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RECORD NUMBER: 60 OF 307

OLS Field Name OLS Field Data
Main Title Experimental Study of Complete Dissolution of a Nonaqueous Phase Liquid in Saturated Porous Media.
Author Imhoff, P. T. ; Jaffe, P. R. ; Pinder., G. F. ;
CORP Author Princeton Univ., NJ. Dept. of Civil Engineering and Operations Research. ;North Carolina Univ. at Chapel Hill. Dept. of Environmental Sciences and Engineering. ;Vermont Univ., Burlington. Coll. of Engineering and Mathematics.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher cFeb 94
Year Published 1994
Report Number EPA-R-814946; EPA/600/J-94/133;
Stock Number PB94-159373
Additional Subjects Water pollution ; Porous materials ; Mathematical models ; Environmental transport ; Mass transfer ; Nonaqueous solvents ; Subsurface flow ; Dissolution ; Solvent extraction ; Gamma radiation ; Ground water ; Soil water ; Saturation ; Pore water ; Tests ; Porosity ; Reprint ; TCE(Trichloroethylene) ; Ethnylene/trichloro ; NAPLs(Nonaqueous phase liquids)
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB94-159373 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/01/1994
Collation 16p
Abstract
The attenuation of gamma radiation was utilized to measure changing residual trichloroethylene (TCE) saturation in an otherwise water-saturated porous medium as clean water was flushed through the medium. A front over which dissolution actively occurred was observed. Gamma attenuation measurements and analyses of effluent water samples indicate that there was minimal if any transport of TCE as colloidal droplets. Even as trapped TCE ganglia decreased in size due to dissolution, there is no evidence that they became mobile and advected downgradient. Mass transfer rate coefficients were computed and are shown to be a function of Darcy flux, TCE volumetric contents, and distance into the region of residual TCE. (Copyright (c) 1994 American Geophysical Union).