Partitioning of hydrophobic organic compounds to sorbed surfactants. 2. Model development/predictions for surfactant-enhanced remediation applications

摘要: A one-dimensional numerical model was developed to simulate the performance of surfactant-enhanced remediation (SER) applications for saturated subsurface systems containing adsorbed hydrophobic organic compounds (HOCs). The incorporates temporally and spatially dependent HOC surfactant mass balance equations compute distributions in aqueous, micellar, sorbed surfactant, solid phases. In particular, accounts losses by sorption media subsequent partitioning HOCs surfactant. Parameter values were estimated from experimental rate equilibrium data literature, sensitivity analysis conducted evaluate potential SER applications. Simulation results show that relative affinity surfactants immobile phase (i.e., respective retardation factors) is critical determining whether contaminant desorption can be...