Coupling Between Flow and Precipitation in Heterogeneous Subsurface Environments and Effects On Contaminant Fate and Transport

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Reactive mixing fronts can occur at large scales, e.g. when chemical amendments are injected in wells, or at small scales (pore-scales) when reactive intermediates are being generated in situ at grain boundaries, cell surfaces and adjacent to biofilms. The product of the reactions such as mineral precipitates, biofilms or filtered colloids modifies permeability leading to the complex coupling between flow and reactions and precipitation. The objectives are to determine how precipitates are distributed within large and small scale mixing fronts, how permeability and flow is modified by precipitation, how the mobility of a representative contaminant, strontium, is affected by the ... continued below

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Tartakovsky, Alexandre M.; Redden, George D.; Fujita, Yoshiko; Scheibe, Tim; Smith, Robert; Reddy, Michael et al. June 2006.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 13 times . More information about this report can be viewed below.

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Description

Reactive mixing fronts can occur at large scales, e.g. when chemical amendments are injected in wells, or at small scales (pore-scales) when reactive intermediates are being generated in situ at grain boundaries, cell surfaces and adjacent to biofilms. The product of the reactions such as mineral precipitates, biofilms or filtered colloids modifies permeability leading to the complex coupling between flow and reactions and precipitation. The objectives are to determine how precipitates are distributed within large and small scale mixing fronts, how permeability and flow is modified by precipitation, how the mobility of a representative contaminant, strontium, is affected by the precipitation of carbonates, and how subsequent dissolution of the carbonates result in mobilization of Sr and increased flow. The desired outcomes of the project are to help develop methods leading to sequestration of metal contaminants, and to determine how macroscopic field-scale modeling can be applied to predict the outcome of remediation activities.

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  • Report No.: ERSD-1027871-2006
  • Grant Number: None
  • DOI: 10.2172/895925 | External Link
  • Office of Scientific & Technical Information Report Number: 895925
  • Archival Resource Key: ark:/67531/metadc881799

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Office of Scientific & Technical Information Technical Reports

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  • June 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 4, 2016, 4:19 p.m.

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Tartakovsky, Alexandre M.; Redden, George D.; Fujita, Yoshiko; Scheibe, Tim; Smith, Robert; Reddy, Michael et al. Coupling Between Flow and Precipitation in Heterogeneous Subsurface Environments and Effects On Contaminant Fate and Transport, report, June 2006; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc881799/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.