Colloid Genesis / Transport and Flow Pathway Alterations Resulting From Interactions of Reactive Waste Solutions and Hanford Vadose Zone Sediments
نویسندگان
چکیده
The Hanford Site was one of the DOE’s major nuclear weapons production sites from 1940 to 1989. Over time, 67 of the 149 single-shell tanks have leaked or are suspected of having leaked [1]. Contaminants such as Tc and U have been found in elevated concentrations in the vadose zone and groundwater beneath the single shell tank farms [2]. In order to make decisions on remedial actions, numerous scientists have been investigating these problems through the DOE’s Environment Management Science Program Hanford Vadose Zone Project. The U.S. Department of Energy has on-going projects at the Hanford site to monitor existing contaminant plumes in groundwaters, and to characterize the subsurface distribution of contaminants in tank farms. These efforts include the Tank Farm Vadose Zone Characterization Project and the 200 Area Remedial Action Project.
منابع مشابه
Effect of saline waste solution infiltration rates on uranium retention and spatial distribution in Hanford sediments.
The accidental overfilling of waste liquid from tank BX-102 at the Hanford Site in 1951 put about 10 t of U(VI) into the vadose zone. In order to understand the dominant geochemical reactions and transport processes that occurred during the initial infiltration and to help understand current spatial distribution, we simulated the waste liquid spilling event in laboratory sediment columns using ...
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Research Objectives: This project seeks to improve the basic understanding of colloid and colloid-facilitated transport of Cs in the vadose zone. The specific objectives are: • Determine the structure, composition, and surface charge characteristics of colloidal particles formed under conditions similar to those occurring during leakage of waste typical of Hanford tank supernatants into soils a...
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s and Presentations: Jardine, P.M. 1999. Fate and Transport of Radionuclides Beneath the Hanford Tank-Farms: Unraveling Coupled Geochemical and Hydrological Processes in the Vadose Zone. Workshop on Hanford Tank Farm Needs, Environmental Management Science Program, Pacific Northwest National Laboratory. October, 1999, Richland, WA. Jardine, P.M., S.C. Brooks, S.E. Fendorf, C.C. Ainsworth, and B...
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more than 4 million liters of hazardous and radioactive waste in the vadose zone. Relatively mobile radionuAccelerated migration of contaminants in the vadose zone has clides such as 99Tc, 129I, U, and 3H have traveled further been observed beneath tank farms at the U.S. Department of Energy’s Hanford Reservation, Richland, WA. This paper focuses on quantifythan predicted by current models and ...
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on the Columbia River plateau, a semiarid region in south-central Washington (Fig. 1), the Hanford Site At the Hanford Site, highly radioactive and chemically aggressive served as a plutonium production facility for nuclear waste fluids have leaked from underground storage tanks into the vadose zone. This paper addresses hydrogeological issues at the weapons from 1944 to the end of the Cold War...
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