Hazardous materials are any substance which have the potential to cause harm to humans, animals or the environment through direct or indirect interaction. In this book, the authors gather topical research in the study of the types, risks and control of hazardous materials, from across the globe. Topics discussed include antibiotics as environmental contaminants; controlling inorganic and organic contaminants in wastewater; hazardous metal sources and toxicity; surfactant removal in wastewater treatment; fly ash management; a chemical study of sewage sludge from a two phase anaerobic digestion plant and the complete oxidation of volatile organic compounds at moderate temperatures.