Laboratory column experiments for radionuclide adsorption studies of the Culebra dolomite member of the Rustler Formation

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Radionuclide transport experiments were carried out using intact cores obtained from the Culebra member of the Rustler Formation inside the Waste Isolation Pilot Plant, Air Intake Shaft. Twenty-seven separate tests are reported here and include experiments with {sup 3}H, {sup 22}Na, {sup 241}Am, {sup 239}Np, {sup 228}Th, {sup 232}U and {sup 241}Pu, and two brine types, AIS and ERDA 6. The {sup 3}H was bound as water and provides a measure of advection, dispersion, and water self-diffusion. The other tracers were injected as dissolved ions at concentrations below solubility limits, except for americium. The objective of the intact rock column ... continued below

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359 p.

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Lucero, D.A.; Heath, C.E. & Brown, G.O. April 1, 1998.

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  • Lucero, D.A.
  • Heath, C.E. Sandia National Labs., Albuquerque, NM (United States)
  • Brown, G.O. Oklahoma State Univ., Stillwater, OK (United States). Biosystems and Agricultural Engineering Dept.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Radionuclide transport experiments were carried out using intact cores obtained from the Culebra member of the Rustler Formation inside the Waste Isolation Pilot Plant, Air Intake Shaft. Twenty-seven separate tests are reported here and include experiments with {sup 3}H, {sup 22}Na, {sup 241}Am, {sup 239}Np, {sup 228}Th, {sup 232}U and {sup 241}Pu, and two brine types, AIS and ERDA 6. The {sup 3}H was bound as water and provides a measure of advection, dispersion, and water self-diffusion. The other tracers were injected as dissolved ions at concentrations below solubility limits, except for americium. The objective of the intact rock column flow experiments is to demonstrate and quantify transport retardation coefficients, (R) for the actinides Pu, Am, U, Th and Np, in intact core samples of the Culebra Dolomite. The measured R values are used to estimate partition coefficients, (kd) for the solute species. Those kd values may be compared to values obtained from empirical and mechanistic adsorption batch experiments, to provide predictions of actinide retardation in the Culebra. Three parameters that may influence actinide R values were varied in the experiments; core, brine and flow rate. Testing five separate core samples from four different core borings provided an indication of sample variability. While most testing was performed with Culebra brine, limited tests were carried out with a Salado brine to evaluate the effect of intrusion of those lower waters. Varying flow rate provided an indication of rate dependent solute interactions such as sorption kinetics.

Physical Description

359 p.

Notes

INIS; OSTI as DE98005268

Source

  • Other Information: PBD: Apr 1998

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  • Other: DE98005268
  • Report No.: SAND--97-1763
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/654012 | External Link
  • Office of Scientific & Technical Information Report Number: 654012
  • Archival Resource Key: ark:/67531/metadc702889

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Creation Date

  • April 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 14, 2016, 4:15 p.m.

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Lucero, D.A.; Heath, C.E. & Brown, G.O. Laboratory column experiments for radionuclide adsorption studies of the Culebra dolomite member of the Rustler Formation, report, April 1, 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc702889/: accessed June 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.