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EVALUATION OF SORPTION MODELS IN THE SIMULATION OF NAPHTHALENE TRANSPORT THROUGH SATURATED SOILS
Citation:
Liu, K., C. Enfield, AND S. Mravik. EVALUATION OF SORPTION MODELS IN THE SIMULATION OF NAPHTHALENE TRANSPORT THROUGH SATURATED SOILS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-91/257.
Description:
To show the effect of sorption model selection. he one-dimensional transport of naphthalene in two saturated soils was simulated using numerical models, which included the processes of dispersion, advection and sorption. hree different models describing the sorption process: 1) a local equilibrium model, 2) a first-order kinetic sorption model, and 3) a two-side model were examined. n addition, this study considered two types of boundary conditions: constant concentration and constant flu boundary condition. Simulations were made for data of naphthalene transport through a laboratory soil column packed with Lincoln or Eustis soil series. umerical simulation results show that the selection of te sorption model had significant effects on the numerical solutions. he numerical solution obtained using either the local equilibrium model or the first-order kinetic sorption model described the experimental data very well from the Lincoln soil column. n contrast, the numerical solution obtained using the two-site model described the experimental data for the Eustis soil better than the equilibrium or kinetic model. ifferent boundary conditions had little influence on the numerical solutions.