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Title: Colloid facilitated transport in fractured rocks: parameter estimation and comparison with experimental data

Abstract

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.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science. Office of Basic Energy Sciences. Chemical Sciences, Geosciences, and Biosciences Division (US)
OSTI Identifier:
810871
Report Number(s):
LBNL-52268
R&D Project: 81BC7D; TRN: US0302827
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Conference
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
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 58 GEOSCIENCES; CLINOPTILOLITE; COLLOIDS; FORECASTING; FRACTURES; HIGH-LEVEL RADIOACTIVE WASTES; MANAGEMENT; MONTMORILLONITE; PERFORMANCE; PLUTONIUM; RADIOACTIVE WASTES; RADIOISOTOPES; SILICA; TRANSPORT; TRITIUM

Citation Formats

Viswanthan, H S, Wolfsberg, A V, Reimus, P W, Ware, D, and Lu, G. Colloid facilitated transport in fractured rocks: parameter estimation and comparison with experimental data. United States: N. p., 2003. Web.
Viswanthan, H S, Wolfsberg, A V, Reimus, P W, Ware, D, & Lu, G. Colloid facilitated transport in fractured rocks: parameter estimation and comparison with experimental data. United States.
Viswanthan, H S, Wolfsberg, A V, Reimus, P W, Ware, D, and Lu, G. 2003. "Colloid facilitated transport in fractured rocks: parameter estimation and comparison with experimental data". United States. https://www.osti.gov/servlets/purl/810871.
@article{osti_810871,
title = {Colloid facilitated transport in fractured rocks: parameter estimation and comparison with experimental data},
author = {Viswanthan, H S and Wolfsberg, A V and Reimus, P W and Ware, D and Lu, G},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/810871}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 10 00:00:00 EST 2003},
month = {Fri Jan 10 00:00:00 EST 2003}
}

Conference:
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