91-0430; CONF-9110152--2; ON: DE92003945
• Country of Publication: United States
• Language: English

Related Subjects

053000
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
540230
58 GEOSCIENCES
580000
99 GENERAL AND MISCELLANEOUS
990200
ADVECTION
ALGORITHMS
COMPUTERIZED SIMULATION
DIFFUSION
DISSOLUTION
ENVIRONMENTAL ASPECTS
FINITE DIFFERENCE METHOD
FRACTURED RESERVOIRS
GEOSCIENCES
LEACHING
MATHEMATICS AND COMPUTERS
MINERALS
PERMEABILITY
POROSITY
PRECIPITATION
RADIOACTIVE MATERIALS MONITORING AND TRANSPORT
RADIONUCLIDE MIGRATION
ROCK-FLUID INTERACTIONS
THERMODYNAMIC ACTIVITY