Introduction To Supercritical Fluids

Author : E. Kiran
Publisher : Springer Science & Business Media
ISBN 13 : 9401139296
Total Pages : 602 pages
Book Rating : 4.98/5 ( download)

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Download or read book Supercritical Fluids written by E. Kiran and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercritical fluids are neither gas nor liquid, but can be compressed gradually from low to high density and they are therefore interesting and important as tunable solvents and reaction media in the chemical process industry. By adjusting the density the properties of these fluids can be customised and manipulated for a given process - physical or chemical transformation. Separation and processing using supercritical solvents such as CO2 are currently on-line commercially in the food, essential oils and polymer industries. Many agencies and industries are considering the use of supercritical water for waste remediation. Supercritical fluid chromatography represents another, major analytical application. Significant advances have recently been made in materials processing, ranging from particle formation to the creation of porous materials. The chapters in this book provide tutorial accounts of topical areas centred around: (1) phase equilibria, thermodynamics and equations of state; (2) critical behaviour, crossover effects; (3) transport and interfacial properties; (4) molecular modelling, computer simulation; (5) reactions, spectroscopy; (6) phase separation kinetics; (7) extractions; (8) applications to polymers, pharmaceuticals, natural materials and chromatography; (9) process scale-up.

Author : Richard Smith
Publisher : Newnes
ISBN 13 : 0080931308
Total Pages : 764 pages
Book Rating : 4.02/5 ( download)

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Download or read book Introduction to Supercritical Fluids written by Richard Smith and published by Newnes. This book was released on 2013-12-08 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text provides an introduction to supercritical fluids with easy-to-use Excel spreadsheets suitable for both specialized-discipline (chemistry or chemical engineering student) and mixed-discipline (engineering/economic student) classes. Each chapter contains worked examples, tip boxes and end-of-the-chapter problems and projects. Part I covers web-based chemical information resources, applications and simplified theory presented in a way that allows students of all disciplines to delve into the properties of supercritical fluids and to design energy, extraction and materials formation systems for real-world processes that use supercritical water or supercritical carbon dioxide. Part II takes a practical approach and addresses the thermodynamic framework, equations of state, fluid phase equilibria, heat and mass transfer, chemical equilibria and reaction kinetics of supercritical fluids. Spreadsheets are arranged as Visual Basic for Applications (VBA) functions and macros that are completely (source code) accessible for students who have interest in developing their own programs. Programming is not required to solve problems or to complete projects in the text. Property worksheets/spreadsheets that are easy to use in learning environments Worked examples with Excel VBA Worksheet functions allow users to design their own processes Fluid phase equilibria and chemical equilibria worksheets allow users to change conditions, study new solutes, co-solvents, chemical systems or reactions

Author : Gerd Brunner
Publisher : Springer Science & Business Media
ISBN 13 : 3662073803
Total Pages : 396 pages
Book Rating : 4.03/5 ( download)

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Download or read book Gas Extraction written by Gerd Brunner and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application of compressed gases as solvents has found widespread interest within the scientific community. Its processes have industrial applications. Gas Extraction deals with the possibilities of supercritical gases as solvents for separation processes. The volume combines physico-chemical aspects with chemical engineering methods. The text generalizes as far as possible, and treats examples in detail. Gas Extraction covers, for the first time, the subject in textbook form. Most of the examples provide new results that will be helpful for practicing scientists, engineers, and students who want to make use of the techniques.

Author : John R. Williams
Publisher : Springer Science & Business Media
ISBN 13 : 1592590306
Total Pages : 253 pages
Book Rating : 4.08/5 ( download)

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Download or read book Supercritical Fluid Methods and Protocols written by John R. Williams and published by Springer Science & Business Media. This book was released on 2008-02-05 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last 15 years, there has been renewed interest in supercritical fluids owing to their unique properties and relatively low environmental impact. Greatest attention has been given to the extraction and separation of organic compounds. Supercritical fluids have also been successfully used for particle production, as reaction media, and for the destruction of toxic waste. Supercritical carbon dioxide has been the most widely used supercritical fluid, mainly because it is cheap, relatively nontoxic, and has convenient critical values. Supercritical fluids have also been used on analytical and preparative scales for many biological and other applications. Many papers have been published on the use of supercritical fluids. However, few have acted as a detailed instruction manual for those wanting to use the techniques for the first time. We anticipate that this Methods in Biotechnology volume, Supercritical Fluid Methods and Protocols will s- isfy the need for such a book. Every chapter has been written by experienced workers and should, if closely followed, enable workers with some or no previous experience of supercritical fluids to conduct experiments successfully at the first attempt.

Author : Mark A. McHugh
Publisher : Butterworth-Heinemann
ISBN 13 :
Total Pages : 528 pages
Book Rating : 4.98/5 ( download)

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Download or read book Supercritical Fluid Extraction written by Mark A. McHugh and published by Butterworth-Heinemann. This book was released on 1986 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercritical Fluid Extraction is a technique in which CO2 is used under extremely high pressure to separate solutions. Separations is basic to all process industries & supercritical fluid extraction is a specific type which is receiving a high level of attention, The book will combine basic fundamentals with industrial applications.

Author : E. Kiran
Publisher : Springer Science & Business Media
ISBN 13 : 9401582955
Total Pages : 775 pages
Book Rating : 4.57/5 ( download)

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Download or read book Supercritical Fluids written by E. Kiran and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 775 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercritical fluids which are neither gas nor liquid, but can be compressed gradually from low to high density, are gaining increasing importance as tunable solvents and reaction media in the chemical process industry. By adjusting the pressure, or more strictly the density, the properties of these fluids are customized and manipulated for the particular process at hand, be it a physical transformation, such as separation or solvation, or a chemical transformation, such as a reaction or reactive extraction. Supercritical fluids, however, differ from both gases and liquids in many respects. In order to properly understand and describe their properties, it is necessary to know the implications of their nearness to criticality, to be aware of the complex types of phase separation (including solid phases) that occur when the components of the fluid mixture are very different from each other, and to develop theories that can cope with the large differences in molecular size and shape of the supercritical solvent and the solutes that are present.

Author : Bernd Wenclawiak
Publisher : Springer Science & Business Media
ISBN 13 : 3642774741
Total Pages : 225 pages
Book Rating : 4.44/5 ( download)

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Download or read book Analysis with Supercritical Fluids: Extraction and Chromatography written by Bernd Wenclawiak and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of supercritical fluids in analytical chemistry is still grow ing. More and more analysts are discovering the favorable advan tages for a number of applications. Especially supercritical fluid extraction (SFE) has attracted a lot of interest in recent years due to its simplicity. Supercritical fluid chromatography (SFC) has become better established and the development of this technique has been accelerated by the many applications with capillary col umns which have been published in the literature. At first SFC equipment was based on instruments commonly used for liquid chromatography, and the first commercial in struments were derived from this technology. However, capillary columns can be much more easily interfaced to gas chromatogra phy equipment especially to the detectors commonly used for Oc. Many stationary phases both for packed micro columns and capillary columns have been designed for SFC purposes extending this technology to LC and OC. The most common fluid applied in SFC and SFE is carbon dioxide. The advantages of supercritical CO , such as having dif 2 fusivity like a gas and solvating power depending on temperature and pressure, are also valid for other fluids and modified fluids. Both properties are valuable for sample extraction and extraction selectivity.

Author : Richard Smith
Publisher : Elsevier Inc. Chapters
ISBN 13 : 0128076895
Total Pages : 752 pages
Book Rating : 4.97/5 ( download)

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Download or read book Introduction to Supercritical Fluids written by Richard Smith and published by Elsevier Inc. Chapters. This book was released on 2013-12-08 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : J.R. Dean
Publisher : Springer Science & Business Media
ISBN 13 : 940112146X
Total Pages : 238 pages
Book Rating : 4.60/5 ( download)

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Download or read book Applications of Supercritical Fluids in Industrial Analysis written by J.R. Dean and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continued search for rapid, efficient and cost-effective means of analytical measurement has introduced supercritical fluids into the field of analytical chemistry. Two areas are common: supercritical fluid chroma tography and supercritical fluid extraction. Both seek to exploit the unique properties of a gas at temperatures and pressures above the critical point. The most common supercritical fluid is carbon dioxide, employed because of its low critical temperature (31 °C), inertness, purity, non-toxicity and cheapness. Alternative supercritical fluids are also used and often in conjunction with modifiers. The combined gas-like mass transfer and liquid-like solvating characteristics have been used for improved chroma tographic separation and faster sample preparation. Supercritical fluid chromatography (SFC) is complementary to gas chro matography ( GC) and high performance liquid chromatography (HPLC), providing higher efficiency than HPLC, together with the ability to analyse thermally labile and high molecular weight analytes. Both packed and open tubular columns can be employed, providing the capability to analyse a wide range of sample types. In addition, flame ionization detection can be used, thus providing 'universal' detection.

Author : Richard Smith
Publisher : Elsevier Inc. Chapters
ISBN 13 : 012807695X
Total Pages : 752 pages
Book Rating : 4.58/5 ( download)

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Download or read book Introduction to Supercritical Fluids written by Richard Smith and published by Elsevier Inc. Chapters. This book was released on 2013-12-08 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: