Applications Of Supercritical Fluids In Industrial Analysis
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Applications Of Supercritical Fluids In Industrial Analysis
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Author : J.R. Dean
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Applications Of Supercritical Fluids In Industrial Analysis written by J.R. Dean and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
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.
Applications Of Supercritical Fluids In Industrial Analysis
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Author : J R Dean
language : en
Publisher:
Release Date : 1993-08-31
Applications Of Supercritical Fluids In Industrial Analysis written by J R Dean and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-08-31 with categories.
This volume concentrates on applications of supercritical fluids in the major industrial sectors: polymer analysis, environmental chemistry, pharmaceutical chemistry and food technology. An introduction to supercritical fluids is followed by chapters on the instrumentation available for supercritical fluid extraction and supercritical fluid chromatography.
Applications Of Supercritical Fluids In Industrial Analysis
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Author : John R. Dean
language : en
Publisher: Springer Science & Business Media
Release Date : 1993
Applications Of Supercritical Fluids In Industrial Analysis written by John R. Dean and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Science categories.
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 chromatography 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 (310C), inertness, purity, non-toxicity and cheapness.
Supercritical Fluids
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Author : E. Kiran
language : en
Publisher: Springer
Release Date : 2014-10-09
Supercritical Fluids written by E. Kiran and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-09 with Science categories.
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.
Fundamentals And Applications Of Supercritical Carbon Dioxide Sco2 Based Power Cycles
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Author : Klaus Brun
language : en
Publisher: Woodhead Publishing
Release Date : 2017-01-09
Fundamentals And Applications Of Supercritical Carbon Dioxide Sco2 Based Power Cycles written by Klaus Brun and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-09 with Technology & Engineering categories.
Fundamentals and Applications of Supercritical Carbon Dioxide (SCO2) Based Power Cycles aims to provide engineers and researchers with an authoritative overview of research and technology in this area. Part One introduces the technology and reviews the properties of SCO2 relevant to power cycles. Other sections of the book address components for SCO2 power cycles, such as turbomachinery expanders, compressors, recuperators, and design challenges, such as the need for high-temperature materials. Chapters on key applications, including waste heat, nuclear power, fossil energy, geothermal and concentrated solar power are also included. The final section addresses major international research programs. Readers will learn about the attractive features of SC02 power cycles, which include a lower capital cost potential than the traditional cycle, and the compounding performance benefits from a more efficient thermodynamic cycle on balance of plant requirements, fuel use, and emissions. - Represents the first book to focus exclusively on SC02 power cycles - Contains detailed coverage of cycle fundamentals, key components, and design challenges - Addresses the wide range of applications of SC02 power cycles, from more efficient electricity generation, to ship propulsion
Analytical Supercritical Fluid Extraction
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Author : Maria D. Luque de Castro
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Analytical Supercritical Fluid Extraction written by Maria D. Luque de Castro and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Recent advances in analytical chemistry have turned it into a virtually unrecognizable science compared to a few decades ago, when it lagged behind other sciences and techniques. However, advances in analytical science have been far from universal: while innovations in instrumentation and data acquisition and processing systems have reached unprecedented levels thanks to parallel breakthroughs in computer science and chemo metrics, progress in preliminary operations has been much slower despite their importance to analytical results. Thus, such clear trends in analytical process development as automation and miniaturization have not reached preliminary operations to the same extent, even though this area is pro bably in the greatest need. Improvement in preliminary operations is thus an urgent goal of analytical chemistry on the verge of the twenty first century. Increased R&D endeavours and manufacture of commercially available automatic equipment for implementation of the wide variety of operations that separate the uncollected, unmeasured, untreated sample from the signal measuring step are thus crucial on account of the wide variability of such operations, which precludes development of all-purpose equipment, and the complexity of some, particularly relating to solid samples. Supercritical fluid extraction opens up interesting prospects in this context and is no doubt an effective approach to automatioI1 and mini aturization in the preliminary steps of the analytical process. The dramatic developments achieved in its short life are atypical in many respects.
Supercritical Fluid Extraction Of Nutraceuticals And Bioactive Compounds
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Author : Jose L. Martinez
language : en
Publisher: CRC Press
Release Date : 2007-11-28
Supercritical Fluid Extraction Of Nutraceuticals And Bioactive Compounds written by Jose L. Martinez and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-28 with Science categories.
Enhanced concern for the quality and safety of food products, increased preference for natural products, and stricter regulations on the residual level of solvents, all contribute to the growing use of supercritical fluid technology as a primary alternative for the extraction, fractionation, and isolation of active ingredients. As a solvent-free p
Natural Bioactive Compounds
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Author : Rajeshwar P. Sinha
language : en
Publisher: Academic Press
Release Date : 2020-10-06
Natural Bioactive Compounds written by Rajeshwar P. Sinha and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-06 with Science categories.
Natural Bioactive Compounds: Technological Advancements deals with the latest breakthroughs in the field of screening, characterization and novel applications of natural bioactive compounds from diverse group of organisms ranging from bacteria, viruses, cyanobacteria, algae, fungi, bryophytes, higher plants, sponges, corals and fishes. Written by some of the most reputed scientists in the field, this book introduces the reader to strategies and methods in the search for bioactive natural products. It is an essential read for researchers and students interested in bioactive natural products, their biological and pharmacological properties, their possible use as chemopreventive or chemotherapeutic agents, and other future potential applications. - Explores natural sources of bioactive compounds, including cyanobacteria, bacteria, viruses, fungi and higher plants - Discusses the potential applications of biological products, such as their use in medicine (antibiotics, cancer research, immunology), as food additives, supplements and technological substances - Analyzes the contributions of emerging or developing technologies for the study of bioactive natural compounds (characterization and purification)
Supercritical Fluid Technology For Drug Product Development
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Author : Peter York
language : en
Publisher: CRC Press
Release Date : 2004-03-23
Supercritical Fluid Technology For Drug Product Development written by Peter York and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-03-23 with Medical categories.
Interconnecting the fundamentals of supercritical fluid (SCF) technologies, their current and anticipated utility in drug delivery, and process engineering advances from related methodological domains and pharmaceutical applications, this volume unlocks the potential of supercritical fluids to further the development of improved pharmaceutical prod
Extraction Of Natural Products Using Near Critical Solvents
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Author : M.B. King
language : en
Publisher: Springer Science & Business Media
Release Date : 1992-12-31
Extraction Of Natural Products Using Near Critical Solvents written by M.B. King and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-12-31 with Science categories.
The aim of this book is to present the current state of the art of extracting natural products with near-critical solvents and to view the possibilities of further extensions of the technique. Relevant background theory is given but does not dominate the book. Carbon dioxide is the near-critical solvent used in most recent applications and inevitably receives prominence. In addition to general descriptions and reviews, the book contains three chapters by indus trial practitioners who describe in detail the operation of their processes and discuss the market for their products. Sections on the design of the pressure vessels and pumps required in these processes and on the acquisition of the data required for design are included. The costing of the processes is also discussed. There is good scope for combining a near-critical extraction step with other process steps in which the properties of near-critical solvents are utilised, for example as a reaction or crystallisation medium and a chapter is devoted to these important aspects. It is hoped that the work will be found to contain a great deal of specific information of use to those already familiar with this field. However the style of presentation and content is such that it will also be useful as an introduction. In particular it will be helpful to those wondering if this form of separation method has anything to offer for them, whether they are engineers, chemists or managers in industry, or in academic or research institutions.