Search results for: selenium-contamination-in-water

Selenium Contamination in Water

Author : Pooja Devi
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The contamination of environment and water resources by Selenium (Se) and its oxyanions from various sources are emerging contaminants of significant health and environmental concern. The primary sources include agricultural drainage water, mine drainage, residues from fossil fuels, thermoelectric power plants, oil refineries, and metal ores. Various methods and technologies have been developed which focus on the treatment of selenium-containing waters and wastewater. High concentrations of selenium in water cause various adverse impact to human health, such as carcinogenic, genotoxic, and cytotoxic effects. But in the lower concentrations, it is a useful constituent of the biological system. The range between toxicity and deficiency of selenium is minimal (40 to 400 μg per day), due to its dual nature. Selenium Contamination in Water contains the latest status and information on selenium’s origin, its chemistry and its toxicity to humans. The book represents a comprehensive and advanced reference book for students, researchers, practitioners, and policymakers in working in the field of metalloids, in particular selenium. A special emphasis is given on its geological distribution, monitoring techniques, and remedial technologies. As such, the authors critically analyze the various techniques used for the monitoring and removal of selenium from water. Featuring chapters arranged according to the major themes of the latest research, with specific case-studies from industrial experiences of selenium detection and removal, Selenium Contamination in Water will be particularly valued by researchers, practitioners, and policymakers in working in the field of metalloids including selenium.

Areas Susceptible to Irrigation induced Selenium Contamination of Water and Biota in the Western United States

Author : R. L. Seiler
File Size : 62.45 MB
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Environmental Technologies to Treat Selenium Pollution

Author : Piet Lens
File Size : 74.7 MB
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Selenium contamination of air, aquatic environments, soils and sediments is a serious environmental concern of increasing importance. Selenium has a paradoxical feature in bringing about health benefits under the prescribed level, but only a few fold increase in its concentration causes deleterious effects to flora and fauna, humans and the environment. Environmental Technologies to Treat Selenium Pollution: principles and engineering: - presents the fundamentals of the biogeochemical selenium cycle and which imbalances in this cycle result in pollution. - overviews chemical and biological technologies for successful treatment of selenium contaminated water, air, soils and sediments. - explores the recovery of value-added products from selenium laden waste streams, including biofortication and selenium based nanoparticles and quantum dots. This book may serve both as an advanced textbook for undergraduate and graduate students majoring in environmental sciences, technology or engineering as well as a handbook for tertiary educators, researchers, professionals and policy makers who conduct research and practices in selenium related fields. It is essential reading for consulting companies when dealing with selenium related environmental (bio)technologies.

Selenium Contamination in Well Water

Author : Anne A. Sturz
File Size : 50.69 MB
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Methods to Identify Areas Susceptible to Irrigation induced Selenium Contamination in the Western United States

Author : R. L. Seiler
File Size : 72.94 MB
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Bioremediation of Selenium Contaminated Wastewater

Author : Eric D van Hullebusch
File Size : 21.55 MB
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This book features the reduction and removal of selenium in wastewater via bioremediation. Arranged over five chapters, this book provides information regarding the interaction between micro-organisms and selenium, and it also explains the biogeochemistry of selenium in engineered ecosystems designed for wastewater treatment. The analytical approaches currently adopted by the scientific community are also described and discussed. Readers will find examples of the biological treatment of selenium contaminated wastewater, and discover a concise overview of selenium removal processes that are currently implemented at lab-scale as well as at industrial scale.

Selenium Assessment in Aquatic Ecosystems

Author : A. Dennis Lemly
File Size : 88.98 MB
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Selenium is a naturally occurring trace element that can become concentrated and released by industrial, agricultural, petrochemical and mining activities. At concentrated levels it is toxic and has polluted ecosystems around the world. This book will serve as a comprehensive practical handbook for everyone dealing with selenium in aquatic environments. It offers field-tested approaches and methods for assessment and water quality management. Using his twenty-year experience, the author discusses the effects of selenium on fish and bird populations and presents guidelines for identifying sources of pollution, interpreting selenium concentrations, assessing hazardous conditions, setting water quality criteria and ecosystem loading limits (TMDLs). He also includes a procedure for setting environmentally safe limits that ensure compliance with EPA regulations. Selenium Assessment in Aquatic Ecosystems will interest field scientists, natural resource managers, risk assessors and environmental planners.

U S Geological Survey Professional Paper

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File Size : 60.52 MB
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Proceedings of Extended Abstracts from the Fourth International Conference on the Biogeochemistry of Trace Elements

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Irrigation induced Contamination of Water Sediment and Biota in the Western United States synthesis of Data from the National Irrigation Water Quality Program

Author : R. L. Seiler
File Size : 60.28 MB
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Fact Sheet

Author :
File Size : 34.16 MB
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U S Geological Survey Circular

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File Size : 69.13 MB
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Water resources Investigations Report

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File Size : 89.69 MB
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Agricultural Drainage Water Contamination in the San Joaquin Valley

Author : Susan A. Klasing
File Size : 46.9 MB
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Application of Partial Fractionation and Speciation Techniques for Predicting Ground Water Contamination by Soil Selenium Movement

Author : Shankar Sharmasarkar
File Size : 47.23 MB
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Water Quality in the Upper Colorado River Basin Colorado 1996 98

Author : Norman E. Spahr
File Size : 62.77 MB
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Bioremediation of Contaminated Soils

Author : Donald L. Wise
File Size : 42.64 MB
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This volume focuses on innovative bioremediation techniques and applications for the cleanup of contaminated media and sites. It includes quantitative and design methods that elucidate the relationships among various operational parameters, and waste chemistry that defines the cost effectiveness of bioremediation projects. It also presents numerical models.

Field Screening of Water Soil Bottom Sediment and Biota Associated with Irrigation Drainage in the Dolores Project and the Mancos River Basin Southwestern Colorado 1994

Author : David Louis Butler
File Size : 34.2 MB
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Emerging Contaminants Vol 2

Author : Nadia Morin-Crini
File Size : 87.89 MB
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Emerging contaminants are chemical and biological agents for which there is growing concern about their potential health and environmental effects. The threat lies in the fact that the sources, fate and toxicology of most of these compounds have not yet been studied. Emerging contaminants, therefore, include a large number of both recently discovered and well-known compounds such as rare earth elements, viruses, bacteria, nanomaterials, microplastics, pharmaceuticals, endocrine disruptors, hormones, personal care products, cosmetics, pesticides, surfactants and industrial chemicals. Emerging contaminants have been found in many daily products, and some of them accumulate in the food chain. Correlations have been observed between aquatic pollution by emerging contaminants and discharges from wastewater treatment plants. Most actual remediation methods are not effective at removing emerging contaminants. This second volume presents comprehensive knowledge on emerging contaminants with a focus on remediation.

San Luis Drainage Feature Re evaluation

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