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Geochemical And Hydrological Reactivity Of Heavy Metals In Soils

Author : H. Magdi Selim
ISBN : 9780203009604
Genre : Technology & Engineering
File Size : 89.55 MB
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The hydrological and geochemical interactions between clay minerals and organic matter in soils directly influence the reaction, behavior, and mobility of heavy metals in soils. Geochemical and Hydrological Reactivity of Heavy Metals in Soils is one of few books that comprehensively illustrates this cause-and-effect relationship. It highlights analytical techniques such as nuclear magnetic resonance spectroscopy and environmental electron microscopy and reveals how molecular-level modeling is used to remove metal contaminants from the environment. It is thus a practical guide for soil and groundwater scientists, ecologists, and government regulators.
Category: Technology & Engineering

Dynamics And Bioavailability Of Heavy Metals In The Rootzone

Author : H. Magdi Selim
ISBN : 1439826234
Genre : Science
File Size : 47.48 MB
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Concerns regarding heavy metal contamination in terrestrial ecosystems have prompted increasing efforts on limiting their bioavailability in the root zone. The complexity of the hydrologic system gives rise to the need for understanding the fate and transport of trace elements in the soil-water-plant environment. Dynamics and Bioavailability of Heavy Metals in the Rootzone provides a multidisciplinary approach with emphasis on geohydrology, plant and soil science, and environmental chemistry. The primary focus of this book is on different approaches that describe the dynamics of heavy metals in the soil system. These approaches are key to providing direct information on the concentration of heavy metals and hence on their transport, toxicity, and bioavailability. The book includes chapters covering equilibrium and kinetic models of heavy metal interactions as well as non-equilibrium transport models. It also discusses chemical processes controlling soil solution concentrations and modeling of heavy metals adsorption. Addressing the biological component of heavy metal dynamics, this work examines rhizosphere microorganisms and phytoremediation. Colloid-associated transport, which can result in groundwater contamination, is discussed in relation to reclaimed mine sites. The authors also present an overview of recent advancements in the biogeochemistry of trace elements and their environmental implications. Additional chapters include examination of various natural environments including runoff waters at the watershed scale, heavy metal transformation in wetlands, dynamics of trace metals in frequently flooded soils, and effects on crops in biosolid-amended soils. Reliable assessment of potential risks resulting from the transport of trace elements in the soil environment requires the examination of complex chemical and biological interactions due to the heterogeneous nature of soils. This text describes the current state of the art in this field and explores innovative experimental and theoretical/modeling approaches that will enhance this knowledge. The book provides a coherent presentation of recent advances in techniques, modeling, and dynamics and bioavailability of heavy metals in the root zone.
Category: Science

Chemical Bioavailability In Terrestrial Environments

Author :
ISBN : 0080557759
Genre : Science
File Size : 66.23 MB
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This book begins with an overview of current thinking on bioavailability, its definition, cutting-edge research in speciation and advancement in tools for assessing chemical bioavailability in the terrestrial environment. The second section of the book focuses on the role of chemical speciation in bioavailability. Section three addresses bioavailability and ecotoxicity of contaminants and leads into the next section on bioavailability of nutrients and agrichemicals. Subsequent sections provide an overview of tools currently being used and new cutting-edge techniques to assess contaminant bioavailability. The last section of the book builds on previous sections in relating bioavailability to risk assessment and how this could be used for managing risks associated with contaminated land. Provides the latest information on developing concepts and definitions of bioavailability Includes a discussion of bioavailability and ecotoxicity of contaminants and bioavailability of nutrients and agrichemicals for applications in agriculture Analyzes tools for assessing bioavailability and the role of bioavailability in risk assessment and remediation
Category: Science

Trace Elements From Soil To Human

Author : Alina Kabata-Pendias
ISBN : 9783540327141
Genre : Science
File Size : 82.30 MB
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The quality of food is such a live issue at the moment that this title is an essential tool for researchers in a variety of disciplines. It provides a review of the key features of trace elements in soils, plants and the food web on which human beings survive. The authors' intention is to summarize up-to-date interdisciplinary data for the concise presentation of our understanding of trace-element transfer in the chain from soil to man.
Category: Science

Environmental Geochemistry In Tropical And Subtropical Environments

Author : Luiz Drude de Lacerda
ISBN : 9783662070604
Genre : Nature
File Size : 63.76 MB
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This book incorporates twenty contributions on diverse aspects of the environmental geochemistry in tropical and sub-tropical environments, drawing together extensive original research not readily available elsewhere. Coverage includes intercontinental comparisons drawn on paleoclimatology, environmental impacts of mining and geochemistry of continetal shelf sediments.
Category: Nature

Geochemical And Hydrologic Processes And Their Protection

Author : Sidney Draggan
ISBN : UCSD:31822002417459
Genre : Science
File Size : 68.87 MB
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In 1984, the Conference on Environmental Quality, the Environmental Protection Agency, and the National Science Foundation convened a series of panel meetings to discuss long-term environmental issues. Environmental Impacts on Human Healthis the result of that prestigious conference. Drawing on contributions from nationally recognized scientists and experts from industry and government, this collection of papers will help to redirect long-term environmental research and development. The book addresses four topic areas: surface and groundwater processes and pollution; land/soil processes and pollution; atmospheric/oceanic processes and pollution; and multimedia toxic substance/hazardous waste research.
Category: Science