Colloid facilitated transport in fractured rocks: parameter estimation and comparison with experimental data
Colloid-facilitated migration of plutonium in fractured rock has been implicated in both field and laboratory studies. Other reactive radionuclides may also experience enhanced mobility due to groundwater colloids. Model prediction of this process is necessary for assessment of contaminant boundaries in systems for which radionuclides are already in the groundwater and for performance assessment of potential repositories for radioactive waste. Therefore, a reactive transport model is developed and parameterized using results from controlled laboratory fracture column experiments. Silica, montmorillonite and clinoptilolite colloids are used in the experiments along with plutonium and Tritium. The goal of the numerical model is to identify and parameterize the physical and chemical processes that affect the colloid-facilitated transport of plutonium in the fractures. The parameters used in this model are similar in form to those that might be used in a field-scale transport model.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science. Office of Basic Energy Sciences. Chemical Sciences, Geosciences, and Biosciences Division (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 810871
- Report Number(s):
- LBNL-52268; R&D Project: 81BC7D; TRN: US0302827
- Resource Relation:
- Conference: 2003 International High-Level Radioactive Waste Management Meeting, Las Vegas, NV (US), 03/30/2003--04/02/2003; Other Information: PBD: 10 Jan 2003
- Country of Publication:
- United States
- Language:
- English
Similar Records
Colloid and Colloid-Facilitated Contaminant Transport Experiments and Models to Support Assessments of Radionuclide Migration at Yucca Mountain and the Nevada Test Site
Colloid-Facilitated Transport of Low-Solubility Radionuclides: A Field, Experimental, and Modeling Investigation