A groundbreaking text and professional resource on naturalattenuation technologyNatural attenuation is rapidly becoming a widely used approachto manage groundwater and soil contamination by hazardoussubstances in petroleum-product releases and leachate fromhazardous waste sites and landfills. This book provides, under onecover, the current methodologies needed by groundwater scientistsand engineers in their efforts to evaluate subsurface contaminationproblems, to estimate risk to human health and ecosystems throughmathematical models, and to design and formulate appropriateremediation strategies.Incorporating the authors' extensive backgrounds as educators,researchers, and consultants in environmental biotechnology andhydrogeology, the text emphasizes new concepts and recent advancesin the science, including:* Quantification of the role of microbes in naturalattenuation* Biodegradation and chemical transformation principles* Immobilization and phase change* Biotransformation mechanisms* Groundwater flow and contaminant transport* Analytical models for contaminant transport and reactionprocesses* Numerical modeling of contaminant transport, transformation,and degradationDetailed descriptions of fundamental processes, characterizationapproaches, and analytical and numerical methods tied to relevantreal-world applications make Bioremediation and NaturalAttenuation: Process Fundamentals and Mathematical Models botha timely course text in hydrogeology and environmental engineeringand a valuable reference for anyone in the groundwater or riskassessment professions.

Preface.1. Introduction to Bioremediation.2. Geochemical Attenuation Mechanisms.3. Biodegradation Principles.4. Fundamentals of Ground Water Flow and Contaminant TransportProcesses.5. Fate and Transport Equations and Analytical Models forNatural Attenuation.6. Numerical Modeling of Contaminant Transport, Transformation,and Degradation Processes.7. Field and Laboratory Techniques to Determine Site-SpecificParameters for Modeling the Fate and Transport of GroundwaterPollutants.8. Bioremediation Technologies.9. Performance Assessment and Demonstration of Bioremediationand Natural Attenuation.Appendix A: Chemical Properties of Various Compounds.Appendix B: Free Energy and Thermodynamic Feasibility ofChemical and Biochemical Reactions.Appendix C: Commonly Used Numerical Groundwater Flow and SoluteTransport Codes (Modified after Wiedemeier et al., 1999).Appendix D: Nonparametric Statistical Tests for Determining theEffectiveness of Natural Attenuation (after Wisconsin Department ofNatural Resources).Appendix E: Critical Values of the Studentt-Distribution.Glossary.Index.