HR: 1340h
AN: H53E-1468    [Abstracts]
TI: Complete Immiscible Liquid Dissolution in Natural Porous Media
AU: * Russo, A
EM: arusso@email.arizona.edu
AF: Department of Soil, Water and Environmental Science, University of Arizona, Tucson, AZ 85721, United States
AU: Marble, J
EM: jmarble@hwr.arizona.edu
AF: Department of Soil, Water and Environmental Science, University of Arizona, Tucson, AZ 85721, United States
AU: Murao, A
EM: muraoa@gmail.edu
AF: Department of Soil, Water and Environmental Science, University of Arizona, Tucson, AZ 85721, United States
AU: Brusseau, M L
EM: brusseau@ag.arizona.edu
AF: Department of Soil, Water and Environmental Science, University of Arizona, Tucson, AZ 85721, United States
AU: Brusseau, M L
EM: brusseau@ag.arizona.edu
AF: Department of Hydrology and Water Resources, University of Arizona, Tucson, AZ 85721, United States
AB: Immiscible liquids have proven to be a lasting source of subsurface contamination at many hazardous waste sites. Understanding the transport and fate behavior of these contaminants will allow for better site characterization and determination of applicable remediation technologies. Experiments were conducted to investigate immiscible liquid dissolution behavior in several natural porous media, comprising different particles size distributions. Immiscible liquid dissolution was investigated at the column scale by conducting experiments using homogeneously packed columns (7cm long) containing a residual saturation of trichloroethene. Nonideal dissolution behavior was observed, wherein secondary steady state dissolution regions occurred. Such nonideal behavior was not observed for a well-sorted silica sand. Imaging studies using synchrotron X-ray microtomography were conducted at Argonne National Lab, Argonne, IL to characterize the pore-scale morphology of the immiscible liquid as a function of dissolution.
DE: 1831 Groundwater quality
DE: 1832 Groundwater transport
SC: Hydrology [H]
MN: 2007 Fall Meeting