The use of batch tests as a screening tool for radionuclide sorption characterization studies; Hanford, Washington, U.S.A.
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|Authors:||Puls, Robert W.; Ames, L. L.; McGarrah, J. E.|
|Author Affiliations:||Primary: |
U. S. Environ. Prot. Agency, R.S. Kerr Environ. Res. Lab., Ada, OK, United States
Pac. Northwest Lab., United States
|Volume Title:||Applied Geochemistry|
|Source:||Applied Geochemistry, 4(1), p.63-77. Publisher: Pergamon, Oxford-New York-Beijing, International. ISSN: 0883-2927|
|Note:||In English. 32 refs.; illus. incl. 10 tables|
|Summary:||This is a saturated site where ground-water transport of radionuclides away from a repository is the mechanism for release to the accessible environment. Sorption as defined here is the predominant means by which the movement of radionuclides is retarded in a groundwater flow system. Preliminary laboratory batch testing results are presented in the context of the entire site system sorption characterization strategy. An anoxic experimental approach was used with basalt flow top core samples recovered from depths of 915 m below the Earth's surface. The kinetics of sorption were relatively slow and increased in the order U <Se <Sr, Ra. Proportionate removal increased in the order Se <U <Sr <Ra. Freundlich isotherms were linear for Sr, U and Se over the concentrations tested. The batch results were helpful from a screening standpoint to indicate the direction of further testing, but were unsatisfactory by themselves to explain sorption behaviour adequately.|
|Subjects:||Engineering geology; Ground water; High-level waste; Isotopes; Radioactive isotopes; Radioactive waste; Saturated zone; Sorption; Surveys; Waste disposal; Water quality; Hanford Site; United States; Washington|
|Copyright Information:||GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom|
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