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Sorption and Transport Behavior of Naphthalene in an Aggregated Soil

^a Biosystems Engineering and Environmental Science Dep., The University of Tennessee, Knoxville, TN 37996
^b Dep. of Civil Engineering and Geological Sciences, University of Notre Dame, Notre Dame, IN 46556
^c Dep. of Agronomy, Iowa State University, Ames, IA 50011

View larger version (17K): [in a new window]   Fig. 1. Isotherms for the sorption of naphthalene for two ionic strengths (0.03 and 1.5 M). Nonlinear fit of a Freundlich equation (Eq. [1]) to the sorption data is represented by the solid lines.

View larger version (20K): [in a new window]   Fig. 2. Naphthalene breakthrough curves (BTC) for 0.03 and 1.5 M ionic strengths. The pore water velocity of the columns was 24 cm h-1.

View larger version (26K): [in a new window]   Fig. 3. Comparison of breakthrough curves for 12 and 24 cm h-1 and 0.03 and 1.5 M ionic strengths.

View larger version (29K): [in a new window]   Fig. 4. Observed and predicted naphthalene breakthrough curves (BTC). Predicted BTCs were calculated with the sorption parameters, Kf and n, determined from the batch study with the hydrodynamic dispersion coefficient (D) obtained from the column study.