Use of Fixed-Bed Adsorber Models to Predict the Fluxes of Toxic Substances in Groundwaters and Soil Environments

摘要

Effective management of a ground water system requires description and prediction of the transport and fate of contaminants in that system. This can be facilitated by using mathematical models which accurately represent the physical phenomena operative in the system. One of the most significant phenomena impacting the transport of many organic pollutants is partitioning between the solid (soil) and aqueous (ground water) phases. Data collected for four sands and lindane indicates that equilibrium sorption is a nonlinear function best fit by the Freundlich isotherm. Results collected from completely mixed batch reactors of the bottle and stirred type indicate that sorption of lindane on the soils investigated is a kinetically controlled phenomena. These kinetic sorption data may be mathematically modeled in a number of ways with the Michigan Adsorption Design and Applications Model (MADAM) demonstrating good agreement with measured data.