TY - JOUR
T1 - Dissolution of a multicomponent DNAPL pool in an experimental aquifer
AU - Lee, Kenneth Y.
AU - Chrysikopoulos, Constantinos V.
N1 - Funding Information:
This research was sponsored by the Environmental Protection Agency, under Grant No. R-823579-01-0. However, the manuscript has not been subjected to the Agency's peer and administrative review, and therefore, does not necessarily reflect the views of the Agency and no official endorsement should be inferred.
PY - 2006/2/6
Y1 - 2006/2/6
N2 - This paper presents the results from a well-defined, circular-shaped, multicomponent dense nonaqueous phase liquid (DNAPL) pool dissolution experiment conducted in a three-dimensional, bench scale model aquifer. The multicomponent pool is a mixture of tetrachloroethylene (PCE) and 1,1,2-trichloroethane (1,1,2-TCA); PCE was the major component and 1,1,2-TCA was the minor component. Downgradient plume concentrations were measured at five specific locations over time until the majority of the 1,1,2-TCA was depleted from the DNAPL pool source. The experimental results suggest distinct spatial-temporal plume patterns for minor DNAPL components versus major DNAPL components. The downgradient concentration varied over time for 1,1,2-TCA while a stable plume developed for PCE. A semi-analytical solution for contaminant transport resulting from dissolution of multicomponent nonaqueous phase liquid pools successfully simulated the plume structure and dynamics for both the major and minor DNAPL components.
AB - This paper presents the results from a well-defined, circular-shaped, multicomponent dense nonaqueous phase liquid (DNAPL) pool dissolution experiment conducted in a three-dimensional, bench scale model aquifer. The multicomponent pool is a mixture of tetrachloroethylene (PCE) and 1,1,2-trichloroethane (1,1,2-TCA); PCE was the major component and 1,1,2-TCA was the minor component. Downgradient plume concentrations were measured at five specific locations over time until the majority of the 1,1,2-TCA was depleted from the DNAPL pool source. The experimental results suggest distinct spatial-temporal plume patterns for minor DNAPL components versus major DNAPL components. The downgradient concentration varied over time for 1,1,2-TCA while a stable plume developed for PCE. A semi-analytical solution for contaminant transport resulting from dissolution of multicomponent nonaqueous phase liquid pools successfully simulated the plume structure and dynamics for both the major and minor DNAPL components.
KW - Contaminant transport
KW - Dissolution
KW - Groundwater pollution
KW - Mathematical models
KW - Nonaqueous phase liquids
UR - http://www.scopus.com/inward/record.url?scp=32644432562&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2005.08.005
DO - 10.1016/j.jhazmat.2005.08.005
M3 - Article
C2 - 16203082
AN - SCOPUS:32644432562
SN - 0304-3894
VL - 128
SP - 218
EP - 226
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 2-3
ER -
