Metal Biogeochemistry In Surface Water Systems

This book provides a detailed examination of the concentration, form and cycling of trace metals and metalloids through the aquatic biosphere, and has sections dealing with the atmosphere, the ocean, lakes and rivers. It discusses exchanges at the water interface (air/water and sediment/water) and the major drivers of the cycling, concentration and form of trace metals in aquatic systems. The initial chapters focus on the fundamental principles and modelling approaches needed to understand metal concentration, speciation and fate in the aquatic environment, while the later chapters focus on specific environments, with case studies and research highlights. Specific examples deal with metals that are of particular scientific interest, such as mercury, iron, arsenic and zinc, and the book deals with both pollutant and required (nutrient) metals and metalloids. The underlying chemical principles controlling toxicity and bioavailability of these elements to microorganisms and to the aquatic food chain are also discussed. Readership: Graduate students studying environmental chemistry and related topics, as well as scientists and managers interested in the cycling of trace substances in aqueous systems Additional resources for this book can be found at: www.wiley.com/go/mason/tracemetals.

Metals in Water: Global Sources, Significance, and Treatment covers metal pollution in water, where they come from, their effects, and remediation processes. Sections overview heavy metals pollution, including their global health impacts and remediation measures. Geogenic and anthropogenic input of heavy metals in water are described, along with global case studies, step-by-step methods on remediation techniques, different detection sensors, and assessment practices of toxicity of heavy metals. The book focuses on recent research surrounding heavy metals' contamination in water resources and its impact across the globe. Chapters incorporate both theoretical and practical aspects and serve as baseline information for water resources studies. This book is useful for postgraduate students, teachers and researchers working in areas of water resources and pollution, hydrochemistry, environmental remediation and toxicology who are looking to understand the affects metals have on water, the environment and health, and also those looking for methods for remediation. Presents global case studies of sites contaminated by metals, effects on the environment, and successful remediation techniques Includes a whole section on remedial measures, with clear step-by-step "how to" guides Provides chapters covering detailed biogeochemical processes

Metal contamination is an increasing ecological and eco-toxicological risk. Understanding the processes involved in metal mobilization, sorption and mineralization in soils are key features for soil bioremediation. Following an introduction to the physical, chemical and biological components of contaminated soils, various chapters address the interactions of soil, microorganisms, plants and the water phase necessary to transfer metals into biological systems. These include topics such as potential hazards at mining sites; rare earth elements in biotic and abiotic acidic systems; manganese redox reactions; biomineralisation, uranium in seepage water; metal-resistant streptomycetes; mycorrhiza in re-forestation; metal (hyper)accummulation in plants; microbial metal uptake; and their potential for bioremediation. This book will be of interest to soil biologists, geologists and chemists, researchers and graduate students, as well as consulting companies and small enterprises involved in bioremediation.

Humic substances occur in all kinds of aquatic systems, but are particularly important in northern, coniferous areas. They strongly modify the aquatic ecosystems and also constitute a major problem in the drinking water supply. This volume covers all aspects of aquatic humic substances, from their origin and chemical properties, their effects on light and nutrient regimes and biogeochemical cycling, to their role regarding organisms, productivity and food web organization from bacteria to fish. Special emphasis is paid to carbon cycling and food web organization in humic lakes, but aspects of marine carbon cycling related to humus are treated as well.