The main physicochemical aspects of foam and foam films such as preparation, structure, properties, are considered, giving a special emphasis on foam stability. It is shown that the foam and foam films are an efficient object in the study of various surface phenomena and in establishing regularities common for different interfaces, in particular, water/oil interface. The techniques and results on foam films have an independent meaning and involve the latest achievement in this field, with a focus on authors' results.

The book has an expressed monographic character. It reveals joint ideas, i.e. the quantitative approach in treating foams is based on foam film behaviour and the techniques for controlling the foam liquid content, developed by the authors. A major contribution represents the independent consideration of formation and stability of foam films in theoretical and experimental aspects. No monograph published so far reveals these topics in the mentioned manner. Data and information about foams, physicochemical characterization of surfactants, phospholipids and polymers can also be found. Furthermore, the book provides information about: techniques involved in the study of foam films and foam structure and properties; foam drainage; processes of destruction in gravitational and centrifugal fields; reasons for stability of films and their role in the processes running in the foam; mechanical, rheological, optical, thermophysical, electrical properties; foam destruction upon addition of antifoams (mechanism of destruction, techniques, application); scientific principles of controlling foam properties and their application in foam separation and concentration; enhanced oil recovery; thermodynamic and non-equilibrium properties of foam films, stabilized by surfactants, phospholipids and polymers; techniques for the study of surface forces; formation and stability of foam films; black films, including bilayers; new theories of stability of amphiphile bilayer; experiments involved in this stability; application in biology and medicine.

This concise text contains the essential material covered in a book twice its length, making it easier for the reader to understand and find key principles. The book follows a classical approach, with main chapters on conduction, forced conduction, natural convection and radiation. Unusual in such texts, the author discusses more than one aspect of heat transfer when dealing with practical problems.

This book develops an analysis of the air entrainment processes in free-surface flows. These flows are investigated as homogeneous mixtures with variable density. Several types of air-water free-surface flows are studied: plunging jet flows, open channel flows, and turbulent water jets discharging into air. Experimental observations reported by the author confirm the concept that the air-water mixture behaves as a homogeneous compressible fluid in each case. This book will be of great interest to professionals working in many fields of engineering: chemical, civil, environmental, mechanical, mining, metallurgy, and nuclear.
Key Features
* Covers new information on the air-water flow field: air bubble distributions, air-water velocity profiles, air bubble sizes and bubble-turbulence interactions
* Features new analysis is developed for each flow configuration and compared successfully with model and prototype data
* Includes over 372 references and more than 170 figures with over 60 photographs
* Presents useful information for design engineers and research-and-development scientists who require a better understanding of the fluid mechanics of air-water flows

In diesem Buch fassen die Autoren, die teilweise drei Jahrzehnte Ingenieurstudenten unterrichteten, ihr chemisches Fachwissen in verstandlicher Form zusammen. Aus verschiedenen Vorlesungen wurden die fur alle ingenieurwissenschaftlichen Fachrichtungen bedeutenden Themenbereiche neu bearbeitet und so erganzt, dass sie auch ohne begleitende Vorlesung verstanden werden konnen.

Die Themen Werkstoffkunde, Halbleiter, Wasserchemie, Elektrochemie, Umweltschutz und Energie sind u.a. inhaltliche Schwerpunkte. Wichtige Industrieprodukte und -bereiche wie Schwefelsaure, Luftflussigung, Ethylen und Erdol, Kalk, Ammoniak, Natronlauge und Chlor sind als Beispiele chemisch-technischer Prozesse mit einbezogen. Ubungen mit Losungen dienen der Vertiefung des erworbenen Wissens.

"

This is the second volume of a two-volume work devoted to probability theory in physical chemistry, and engineering. Rather than dealing explicitly with the idea of an ongoing random walk, with each chaotic step taking place at fixed time intervals, this volume addresses random environments-- models in which the disorder is frozen in space. It begins with an introduction to the geometry of random environments, emphasizing Bernoulli percolation models. The scope of the investigation then widens as we ask how structural disorder affects the transport process. The final chapters confront the interplay of two different forms of randomness; spatial randomness frozen into the environment and temporal randomness associated with the choices for next steps made by a random walker. The book ends with a discussion of "the ant in the labyrinth" problems and an extensive bibliography that, along with the rest of the material, will be of value to researchers in physics, mathematics, and chemical engineering.

Das eingefuhrte Standardwerk erscheint in der 3. Auflage in voellig neubearbeiteter und erweiterter Ausgabe. Es befasst sich mit allen wichtigen Einzelelementen zur Konstruktion verfahrens- und chemietechnischer Apparate und Anlagen. Entsprechend ihrer Bedeutung in der industriellen Anwendung behandeln die Autoren Details von Warmeaustauschern, Ruhrbehaltern, Trennkolonnen, Behaltern, Silos und Trocknern, jeweils unter dem Aspekt verschiedener Werkstoffe und Konstruktionsvarianten. Die besondere Anordnung von Bildern und Tabellen ermoeglicht den Industriepraktikern einen schnellen Zugriff auf das gerade benoetigte Element. Der Student des konstruktiven Maschinenbaus erhalt ein Nachschlagewerk zur Apparate- und Anlagengestaltung.

Das Buch mit zahlreichen Praxisbeispielen befasst sich mit allen wesentlichen Fragen, die fur die Auslegung von Packungskolonnen bei der Rektifikation, Absorption und Strippung (Desorption) unter Vakuum, im Normal- und Druckbereich bis 100 bar, in der Abluft- und Abwassertechnik von Bedeutung sind.

Es wird ein einheitliches, fur beliebige Einbauten geltendes Modell vorgestellt, mit dem die Flutpunktgeschwindigkeit, der Flussigkeitsinhalt und der Druckverlust im gesamten Belastungsbereich fur regellose Fullkorper, geordnete Fullkorperschichten, fur Rohrkolonnen und fur strukturierte Packungen mit unterschiedlicher Neigung der Stromungskanale vorausberechnet werden kann.

Des Weiteren werden Berechnungsunterlagen fur ca. 200 Fullkorper und Packungen zusammengestellt. Die zahlreichen Rechenbeispiele - insbesondere fur strukturierte Packungen - erleichtern die Anwendung der abgeleiteten Beziehungen."

Fur fortgeschrittene Studenten der Chemie und der Chemischen Verfahrenstechnik sind gute Kenntnisse der Kombinatorischen Chemie heute unverzichtbar. Ihnen und den Studenten angrenzender Bereiche, wie Biochemie, Biologie und Biomedizin, bietet das Lehrbuch einen klaren, in die Tiefe gehenden UEberblick. Fur erfahrene Praktiker in Forschung und Industrie ist es ein essentielles Nachschlagewerk, das durch seinen umfangreichen, hochaktuellen Referenzteil ausfuhrliche weitere Studien ermoeglicht.

Die etwa 100 wichtigsten Begriffe der Warmeubertragung werden erlautert und in Beispielen erklart. Die wichtigsten Berechnungsformeln werden aufgefuhrt, die wichtigsten Definitionen zusammengestellt.
Alles in allem ein rundes Nachschlagewerk, das gerade in der Lehre seinen Stellenwert haben wird. Der lexikalische Aufbau erleichtert die Suche nach den Begriffen, die Beschrankung auf das Wesentliche ermoglicht das schnelle Verstandnis der wichtigen Zusammenhange."

Nach einem halben Jahrhundert fortschreitender Entwicklung gibt dieses Werk einen umfassenden Uberblick uber den wissenschaftlich-technischen Stand aller wesentlichen Bereiche der modernen Lebensmittelverpackung. Wichtige Aspekte sind Wirtschaftlichkeit, Kosten und Energie. Schwerpunkte bilden Verpackungsfunktionen zum Schutz der verpackten Guter sowie Verbraucher und Umwelt, fur Logistik und Verteilung und zur Erfullung gesetzlicher Auflagen. Die Entwicklung auf dem Gebiet Verpackung und Umwelt wird kritisch behandelt. Als Leiter der Forschung und Vorentwicklung eines grossen international tatigen Unternehmens und Dozent fur Verpackung fur angehende Lebensmitteltechnologen an der Universitat Stuttgart-Hohenheim hat der Autor diesen Fortschritt selbst mitgepragt. Seinen enormen Erfahrungsschatz hat er in diesem Buch niedergelegt. Es stellt damit ein Basiswerk der neuzeitlichen Lebensmittelverpackung dar."

The ability to predict the behavior of fermentation systems enhances the possibility of optimizing their performance. Mathematical equations of model systems represent a tool for this and the most recent advances in computer hardware and software have made the approach more effective than previous simplistic attempts. The current knowledge of biochemical microbial pathways and the experience in optimization of chemical reactors combined with extremely powerful and accessible computers, loaded with easy to use software and mathematical routines, are changing the way processes are being developed and operated.

This book has been written for all those who work with microbial cultures, providing a useful, quick and contemporary re-education for practitioners and students alike, breaking through interdisciplinary barriers. Biologists, engineers and biochemists will benefit from the methods of microbial process description and optimization based on mathematical equations. The basic techniques of modeling the bio-system are summarized in Part I. The useful concept of mass balancing is introduced in Part II for those who are not used to this simple and very useful engineering tool. An extensive and descriptive case study of a selected fermentation bio-process in Part III elucidates further the concepts of very pragmatic mathematical modeling of bioreactor systems.

The volume outlines how to simply develop mathematical models of microbial systems and demonstrates their power to: guide and minimize the experimental work; check the consistency of experimental results; predict the behavior of the bio-system and analyze biocatalytic processes; diagnose the anomalies in the microbial culture behavior and optimize the performance of bioreactors.

A Dictionary of Chemical Engineering is one of the latest additions to the market leading Oxford Paperback Reference series. In over 3,400 concise and authoritative A to Z entries, it provides definitions and explanations for chemical engineering terms in areas including: materials, energy balances, reactions, separations, sustainability, safety, and ethics. Naturally, the dictionary also covers many pertinent terms from the fields of chemistry, physics, biology, and mathematics. Useful entry-level web links are listed and regularly updated on a dedicated companion website to expand the coverage of the dictionary. Comprehensively cross-referenced and complemented by over 60 line drawings, this excellent new volume is the most authoritative dictionary of its kind. It is an essential reference source for students of chemical engineering, for professionals in this field (as well as related disciplines such as applied chemistry, chemical technology, and process engineering), and for anyone with an interest in the subject.

This is a modern introductory book on sensors, combining underlying theory with bang up to date topics such as nanotechnology. The text is suitable for graduate students and research scientists with little background in analytical chemistry. It is user-friendly, with an accessible theoretical approach of the basic principles, and references for further reading. The book covers up-to-date advances in the sensor field, e.g. nanotechnology and quantum dots. It includes calculation exercises and solutions, and the accompanying website contains Powerpoint slides.

In today's world, it has become necessary to shift towards a more eco-friendly and sustainable approach in the industrial field to reduce pollution and stop toxic chemicals from entering the environment. Green chemistry is an emerging concept that can be utilized to assist with these environmental issues. To ensure this concept is employed to its full potential, further study on the best practices and challenges of implementation are required. Green Chemistry for the Development of Eco-Friendly Products discusses the main objective of green chemistry and how it can redefine and modify manufacturing processes and products in order to decrease hazards to human health. The book also considers key concepts of green chemistry, such as the need to make better use of available resources for the development of a chemical process. Covering critical topics such as bioplastics, waste, and hydrogen law, this reference work is ideal for chemists, business owners, environmentalists, policymakers, academicians, scholars, researchers, practitioners, instructors, and students.