Описание: Covers the fundamental principles involved in the preparation and characterization of supercritical fluids (SCFs) used in the energy production and other environmental applications. This book features the basics of sub- and supercritical fluids, like thermodynamics of phase and chemical equilibria, mathematical modeling, and process calculations.
Описание: This book provides a complete guide on tools and techniques for modeling of supercritical and subcritical fluid extraction (SSFE) processes and phenomena. It provides details for SSFE from managing the experiments to modeling and optimization. It includes the fundamentals of SSFE as well as the necessary experimental techniques to validate the models. The optimization section includes the use of process simulators, conventional optimization techniques and state-of-the-art genetic algorithm methods. Numerous practical examples and case studies on the application of the modeling and optimization techniques on the SSFE processes are also provided. Detailed thermodynamic modeling with and without co-solvent and non equilibrium system modeling is another feature of the book.
The book consists of seven chapters. Chapter 1 presents an overview of the field of supercritical and subcritical fluid extraction (SSFE) and their importance to food, cosmetic and pharmaceutical industries. Chapter 2 describes the concepts and methodologies for modeling, simulation as well as optimization. It presents conservation laws related to SFE traditional first principle modeling and optimization techniques, statistical modeling as well as advanced artificial intelligence (AI) techniques like genetic algorithm, fuzzy logic and artificial neural network (ANN). The characteristics and physical properties of palm oil as the most referred solute in the book, and descriptions of some existing palm oil industrial processes are presented in Chapter 3. In Chapter 4, the first principle methodology is applied for modeling of properties of palm oil components, mixtures and for the supercritical fluid extraction of palm oil components. Modeling applications involving advanced techniques such as AI, ANN and fuzzy logics and ANFIS are discussed in Chapter 5. Next, Chapter 6 describes experimental design concepts and procedures as well as statistical optimization techniques involving SSFE processes. Finally, optimisation of SSFE using first principle modeling and other advanced techniques are presented in Chapter 7.
Описание: This book details progress in use of supercritical water (SCW) to synthesize nano- and micro- oxides, inorganic salts and metal particles, and shows how polymer/biomass particles can be produced by the precipitation of solutes from SCW.
Автор: E.D. Ramsey Название: Analytical Supercritical Fluid Extraction Techniques ISBN: 9401060762 ISBN-13(EAN): 9789401060769 Издательство: Springer Рейтинг: Цена: 28734.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: During the past decade supercritical fluid extration (SFE) has attracted considerable attention as a sample preparation procedure in analytical chemistry.
Автор: Maria D. Luque de Castro; Miguel Valcarcel; Maria Название: Analytical Supercritical Fluid Extraction ISBN: 3642786758 ISBN-13(EAN): 9783642786754 Издательство: Springer Рейтинг: Цена: 6986.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: 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.
Автор: S. S. H. Rizvi Название: Supercritical Fluid Processing of Food and Biomaterials ISBN: 1461359074 ISBN-13(EAN): 9781461359074 Издательство: Springer Рейтинг: Цена: 13060.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The need for understanding the fundamentals of supercritical fluid processing and their applications to ever-widening ranges of materials and conditions continues to expand.
Автор: Syed S.H. Rizvi Название: Supercritical Fluid Processing of Food and Biomaterials ISBN: 0834213567 ISBN-13(EAN): 9780834213562 Издательство: Springer Рейтинг: Цена: 19591.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The use of supercritical fluids in analytical chemistry is still grow- ing. 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.
Enzymes are currently used in various industries, most commonly in food, detergents, and pharmaceuticals production. Lipases are hydrolytic enzymes that demonstrate great potential as an alternative to conventional catalysts in a number of industrial applications. A complete understanding of enzymes, and their proteins structure and environmental behavior, can greatly aid in the further development of industrial applications. Supercritical Fluids Technology in Lipase Catalized Processes provides basic information about enzymes, their sources, reaction kinetics, and main industrial applications. The book focuses in lipases. their main sources, structure, and features, with an emphasis on their specificity and interfacial activity, and presents proven techniques for isolating, extracting, and purifying.
Comprised of six compact chapters, this comprehensive guide introduces:
Immobilization techniques and immobilized lipases that allow repeated use (which is essential from an economic point of view)
Different bioreactor configurations using immobilized lipases
The latest information on the available technologies in lipolytic reactions
The advantages of nonaqueous media in biochemical synthesis over aqueous and solvent-free systems
Material on the use of lipases in nonaqueous media to overcome the drawbacks usually encountered with the use of conventional chemical catalysts
The use of supercritical fluids (SCFs) as a green alternative reaction medium
Factors affecting the physical properties of lipases in this medium and, hence, their activity and stability
A case study using supercritical carbon dioxide (SC-CO2) for biodiesel production
Novel, cutting-edge technology, using immobilized enzymes to reduce the overall production cost
Supercritical Fluids Technology in Lipase Catalized Processes outlines the main industrial applications of common enzymes and discusses relevant challenges and innovations emerging in the field.
ООО "Логосфера " Тел:+7(495) 980-12-10 www.logobook.ru
