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Upscaling of U (VI) desorption and transport from decimeter‐scale heterogeneity to plume‐scale modeling

December 31, 2015

Scientifically defensible predictions of field scale U(VI) transport in groundwater requires an understanding of key processes at multiple scales. These scales range from smaller than the sediment grain scale (less than 10 μm) to as large as the field scale which can extend over several kilometers. The key processes that need to be considered include both geochemical reactions in solution and at sediment surfaces as well as physical transport processes including advection, dispersion, and pore-scale diffusion. The research summarized in this report includes both experimental and modeling results in batch, column and tracer tests. The objectives of this research were to: (1) quantify the rates of U(VI) desorption from sediments acquired from a uranium contaminated aquifer in batch experiments;(2) quantify rates of U(VI) desorption in column experiments with variable chemical conditions, and(3) quantify nonreactive tracer and U(VI) transport in field tests.

Citation Information

Publication Year 2015
Title Upscaling of U (VI) desorption and transport from decimeter‐scale heterogeneity to plume‐scale modeling
Authors Gary P. Curtis, Matthias Kohler, Ramakrishnan Kannappan, Martin A. Briggs, Frederick D. Day-Lewis
Publication Type Report
Publication Subtype Federal Government Series
Series Title Technical Report
Series Number DOE-USGS--SC0003681
Index ID 70159686
Record Source USGS Publications Warehouse
USGS Organization National Research Program - Western Branch

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Gary Curtis (Former Employee)

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