Diffusion Models of Environmental Transport

Diffusion Models of Environmental Transport provides more than 40 analytical models of diffusion and advective-diffusion in one, two, and three layer systems, subject to a wide range of boundary and initial conditions. Reible and Choy use their 20-plus years of combined experience to create a thorough exploration of fate and transport models. The authors supply complete details of the solutions to the models, with Mathcad spreadsheets to aid in their use, for those who wish for a deeper understanding. For others, who do not have the time or the need, the solutions themselves are ready to be picked up and used.

Choy, Bruce; Reible, Danny D.

Environmental Transport Modeling Introduction Outline Preliminaries Equilibrium Between Environmental Tables Diffusion and the Diffusion Coefficient Surface Mass Transfer Coefficient Mass Balance and Transport Equations Diffusion in a Semi-Infinite Soil/Sediment System Introduction Analysis Summary Numerical Evaluation Development Diffusion in a Finite Layer Soil/Sediment Bed Introduction Analysis Summary Numerical Evaluation Development Diffusion in a Two-Layer Composite Soil/Sediment Bed Introduction Analysis Summary Numerical Evaluation Development Diffusion in a Three-Layer Composite Soil/Sediment Bed Introduction Analysis Summary Numerical Evaluation Development Advection-Diffusion Models Introduction Analysis Summary Numerical Evaluation Development Volatile Liquid Evaporation and Diffusion Through a Soil/Sediment Bed Introduction Analysis Summary Numerical Evaluation Development Diffusion in Systems with Time Dependent Soil-Air Partition Coefficients Introduction Mathematical Analysis Analysis Summary Variable Transformation on a Variety of Time Dependent Air-Soil Partition Coefficient Functions Development Miscellaneous Transport Models Constant Flux, Volatile Liquid Evaporation with Uniform Initial Liquid Saturation Appendices Error Function Laplace Transformation Roots of Transcendental Equations Predicting the Diffusion Coefficient in Vapor Predicting the Diffusion Coefficient in Liquid Sample Calculations of Models Using Mathcad (TM) 7