Equilibrium approaches to organic contaminant transport modeling in a multi-phase groundwater system.

摘要: Mathematical models were developed in this study based on equilibrium sorption approaches to simulate transport and retardation of organic contaminants such as polycyclic aromatic hydrocarbons a multi-phase groundwater system. In model development, the Langmuir or Freundlich isotherms incorporated into factor account for nonlinear colloids solid matrix. Numerical solutions equations obtained using fully implicit finite difference method. Simulation results showed that contaminant varied temporally spatially system (dissolved phase, two mobile colloidal phases). also indicated concentration mobility would be key factors controlling Sensitivity analysis demonstrated sensitive changes isotherm coefficients distribution coefficients.