Main description:

This book provides a comprehensive overview of reaction processes in the Earth's crust and on its surface, both in the laboratory and in the field. A clear exposition of the underlying equations and calculation techniques is balanced by a large number of fully worked examples. The book uses The Geochemist's Workbench (R) modeling software, developed by the author and already installed at over 1000 universities and research facilities worldwide. Since publication of the first edition, the field of reaction modeling has continued to grow and find increasingly broad application. In particular, the description of microbial activity, surface chemistry, and redox chemistry within reaction models has become broader and more rigorous. These areas are covered in detail in this new edition, which was originally published in 2007. This text is written for graduate students and academic researchers in the fields of geochemistry, environmental engineering, contaminant hydrology, geomicrobiology, and numerical modeling.

Contents:

Preface to first edition; Preface to second edition; A note about software; 1. Introduction; 2. Modeling overview; Part I. Equilibrium in Natural Water: 3. The equilibrium state; 4. Solving for the equilibrium state; 5. Changing the basics; 6. Equilibrium models of natural waters; 7. Redox disequilibrium; 8. Activity coefficients; 9. Sorption and ion exchange; 10. Surface complexation; 11. Automatic reaction balancing; 12. Uniqueness; Part II. Reaction Processes: 13. Mass transfer; 14. Polythermal, fixed, and sliding paths; 15. Geochemical buffers; 16. Kinetics of dissolution and precipitation; 17. Redox kinetics; 18. Microbial kinetics; 19. Stable isotopes; 20. Transport in flowing groundwater; 21. Reactive transport; Part III. Applied Reaction Modeling: 22. Hydrothermal fluids; 23. Geothermometry; 24. Evaporation; 25. Sediment diagenesis; 26. Kinetics of water-rock interaction; 27. Weathering; 28. Oxidation and reduction; 29. Waste injection wells; 30. Petroleum reservoirs; 31. Acid drainage; 32. Contamination and remediation; 33. Microbial communities; Appendices; References; Index.