Behavior of dense immiscible solvents in fractured clay-rich soils. Technical progress report, 1997

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'The overall goal of the research program is to develop a better understanding of the physical and chemical factors and processes influencing fate and transport of immiscible and dissolved-phase dense solvents in groundwater in fractured, highly weathered clays and shales. These widespread materials are much different, physically and chemically, from granular soils or fractured low porosity rocks, which are the media used for most previous investigations of solvent behavior. The investigations are needed to provide a basic scientific framework for assessment of solvent transport and remediation in fractured clay-rich deposits. Specific experimental objectives include: (1) Determine the nature and distribution ... continued below

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7 pages

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McKay, L.D. October 13, 1997.

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Description

'The overall goal of the research program is to develop a better understanding of the physical and chemical factors and processes influencing fate and transport of immiscible and dissolved-phase dense solvents in groundwater in fractured, highly weathered clays and shales. These widespread materials are much different, physically and chemically, from granular soils or fractured low porosity rocks, which are the media used for most previous investigations of solvent behavior. The investigations are needed to provide a basic scientific framework for assessment of solvent transport and remediation in fractured clay-rich deposits. Specific experimental objectives include: (1) Determine the nature and distribution of porosity in these materials, and its influence on pressure-saturation behavior for immiscible solvents. This includes determining values for entry pressure, residual saturation, fracture aperture and matrix pore size distribution, as well as assessment of methodologies for measuring/characterizing these parameters. (2) Determine the influence of dissolution, sorption and diffusion into the matrix on long term disappearance of residual solvents in the fractured materials. (3) Assessment of the potential for natural attenuation of common solvents, especially TCE, in these deposits. This includes investigating the natural geochemistry and microbiology of the deposits, and assessing biologically-mediated degradation of solvents in the laboratory and at existing contaminated field sites.'

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7 pages

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  • Other: DE00013612
  • Report No.: EMSP-55083--97
  • Grant Number: NONE
  • DOI: 10.2172/13612 | External Link
  • Office of Scientific & Technical Information Report Number: 13612
  • Archival Resource Key: ark:/67531/metadc619228

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Office of Scientific & Technical Information Technical Reports

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  • October 13, 1997

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • June 13, 2016, 4:23 p.m.

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McKay, L.D. Behavior of dense immiscible solvents in fractured clay-rich soils. Technical progress report, 1997, report, October 13, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc619228/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.