Author(s)

Karen M. Salvage and Gour-Tsyh Yeh

Abstract

Modeling chemically and microbiologically reactive contaminant transport in porous media Karen M. Salvage* and Gour-Tsyh Yeh The Pennsylvania State University, Department of Civil and Environmental Engineering, University Park, PA Abstract HYDROBIOGEOCHEM is a finite element model which couples simulation of microbiological and geochemical transformation with hydrological transport of contaminants in soil and groundwater. Microbiological reactions addressing growth of biomass and degradation of substrate by microbial metabolism of substrates, nutrients, and electron acceptors are simulated using modified Monod kinetics. Chemical processes in this code may be equilibrium or kinetic and include aqueous complexation, acid-base reactions, reduction/oxidation reactions, adsorption, ion-exchange and precipitation/dissolution. Simulation of hydrological transport is performed in two dimensions and includes the processes of advection, dispersion, and molecular diffusion. Two alt

Keywords