David L. Sedlak's Books

Assessing Methods of Removing Metals from Wastewater: The Effect of Ferric Chloride Addition

By: David L. Sedlak

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Assessing Methods of Removing Metals from Wastewater: The Effect of Ferric Chloride Addition

By: David L. Sedlak

The presence of cationic pollutant metals in municipal wastewater effluent is a concern because stringent discharge requirements cannot always be met with conventional treatment methods. Attempts to improve metal removal are often unsuccessful because a significant fraction of the cationic metals are complexed by the synthetic chelating agent ethylenediamine tetraacetic acid (EDTA). To identify practical approaches for improving metal removal, an analytical method for measuring metal-EDTA complexes was used to survey metal speciation at a series of wastewater treatment plants. Following these analyses, bench-scale experiments were conducted. The survey data indicated that pollutant metal-EDTA complexes account for a significant fraction of the dissolved metals in wastewater. The bench-scale studies indicated that ferric chloride addition improves the removal of copper and zinc by approximately 20%. To test the results of the bench-scale experiments, a full-scale experiment was conducted by interrupting chemical addition at a municipal wastewater treatment plant that normally adds ferric chloride during primary treatment. Results indicated that ferric chloride addition had a slight impact on metal speciation but no effect on metals removal. The lack of an effect was attributed to changes in metal speciation that occurred during primary treatment irrespective of ferric chloride addition.

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IWA Publishing

Published Date

ISBN 10

1843396947

ISBN 13

9781843396949

Occurrence Survey of Pharmaceutically Active Compounds

By: David L. Sedlak,Karen Pinkston,Ching-Hua Huang

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Occurrence Survey of Pharmaceutically Active Compounds

By: David L. Sedlak,Karen Pinkston,Ching-Hua Huang

This study evaluated the available information on the use, occurrence and analysis of PhACs in US water sources. It selected PhACs that are likely to be present at detectable concentrations in municipal wastewater effluent and agricultural runoff then developed simple analytical methods for quantifying these PhACs. With this and the samples attained, preliminary assessment of the ability of wastewater treatment plants, engineered treatment wetlands and soil aquifer treatment systems to remove PhACs was determined and discussed. Since PhACs have been confirmed as present in drinking water sources, additional research is recommended.

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104

Publisher

American Water Works Association

Published Date

ISBN 10

1583213708

ISBN 13

9781583213704

RNA Interference

By: David R. Engelke,John J. Rossi

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RNA Interference

By: David R. Engelke,John J. Rossi

The critically acclaimed laboratory standard, Methods in Enzymology, is one of the most highly respected publications in the field of biochemistry. Since 1955, each volume has been eagerly awaited, frequently consulted, and praised by researchers and reviewers alike. The series contains much material still relevant today - truly an essential publication for researchers in all fields of life sciences.RNA Interference will cover RNAi in non-vertebrates (plants, C. elegans, drosophila, and S. pombe), and Mammalian systems (human and non-human cells). This volume discusses extensive methodology related to delivery methods high throughput strategies and prospects as a human therapy agent.* One of the most highly respected publications in the field of biochemistry since 1955 * Frequently consulted, and praised by researchers and reviewers alike * Truly an essential publication for anyone in any field of the life sciences

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Page Count

487

Publisher

Elsevier

Published Date

ISBN 10

0080455395

ISBN 13

9780080455396

The Governance of Water Innovations

To Quench a Thirst

By: Feldman, David L.

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The Governance of Water Innovations

To Quench a Thirst

By: Feldman, David L.

Providing an extensive comparative and international study of water innovations and the issues that arise in their implementation, The Governance of Water Innovations analyses the technical, economic, health and environmental impacts of water innovations and their policy implications.

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Page Count

209

Publisher

Edward Elgar Publishing

Published Date

ISBN 10

180088205X

ISBN 13

9781800882058

Water for All

Global Solutions for a Changing Climate

By: David Sedlak

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Water for All

Global Solutions for a Changing Climate

By: David Sedlak

A fresh look at the world's water crises, and the existing and emerging solutions that can be used to solve them It is not your imagination: water crises are more frequent. Our twentieth-century systems for providing the water that grows food, sustains cities, and supports healthy ecosystems are failing to meet the demands of growing population and the challenges brought on by climate change. But the grim news reports--of empty reservoirs, withering crops, failing ecosystems--need not be cause for despair, argues award-winning author David Sedlak. Communities on the front lines of previous water crises have pioneered approaches that are ready to be applied elsewhere. Some have resolved shortages by enhancing water-use efficiency, and others have used moments of crisis to resolve historic disagreements over water rights. Still others have employed treatment technologies that unlock vast quantities of untapped water resources. Sedlak identifies the challenges that society faces, including ineffective policies and outdated infrastructure, and the myriad of tools at our disposal--from emerging technologies in desalination to innovations for recycling wastewater and capturing more of the water that falls on fields and cities. He offers an informed and hopeful approach for rethinking our assumptions about the way that water is managed. With this knowledge we can create a future with clean, abundant, and affordable water for all.

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Page Count

441

Publisher

Yale University Press

Published Date

ISBN 10

0300256930

ISBN 13

9780300256932

Book's by David L. Sedlak

Assessing Methods of Removing Metals from Wastewater: The Effect of Ferric Chloride Addition

Assessing Methods of Removing Metals from Wastewater: The Effect of Ferric Chloride Addition

Occurrence Survey of Pharmaceutically Active Compounds

Occurrence Survey of Pharmaceutically Active Compounds

RNA Interference

RNA Interference

The Governance of Water Innovations

The Governance of Water Innovations

Water for All

Water for All

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