Diffusion Models of Environmental Transport
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Features
Summary
Fate and transport models are critical components in the determination of the exposure to and risk from hazardous contaminants. Analytical models are preferable because they are generally more accessible, more reliable, and require fewer computational resources. Surprisingly, until today, only a limited number of analytical models have been accessible in the literature.
Now, there is Diffusion Models of Environmental Transport, which 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. This text illustrates applications to contaminant transport in sediments and soils, including porewater and vapor transport, and also provides Mathcad spreadsheets to aid in the use of these models.
The authors supply complete details of the solutions to the models 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.
Reible and Choy use their 20-plus years of cumulative experience to create a thorough exploration of fate and transport models. This comprehensive text furnishes an invaluable reference for students and environmental professionals.
Table of Contents
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™ 7
Editorial Reviews
"The authors make a point to correct some of the misuses of terminology commonly encountered in this field... a resource appropriate for professionals, graduate, and upper-division undergraduate students, and faculty."
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