Kategoria BISAC: Science >> Chemistry - Industrial & Technical

Membrane Technology - a clean and energy saving alternative to traditional/conventional processes.

Developed from a useful laboratory technique to a commercial separation technology, today it has widespread and rapidly expanding use in the chemical industry. It has established applications in areas such as hydrogen separation and recovery of organic vapors from process gas streams, and selective transport of organic solvents, and it is opening new perspectives for catalytic conversion in membrane reactors. Membrane technology provides a unique solution for industrial waste treatment and...

How to turn ancient knowledge into a blockbuster drug. Throughout time, humans have searched, collected, and effectively used plants for healing. Currently, business in medicinal plants is flourishing, and efforts are being made to transform traditionally used herbs into modern drugs conforming to the high pharmacological standards present-day. To achieve this goal, a number of problems concerning the safety and efficacy of medicinal plant products need to be addressed and solved.

This timely and original handbook paves the way to success, systematically addressing the issues facing...

This book is interdisciplinary in character and combines the knowledge of me chanics and chemical engineering with the aim of presenting a more exhaustive analysis ofthe phenomena occurring in wet materials during drying. Traditionally, the subject of drying has been an almost exclusive domain of chemical engineers. The drying curricula have mostly included only the courses of heat and mass transfer or diffusion. The mechanical phenomena that accompany drying, as for example, warping or deformation of dried materials, or the drying induced stresses and fissures of the material, were ignored...

Frank Handle ] 1.1 What to Expect For some time now, I have been toying around with the idea of writing a book about Ceramic Extrusion, because to my amazement I have been unable to locate a single existing, comprehensive rundown on the subject much in contrast to, say, plastic extrusion and despite the fact that there are some outstanding contributions to be found about certain, individual topics, such as those in textbooks by Reed 1], Krause 2], Bender/Handle ] 3] et al. By way of analogy to Woody Allen s wonderfully ironic movie entitled Eve- thing You Always Wanted to Know about Sex, I...

Economic needs as well as ecological demands are major driving forces in improving chemical processes and plants. To meet these goals processes have to be intensified in order to get products of higher quality, to increase yield by reducing or even suppressing by-products and to minimise energy consumption. A preferred principle for such intensifications is process - tegration, especially integration of reaction and separation operations. S- entific research in this field has been boosted by certain extremely succe- ful examples like the Eastman-Kodak process for methyl acetate or the MTBE...

Membranverfahren sind Ingenieuren und Naturwissenschaftlern langst mehr als nur ein Begriff. Unentbehrlich in Medizin, Wasser- und Lebensmitteltechnik, mit hohen Wachstumsraten im Umweltschutz und der Chemie gehoren sie zu den Schlusseltechnologien des 21. Jahrhunderts. Ging es aber um eine konkrete Anwendung oder einen Verfahrensvergleich oder waren gar Pilotversuche und dann eine Auslegung verlangt, so war guter Rat zwar nicht teuer, aber er lautete ubereinstimmend: Bei Rautenbach nachlesen.

Membranen spielen bei vielen Stoffaustauschprozessen in der Natur - wie beispielsweiseise...

The environmental clean up industry has been estimated as having an annual turnover of $50 billion globally. With new regulations being written on addi tional chemicals that are just, now, becoming understood from a toxicological and environmental risk standpoint, this industry could expand even further. This is particularly true as more nations become industrialized. Typical conta minants that are of concern include agricultural byproducts, municipal wastes, industrial solvents, petroleum hydrocarbons, heavy metals, pesticides, radioac tive wastes, munitions, and other man made products. In...

In this book, the fundamentals of chemical engineering are presented aiming to applications in micro system technology, microfluidics, and transport processes within microstructures. After a general overview on both disciplines and common areas, recent projects are shortly presented. The combination of different disciplines gives new opportunities in microfluidic devices and process intensification, respectively.

Special features of the book are the state of the art in micro process engineering, a detailed treatment of transport phenomena for engineers, a design methodology from...

These proceedings are based upon the review lectures, the re- search talks and the accompanying discussion from the NATO Advanced Study Institute on "The Dynamical and Chemical Coupling of the Neutral and Ionized Atmosphere" held at Spatind, Norway April 12-22, 1977. In recent years, in spite of the many subdivisions of atmospher- ic physics it has become clear that a complete understanding of the subject matter requires an interdisciplinary effort of the scien- tists working on a variety of atmospheric phenomena. This Advanced Study Institute was organized in order to meet this demand. A...

This is a first attempt to provide a general analysis of developments in polyimide membrane synthesis and applications. It will serve as a valuable reference for those with an interest in synthesis of polyimides, the chemistry and physical chemistry of polyimide compounds, the separation properties of membranes and in their preparation and application. It is intended as a summary of the current status of polyimide membrane research for the specialist as well as a teaching aid for graduate studies in polymer chemistry. The authors collaboration demonstrates the high level of scientific...

This text presents an accurate survey of current theoretical investigations of chemical reactions, with a focus on the nature of the transition state. Its scope ranges from general basic theories associated with the transition states, to their computer-assisted applications, through to a number of reactions in a state-of-the-art fashion.

Of all the different areas in computational chemistry, density functional theory (DFT) enjoys the most rapid development. Even at the level of the local density approximation (LDA), which is computationally less demanding, DFT can usually provide better answers than Hartree-Fock formalism for large systems such as clusters and solids. For atoms and molecules, the results from DFR often rival those obtained by ab initio quantum chemistry, partly because larger basis sets can be used. Such encouraging results have in turn stimulated workers to further investigate the formal theory as well as...

During the last three decades, it has become increasingly clear that atmospheric modelling and remote sounding of the atmosphere from space, to name just two important application areas, are affected by non-equilibrium processes which have not been incorporated into traditional radiative transfer calculations. These processes, dubbed "non-LTE", are therefore the subject of growing interest among scholars and researchers dealing with the upper atmosphere. This book provides a comprehensive and "global" description of non-LTE infrared emissions in the atmosphere of the Earth and other planets,...

Rubber Toughened Engineering Plastics covers the main physical principles involved in optimum toughening in high temperature engineering plastics and speciality plastics and describes the synthetic strategies used to obtain satisfactorily toughened grades in these materials by control of microstructure. This book will act as a focus for current thought on the principles of rubber toughening and the methods employed for the rubber toughening of major engineering and speciality plastics.

Wavelets seem to be the most efficient tool in signal denoising and compression. They can be used in an unlimited number of applications in all fields of chemistry where the instrumental signals are the source of information about the studied chemical systems or phenomena, and in all cases where these signals have to be archived. The quality of the instrumental signals determines the quality of answer to the basic analytical questions: how many components are in the studied systems, what are these components like and what are their concentrations? Efficient compression of the signal sets can...

This book describes the fascinating wealth of activities as they occur in the design, construction and commissioning of a chemical plant - a jigsaw puzzle of the work of chemical engineers, chemists, constructors, architects, electrical engineers, process automation engineers, economists and legal staff.
The author first takes the reader through the conceptual phase, in which the economic relevance and environmental impact need to be considered and supplemented by accurate estimates of capital requirements and profitability. This phase ends with the choice of an appropriate engineering...

Believed to be a publishing first when originally brought out, this book covers all aspects of centrifugal gas cleaning devices. These are cyclones used as gas-solid separators for dedusting and as gas-liquid separators for demisting. The optimization of cyclone performance for any given task is a sought-after goal but it is one that is seldom achieved in practice. This second edition will help mechanical and chemical engineers to achieve this optimization.

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Das Wagelexikon ist ein umfassendes Nachschlagewerk der Wagepraxis fur alle Nutzer von Waagen in Industrie und Wissenschaft. Es erlautert uber 1000 Begriffe aus der Wagetechnik und verwandten Gebieten; zahlreiche Abbildungen tragen zum besseren Verstandnis bei. Entstanden ist das Lexikon als Gemeinschaftswerk der Physikalisch-Technischen Bundesanstalt (PTB) und des Waagenherstellers METTLER TOLEDO.

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The two-volume reference Wiley Critical Content: Petroleum Technology presents a collection of over 40 articles that were reprinted from the Kirk-Othmer Encyclopedia of Chemical Technology and Ullmann's Encyclopedia of Industrial Chemistry. The articles are organized in three thematic subjects:

PART I: Exploration, Refining, Engineering, and Handling

PART II: Fuels

PART III: Base Chemicals