skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Estimating Uranium Partition Coefficients from Laboratory Adsorption Isotherms

Abstract

An estimated 330 metric tons of uranium have been buried in the radioactive waste Subsurface Disposal Area (SDA) at the Idaho National Engineering and Environmental Laboratory (INEEL). An assessment of uranium transport parameters is being performed to decrease the uncertainty in risk and dose predictions derived from computer simulations of uranium fate and transport to the underlying Snake River Plain Aquifer. Uranium adsorption isotherms have been measured in the laboratory and fit with a Freundlich isotherm. The Freundlich n parameter was statistically identical for 14 sediment samples. The Freundlich Kf for seven samples, where material properties have been measured, is correlated to sediment surface area. Based on these empirical observations, a model has been derived for adsorption of uranium on INEEL sedimentary materials using surface complexation theory. The model was then used to predict the range of adsorption conditions to be expected at the SDA. Adsorption in the deep vadose zone is predicted to be stronger than in near-surface sediments because the total dissolved carbonate decreases with depth.

Authors:
 [1]; ; ; ;  [2]
  1. (INEEL)
  2. (Clemson University)
Publication Date:
Research Org.:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID (US)
Sponsoring Org.:
USDOE Office of Environmental Management (EM) (US)
OSTI Identifier:
795186
Report Number(s):
INEEL/CON-02-00106
TRN: US0201220
DOE Contract Number:  
AC07-99ID13727
Resource Type:
Conference
Resource Relation:
Conference: Spectrum 2002, Reno, NV (US), 08/04/2002--08/08/2002; Other Information: PBD: 10 May 2002
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 54 ENVIRONMENTAL SCIENCES; ADSORPTION; ADSORPTION ISOTHERMS; CARBONATES; COMPUTERS; ISOTHERMS; METRICS; RADIOACTIVE WASTES; SEDIMENTS; SNAKE RIVER PLAIN; SURFACE AREA; TRANSPORT; URANIUM; RADIOACTIVE WASTE; VADOSE ZONE

Citation Formats

Hull, L.C., Grossman, C., Fjeld, R.A., Coates, J.T., and Elzerman, A.W.. Estimating Uranium Partition Coefficients from Laboratory Adsorption Isotherms. United States: N. p., 2002. Web.
Hull, L.C., Grossman, C., Fjeld, R.A., Coates, J.T., & Elzerman, A.W.. Estimating Uranium Partition Coefficients from Laboratory Adsorption Isotherms. United States.
Hull, L.C., Grossman, C., Fjeld, R.A., Coates, J.T., and Elzerman, A.W.. Fri . "Estimating Uranium Partition Coefficients from Laboratory Adsorption Isotherms". United States. doi:. https://www.osti.gov/servlets/purl/795186.
@article{osti_795186,
title = {Estimating Uranium Partition Coefficients from Laboratory Adsorption Isotherms},
author = {Hull, L.C. and Grossman, C. and Fjeld, R.A. and Coates, J.T. and Elzerman, A.W.},
abstractNote = {An estimated 330 metric tons of uranium have been buried in the radioactive waste Subsurface Disposal Area (SDA) at the Idaho National Engineering and Environmental Laboratory (INEEL). An assessment of uranium transport parameters is being performed to decrease the uncertainty in risk and dose predictions derived from computer simulations of uranium fate and transport to the underlying Snake River Plain Aquifer. Uranium adsorption isotherms have been measured in the laboratory and fit with a Freundlich isotherm. The Freundlich n parameter was statistically identical for 14 sediment samples. The Freundlich Kf for seven samples, where material properties have been measured, is correlated to sediment surface area. Based on these empirical observations, a model has been derived for adsorption of uranium on INEEL sedimentary materials using surface complexation theory. The model was then used to predict the range of adsorption conditions to be expected at the SDA. Adsorption in the deep vadose zone is predicted to be stronger than in near-surface sediments because the total dissolved carbonate decreases with depth.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri May 10 00:00:00 EDT 2002},
month = {Fri May 10 00:00:00 EDT 2002}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: