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Geochemical modeling is an important tool in environmental studies, and in the areas of subsurface and surface hydrology, pedology, water resources management, mining geology, geothermics, hydrocarbon geology, and related areas dealing with the exploration and extraction of natural resources. Geochemical modeling simulates the chemical and physical processes affecting the distribution of chemical species in liquid, gas, and solid phases. The reactions and processes, and their coupled interactions, are dependent on a number of environmental variables (e.g., temperature, pressure, ionic strength), and are also affected by the dynamics of matter and energy flows, including fluid, solute and heat flow.
This book seeks to make easily available to a broad readership some basic knowledge and fundamental concepts regarding the mathematical modeling of geochemical and groundwater processes, from the shallow vadose zone to deep geothermal systems. Since it is impossible to cover this subject given the space limitations, a selection of essential topics and case studies has been made. However, almost all the developments described herein are discussed in detail. Fundamental concepts, and the physical laws and equations needed to model different processes are described and presented in a simple and logical manner.
The book explains in a didactic manner the different applications of geochemical modeling, the existing conceptual methods, and the mathematical and numerical tools that can provide useful solutions. The reader will also receive a thorough understanding of (i) the physical laws describing the flow of mass and energy and the transport of solutes, (ii) the partial differential or algebraic equations representing these laws, and (iii) the principal numerical methods that allow approximate solutions of these equations and their corresponding mathematical models