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Title: Radionuclide migration as a function of mineralogy

The migration of radionuclides is studied as a function of mineralogy utilizing batch sorption and column experiments. The transport behavior of alkaline, alkaline-earth, and transition metals, and actinide species is studied in pure mineral separates. The solid phases utilized for these investigations are silicates, alumino-silicates, carbonates, and metal oxides and oxyhydroxides. The results of this effort are utilized to aid in the elucidation of the dominant chemical mechanisms of radionuclide migration, the prediction of radionuclide transport in conditions similar to those expected at the proposed high-level nuclear waste repository at Yucca Mountain, Nevada, and the identification of materials that act as natural geological barriers or that can be utilized as strong sorbers in engineered barriers. 9 refs., 2 figs., 2 tabs.
Authors:
; ;
Publication Date:
OSTI Identifier:
138004
Report Number(s):
LA-UR--91-113; CONF-910435--45
ON: DE91007385; TRN: 91:004784
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: 2. annual American Nuclear Society (ANS) international high level radioactive waste management conference, Las Vegas, NV (United States), 28 Apr - 3 May 1991; Other Information: PBD: [1991]
Research Org:
Los Alamos National Lab., NM (United States)
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; 54 ENVIRONMENTAL SCIENCES; HIGH-LEVEL RADIOACTIVE WASTES; UNDERGROUND DISPOSAL; MINERALS; SORPTIVE PROPERTIES; QUARTZ; RADIONUCLIDE MIGRATION; FELDSPARS; CLINOPTILOLITE; MONTMORILLONITE; CALCITE; HEMATITE; HOLLANDITE; MANGANESE HYDROXIDES; OXIDE MINERALS; SORPTION; EXTRACTION COLUMNS; STRONTIUM 85; BARIUM 133; CESIUM 137; MINERALOGY; PERTECHNETATES; NEPTUNIUM 237; PLUTONIUM 239; AMERICIUM 241; CHEMICAL REACTIONS; FORECASTING; GROUND WATER; CRISTOBALITE; Yucca Mountain Project