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Our technology-based society demands the use of enormous quantities of heavy metals. Yet society also demands the prevention, and the remediation, of soil contaminated with heavy metals. A unified presentation of recent developments that will help achieve these goals, Geochemical and Hydrological Reactivity of Heavy Metals in Soils discusses new techniques used to analyze the diverse array of surface reactions governed by physical, chemical, and biological processes. The book covers the reaction mechanisms of the component molecules, the linkages between these molecules, and the juxtaposition and spacing of reactive surface functional groups. It highlights analytical techniques for characterizing mobile soil colloids, provides the latest results on important biologically mediated pathways, and reveals how modeling perspectives from molecular to macroscopic levels are all used to gain new insights into metal contaminant processes in the environment. With contributions from a hand-picked panel and the editorial guidance of undisputed experts, the book focuses on the complexity of chemical processes in "real" systems and provides the tools used to understand them.
Contents
Hydrological and Geochemical Processes Controlling the Fate and Transport of Contaminants in Fractured Bedrock. Mineral Controls in Colloid-Mediated Transport of Metals in Soil Environments. A Web-Based Three-Dimensional Simulation System for Solute Transport in Soil. Effect of Structural Charges on Proton Adsorption at Clay Surfaces. Molecular Modeling of Fulvic and Humic Acids: Charging Effects and Interactions with Al3+. Silicon-Organic Interactions in the Environment and in Organisms. Formation of Buigenic Manganese Oxides and Their Influence on the Scavenging of Toxic Trace Elements. Zinc Speciation in Contaminated Soils Combining Direct and Indirect Characterization Methods. Reduction/Cation Exchange Model of the Coincident Release of Manganese and Trace Metals following Soil Reduction. Behavior of Heavy Metals in Soil: Effect of Dissolved Organic Matter. Analytical Techniques for Characterizing Complex Mineral Assemblages: Mobile Soil and Groundwater Colloids. Kinetic Modeling of Sulfate Transport in a Forest Soil. Solubility of Fluoride in Semi-Arid Environments. Index.
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