Coupling Sorption to Soil Weathering During Reactive Transport: Impacts of Mineral Transformation and Sorbate Aging on Contaminant Speciation and Mobility

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Our work is aimed at developing a predictive-mechanistic understanding of the coupling between mineral weathering from caustic waste release and contaminant (Cs, Sr, I) fate and transport in waste-impacted sediments across space, time and geochemical gradients that encompass the process-level heterogeneity observed at the Hanford DOE site. Our specific objectives are: (1) to assess the molecular-scale mechanisms responsible for time-dependent sequestration of contaminants (Cs, Sr and I) during penetration of waste-induced weathering fronts through sedimentary media; (2) to determine the rate and extent of contaminant release from the sorbed state; (3) to develop a reactive transport model based on molecular ... continued below

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Chorover, Jon; Mueller, Karl T.; O’Day, Peggy; Serne, R. Jeff & Um, Wooyong June 1, 2006.

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Description

Our work is aimed at developing a predictive-mechanistic understanding of the coupling between mineral weathering from caustic waste release and contaminant (Cs, Sr, I) fate and transport in waste-impacted sediments across space, time and geochemical gradients that encompass the process-level heterogeneity observed at the Hanford DOE site. Our specific objectives are: (1) to assess the molecular-scale mechanisms responsible for time-dependent sequestration of contaminants (Cs, Sr and I) during penetration of waste-induced weathering fronts through sedimentary media; (2) to determine the rate and extent of contaminant release from the sorbed state; (3) to develop a reactive transport model based on molecular mechanisms and macroscopic flow experiments (from (1) and (2)) that accurately simulates adsorption, aging, and desorption at the bench-scale, and that can be applied to--and validated at--field sites such as Hanford.

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  • Report No.: ERSD-1027599-2006
  • Grant Number: FG02-06ER64190
  • DOI: 10.2172/896017 | External Link
  • Office of Scientific & Technical Information Report Number: 896017
  • Archival Resource Key: ark:/67531/metadc887570

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  • June 1, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 4, 2016, 6:50 p.m.

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Chorover, Jon; Mueller, Karl T.; O’Day, Peggy; Serne, R. Jeff & Um, Wooyong. Coupling Sorption to Soil Weathering During Reactive Transport: Impacts of Mineral Transformation and Sorbate Aging on Contaminant Speciation and Mobility, report, June 1, 2006; Tucson, Arizona. (digital.library.unt.edu/ark:/67531/metadc887570/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.