Some basic difficulties in predicting sorbing tracer migration in fractured rocks from tracer experiments using non-interacting tracers

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:220987

Neretnieks, I; Moreno, L ^[1]

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1. Royal Inst. of Technology, Stockholm (Sweden). Dept. of Chemical Engineering and Technology

It is shown that the residence time of sorbing tracers depends on the flowrate of water and the fracture surface onto which the tracers sorb. This also applies to tracers that diffuse into the rock matrix. The residence time of the sorbing tracers, for all practical purposes, is not influenced by the residence time of the water. The consequences are that it is not possible to infer the residence time of the sorbing tracers from information on non-interacting tracers because these are not influenced by the surface. The surface area of the fractured rock where the mobile water contacts the rock, the so-called flow wetted surface, must be known to assess the residence time of the sorbing tracers.

• OSTI ID: 220987
• Report Number(s): CONF-950917--; ISBN 0-7918-1219-7
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
ADSORPTION
ERRORS
FLOW RATE
FRACTURED RESERVOIRS
GROUND WATER
HYDRAULIC CONDUCTIVITY
MEASURING METHODS
PERFORMANCE
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
RADIOISOTOPES
RADIONUCLIDE MIGRATION
TIME DEPENDENCE
TRACER TECHNIQUES
UNDERGROUND DISPOSAL
WASTE-ROCK INTERACTIONS