Read more
Informationen zum Autor Kevin Henke is a research scientist at the Centre for Applied Energy Research at the University of Kentucky. He has a M.S. and? Ph.D. in Geology from the University of North Dakota. His research includes investigating water and air quality issues related to coal combustion, studying the impact of mercury and other heavy metals on water quality, and investigating the leaching of inorganics from coal combustion by-products. He is also visiting Assistant Professor of Geology, Department of Geological Sciences, University of Kentucky, Lexington (1998, 2000-2002) and has taught geochemistry, mineralogy, teaching methods courses, and undergraduate introductory courses in environmental geology, natural resources and physical geology. Professor David A. Atwood, is based in the Chemistry Department of the University of Kentucky. He obtained his B.S. from the University of Alabama and his Ph.D. from the University of Texas in 1992. Research in the Atwood group is designed to address both fundamental and applied aspects of the main group metals. Professor Atwood's teaching includes courses in solid-state materials including biomineralization. Dr Lisa Blue is a graduate student based in the chemistry department of the University of Kentucky. Klappentext This book presents an overview of the chemistry, geology, toxicology and environmental impacts of arsenic, presenting information on relatively common arsenic minerals and their key properties. In addition, it includes discussions on the environmental impacts of the release of arsenic from mining and coal combustion. Although the environmental regulations of different nations vary and change over time, prominent International, North American, and European guidelines and regulations on arsenic will be reviewed. Includes information on recent environmental catastrophes (e.g. Bangladesh and China)A thorough discussion of the arsenic cycle, including the cosmological origin of arsenicIncludes Appendices providing extensive glossary and measurement conversion tables Zusammenfassung This book presents an overview of the chemistry! geology! toxicology and environmental impacts of arsenic! presenting information on relatively common arsenic minerals and their key properties. In addition! it includes discussions on the environmental impacts of the release of arsenic from mining and coal combustion. Inhaltsverzeichnis List of contributors xv Preface xvii 1. Introduction 1 Kevin R. Henke 1.1 Arsenic origin, chemistry, and use 1 1.2 Arsenic environmental impacts 2 1.3 Arsenic toxicity 3 1.4 Arsenic treatment and remediation 3 1.4.1 Introduction 3 1.4.2 Treatment and remediation of water 4 1.4.3 Treatment and remediation of solid wastes, soils, and sediments 4 1.4.4 Treatment of flue gases 5 References 5 2. Arsenic Chemistry 9 Kevin R. Henke and Aaron Hutchison 2.1 Introduction 9 2.2 Atomic structure and isotopes of arsenic 9 2.3 Arsenic valence state and bonding 10 2.4 Chemistry of arsenic solids 13 2.4.1 Elemental arsenic 13 2.4.2 Common arsenic minerals and other solid arsenic compounds 15 2.4.3 Arsine and other volatile arsenic compounds 24 2.4.4 Organoarsenicals 24 2.5 Introduction to arsenic oxidation and reduction 26 2.5.1 Arsenic oxidation 26 2.5.2 Arsenic reduction 27 2.6 Introduction to arsenic methylation and demethylation 28 2.7 Arsenic in water 30 2.7.1 Introduction 30 2.7.2 Aqueous solubility of arsenic compounds and thermodynamics 31 2.7.3 Dissolved arsenic species 40 2.7.4 Dissociation of arsenious and arsenic acids 42 2.7.5 Eh-pH diagrams, and their limitations 45 2.7.6 Sorption, ion exchange, precipitation, and coprecipitation of arsenic in ...
