Application of Hydrodynamic Cavitation in Environmental Engineering

Author: Janusz Ozonek
Publisher: CRC Press
ISBN: 0415616263
Format: PDF, Docs
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Containing the state-of-the-art in hydrodynamic cavitation, the book consists of two parts. The first part presents the physical basis of cavitation and a systematic classification of various kinds of cavitation and their formation sources. Special attention is paid to a group of factors that promote cavitation formation in natural liquids. A general model of cavitation is formulated as well as a sub-model describing dynamics of the formation, development and collapse of cavitation bubbles. The sub-model also includes effects of cavitation bubble occurrence on the liquid in the direct vicinity of bubbles. Finally, part one also includes a thermodynamic hydrocavitation model of water containing cavitation nuclei (natural waters). The second part deals with the application of hydrodynamic cavitation effects to advanced oxidation of substances that pollute the natural environment. Results of laboratory experiments on the application of cavitation effects to decompose selected organic compounds which hardly undergo biodegradation are presented, as well as a concept of the cavitation phenomenon application on an industrial scale. Application of Hydrodynamic Cavitation in Environmental Engineering will be useful to professionals dealing with the design and practical application of hydrocavitation reactors, and to academics in environmental engineering.

Environmental Engineering III

Author: Lucjan Pawlowski
Publisher: CRC Press
ISBN: 0203846664
Format: PDF, Kindle
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Environmental engineering has a leading role in the elimination of ecological threats, and can deal with a wide range of technical and technological problems due to its interdisciplinary character. It uses the knowledge of the basic sciences – biology, chemistry, biochemistry and physics – to neutralize pollution in all the elements of the environment, i.e. the hydrosphere, atmosphere and lithosphere. Mainly, environmental engineering deals with the design and maintenance of systems of water supply, sewage disposal, heating, ventilation and air-conditioning in buildings. In brief, it deals with securing technically, the conditions which create a safe environment for mankind to live in. The three main goals of Environmental Engineering III are to assess the state of scientific research in various areas of environmental engineering; to evaluate organizational, technical, and technological progress in contributing to ecological security; and to determine the place of environmental engineering in sustainable development, taking into account current political and economic conditions. The contributions are divided into eight sections: General problems Air pollution control Indoor air pollution control Neutralization of sewage sludge and wastewater Neutralization of solid wastes and sludges Remediation of polluted sites Water quality and supply Energy saving and recovery Environmental Engineering III contains 88 selected and peer reviewed papers from 327 contributions presented during the 3rd Congress of Environmental Engineering, and is a valuable sources of information for academics and engineers in environmental engineering.

Processing and Sustainability of Beverages

Author: Alexandru Grumezescu
Publisher: Woodhead Publishing
ISBN: 0128156996
Format: PDF, Docs
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Processing and Sustainability of Beverages, Volume Two in the Science of Beverages series, is a general reference of the current and future actions for a sustainable beverage industry. This resource takes a unique approach, combining processing with sustainability. Topics of note include waste treatment and management, environmental analysis for a sustainable beverage industry, and modern technologies for beverage processing to reduce contaminants and increase the quality. This book is essential to scientists, researchers and technologists in the beverages field, covering both alcoholic and nonalcoholic beverages. Covers a broad range of beverage products to increase knowledge of quality improvement and product development Presents novel food processing technologies on beverage antioxidants Offers sustainable management strategies for implementing added value in beverage products

Environmental Engineering V

Author: Malgorzata Pawlowska
Publisher: CRC Press
ISBN: 1315281961
Format: PDF, ePub, Docs
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Poland, like other post-communist countries, is undergoing a transformation into a capitalist system. This transformation affects the country in many ways: economic, social, psychological and also ecological. Ecological problems are strongly connected with the political, economic and psychological inheritance of the past, as well as with changes in the post-communist society. In order to understand these problems, it is necessary to consider the following issues: - the geographic situation of Poland - the political transformations that occurred after World War II – forced development of heavy industry combined with neglect of its effects on the environment, and - the economic problems The three main goals of Environmental Engineering V are (I) to assess the state of scientific research in various areas of environmental engineering. (II) to evaluate organizational, technical and technological progress in contributing to ecological security, and (III) to determine the place of environmental engineering in sustainable development, taking into account political and economic conditions. Environmental Engineering V is of interest for academics, engineers and professionals involved in environmental engineering, seeking solutions for environmental problems in emerging new democracies, especially those who plan to participate in numerous projects sponsored by the European Union.

Cavitation

Author: Sivakumar Manickam
Publisher: CRC Press
ISBN: 9814411558
Format: PDF, Mobi
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As nanomaterials and their end products occupy the pinnacle position of consumer markets, it becomes vital to analyze their generation processes. One of the green chemistry principles underlines the need for unusual energy sources to generate them. Utilizing the extreme energy from the collapse of cavitation bubbles, generated by either ultrasound or hydrodynamic forces, for the generation of nanomaterials is a merit to consider in this "Green Chemical Processing Era." A wide range of nanomaterials have been developed in the past decade using cavitation or coupling cavitation with other techniques such as microwave, photochemistry, and electrochemistry, resulting in nanomaterials with unique morphologies, reduced size, narrow size distribution, and innumerous advantages. While a few currently available books deal with the fundamental aspects of cavitation and sonochemistry, this book is devoted specifically to the technologically important nanomaterials obtained by cavitation.

MES 24 Electrochemical Applications to Biology Nanotechnology and Environmental Engineering and Materials

Author: Manuel Eduardo Palomar Pardavé
Publisher: The Electrochemical Society
ISBN: 1566777763
Format: PDF, ePub, Docs
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This issue of ECS Transactions (ECST) comprises a selection of papers presented at the 24th national meeting of the Mexican Electrochemical Society (MES) and the second meeting of the Mexican Section of The Electrochemical Society (ECS), carried out in Puerto Vallarta, Jalisco, from May 31 to June 5, 2009.

Cavitation Reaction Engineering

Author: Y.T. Shah
Publisher: Springer Science & Business Media
ISBN: 1461547873
Format: PDF, Docs
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The literature on cavitation chemistry is ripe with conjectures, possibilities, heuris tic arguments, and intelligent guesses. The chemical effects of cavitation have been explained by means of many theories, consisting of empirical constants, adjustable parameters, and the like. The chemists working with cavitation chemistry agree that the phenomenon is very complex and system specific. Mathematicians and physi cists have offered partial solutions to the observed phenomena on the basis of cavitation parameters, whereas chemists have attempted explanations based on the modes of reaction and the detection of intermediate chemical species. Nevertheless, no one has been able to formulate a unified theme, however crude, for its effects on the basis of the known parameters, such as cavitation and transient chemistry involving extremely high temperatures of nanosecond durations. When one surveys the literature on cavitation-assisted reactions, it is clear that the approach so far has been "Edisonian" in nature. While a large number of reactions have showed either enhanced yields or reduced reaction times, many reactions have remained unaffected in the presence of cavitation. The success or failure of cavitation reactions ultimately depends on the collapse of the cavity. Cavitation chemistry is based on the principles of the formation of small transient cavities, their growth and implosion, which produce chemical reactions caused by the generation of extreme pressures and temperatures and a high degree of micro turbulence.