CONTENTS - INTRODUCTION - 1. BASIC CONSIDERATIONS - Solutions-Suspensions-Emulsions-Surface Activity - 2. PROPERTIES OF EMULSIONS - Particle size and arrangement ; Rheology ; Micelle Theory ; Stability and Interfacial Phenomena ; Causes of Unstable Emulsions - 3. INGREDIENTS AND ADDITIVES - Surfactants-Emulsifying Agents ; Wetting Agents ; Foamers ; Protective Colloids ; Preservatives - 4. ANALYSIS AND TESTING OF EMULSIONS - Type of Emulsion ; Density ; Viscosity ; Surface Tension ; Particle Size ; Water ; PH-Color OdorCorrosion ; Stability ; Performance ; Analytical Procedures ; ASTM Specifications - 5. TECHNIQUES OF EMULSIFICATION - English Method-Continental Method - 6. EMULSIFYING EQUIPMENT - Low-Shear-High-Shear-Rotor-Stator ; Pressurized Fluid ; Vibrational Devices ; Laboratory Equipment - 7. EMULSION PLANTS AND PRODUCTION MACHINERY - Over-all Plan ; Modes of Operation ; Power Requirements ; Mixing Tanks ; Pumps ; Conveyors ; Materials of Construction ; Instrumentation ; Packaging - 8. SELECTED TOPICS - Formulation of Emulsions-HLB-Biodegradability - Regulations - BIBLIOGRAPHY - LIST OF EMULSIFYING AGENTS - SUPPLIERS OF EMULSIFYING AGENTS - GLOSSARY - INDEX - Introduction - Emulsions, though not new, are finding new and wider applications daily. One of the first references to emulsions was recorded by Galen (131-c.201), the Greek physician. Beginning with that early reference to the emulsifying power of beeswax, the art and science of emulsification has flourished. Emulsions are prepared and used for a variety of reasons. As oil paint cannot be applied to a damp surface, it is emulsified in water. The oil paint, then, in the form of an emulsion, can be applied to a damp surface. Therefore, the emulsion can change the application characteristics of a material. Water is a desirable, cheap diluent, and an emulsion is an easy method of using water to dilute materials that are not soluble in water. In addition, the fire hazard of flammable water-insoluble materials can be decreased through emulsification. The odor and taste of water-insoluble materials can be reduced by the use of an emulsion. Cod-liver oil, for example, loses much of its fishy, oily taste when it is emulsified. The kinetics of many reactions are enhanced through the use of emulsion polymerization techniques. On the other hand, emulsions are difficult to manufacture. A small deviation in temperature or mixing speed or small amounts of impurities can prevent the formation of a stable emulsion. Emulsions are sensitive in varying degrees to heat, cold, and age. The production of good, stable emulsions, therefore, is the combination of science and art. It is the purpose of this book to describe the art and technique of emulsification.

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.

Industrial radiography is a well-established non-destructive testing (NDT) method in which the basic principles were established many years ago. However, during 1993-95 the European Standards Organisa tion (CEN) commenced drafting many new standards on NDT including radiographic methods, and when completed these will replace national standards in all the EC member countries. In some cases these standards vary significantly from those in use in the UK at present. These CEN standards are accepted by majority, not unanimous voting, so they will become mandatory even in countries which vote against them. As most are likely to be legal by the time this second edition is published, they are described in the appropriate places in the text. The most important new technical development is the greater use of computers in radiology. In the first edition, computerized tomography was only briefly mentioned at the end of Chapter 11, as it was then largely a medical method with only a few equipments having found a place in industrial use. The method depends on a complex computer program and a large data store. Industrial equipments are now being built, although their spread into industry has been slow. Computer data storage is also being used for radiographic data. Small computers can now store all the data produced by scanning a radiographic film with a small light-spot, and various programs can be applied to these data."

A growing proportion of the world's population is dependent on Seawater Desalination as a source of fresh water for both potable and civil use. One of the main drawbacks of conventional desalination technologies is the substantial energy requirement, which is facing cost increases in the global energy market. "Seawater Desalination" presents an overview of conventional and non-conventional technologies, with a particular focus on the coupling of renewable energies with desalination processes.

The first section of this book presents, in a technical but reader-friendly way, an overview of currently-used desalination processes, from thermal to membrane processes, highlighting the relevant technical features, advantages and disadvantages, and development potential. It also gives a rapid insight into the economic aspects of fresh water production from seawater.

The second section of the book presents novel processes which use Renewable Energies for fresh water production. From the first solar still evaporators, which artificially reproduced the natural cycle of water, technology has progressed to develop complex systems to harness energy from the sun, wind, tides, waves, etc. and then to use this energy to power conventional or novel desalination processes. Most of these processes are still at a preliminary stage of development, but some are already being cited as examples in remote areas, where they are proving to be valuable in solving the problems of water scarcity.

A rapid growth in these technologies is foreseen in the coming years. This book provides a unique foundation, within the context of present and future sustainability, for professionals, technicians, managers, and private and public institutions operating in the area of fresh water supply.

This volume chronicles the proceedings of the 8th International Symposium on Surfactants in Solution (SIS) held in Gainesville, FL, June 10-15, 1990. This series of symposia have been smoothly running since 1976, but the appellation "Surfactants in Solution" was used for the first time in 1982 in Lund. Since then our logo "SIS" has become very familiar to everyone involved in surfactants. In Lund the meeting was billed as the Fourth International Symposium on Surfactants in Solution. Earlier three events were held under different rubrics, but proceedings of all these symposia, except the 7th SIS held in Ottawa in 1988, have been properly documented. As a matter of fact so far 10 volumes have appeared under the title "Surfactants in Solution". 1,2,3 The program for the 9th SIS was very comprehensive and many ramifications of surfactants were covered, and it was a veritable international event. It contained a total of 384 papers by 869 authors from practically every corner of our planet. Just the sheer number of papers is a testimonial to the high tempo of research and tremendous interest in this wonderful class of materials. As in the past, there were plenary lectures (5), invited talks (37), oral presentations (195) and poster presentations (147). The plenary lectures were given by Prof. J. Th. G. Overbeek, Prof. C. A. Bunton, Prof. H. Ti Tien and Dr. J. Swalen. The lecture by Prof. Overbeek, the doyen of surface and colloid science, was a real treat.

This book presents comprehensive information on the relay auto-tuning method for unstable systems in process control industries, and introduces a new, refined Ziegler-Nichols method for designing controllers for unstable systems. The relay auto-tuning method is intended to assist graduate students in chemical, electrical, electronics and instrumentation engineering who are engaged in advanced process control. The book's main focus is on developing a controller tuning method for scalar and multivariable systems, particularly for unstable processes. It proposes a much simpler technique, avoiding the shortcomings of the popular relay-tuning method. The effects of higher-order harmonics are incorporated, owing to the shape of output waveforms. In turn, the book demonstrates the applicability and effectiveness of the Ziegler-Nichols method through simulations on a number of linear and non-linear unstable systems, confirming that it delivers better performance and robust stability in the presence of uncertainty. The proposed method can also be easily implemented across industries with the help of various auto-tuners available on the market. Offering a professional and modern perspective on profitably and efficiently automating controller tuning, the book will be of interest to graduate students, researchers, and industry professionals alike.

This book reports on multidisciplinary research focusing on the analysis, synthesis and design of bionanomaterials. It merges the biophysicists', the biochemists' and bioengineers' perspectives, covering the study of the basic properties of materials and their interaction with biological systems, the development of new devices for medical purposes such as implantable systems, and new algorithms and methods for modeling the mechanical, physical or biological properties of biomaterials. The different chapters, which are based on selected contributions presented at the second edition of BIONAM, held on October 4-7, 2016, in Salerno, Italy, cover both basic and applied research. This includes novel synthetic strategies for nanomaterials, as well as the implementation of bio- and smart materials for pharmacological and medical purposes (e.g. drug delivery, implantable systems), environmental applications, and many others. The book provides a broad audience of academic and professionals with a comprehensive, timely snapshot of the field of biomaterials. Besides offering a set of innovative theories together with the necessary practical tools for their implementation, it also highlights current challenges in the field, thus fostering new discussions and possible future collaborations between groups with different backgrounds.

Concern for the environment has become one of the big issues in modern society, and one of the chief concerns is the environmental impact of modern industrial production. A particularly sensitive issue is the possibility of accidents in industries where there may be severe consequences for people, property and the environment. At one time the nuclear industry was seen as the most likely to be the cause of significant environmental damage, but after the occurrence of several major accidents such as Seveso, Flixborough and Bhopal, that concern extends to much of the chemicals industry. Pressure from society, reflected by strong legislation, coupled with a greater understanding of the impact that chemical processing operations can have, has led to the adoption of higher profile safety and environmental management programs within the chemical industry. Under these programmes existing and new processes are rigorously examined to determine the possible causes and consequences of failure, and the results used to improve the process to make failure less likely. Any process audit, aimed at improving safety or lessening the environmental impact, cannot be carried out using intuition or experience alone, so the discipline of risk analysis has grown as a collection of tools and methods which can be utilized to give a quantitative assessment of the risks involved in operating any given process. In this new book the authors present risk analysis and reduction in a clear and unified way, emphasizing the various different methods which can be used together in a global approach to risk analysis in the chemical process industries. Originally conceived as a text book for graduate level courses in chemical engineering, the clear presentation and thorough coverage will ensure that anyone involved in risk assessment, environmental impact assessment or safety planning will find this book an invaluable source of reference.

This volume contains an archival record of the NATO Advanced Institute on Microscale Heat Transfer - Fundamental and Applications in Biological and Microelectromechanical Systems held in Cesme - Izmir, Turkey, July 18-30, 2004. The ASIs are intended to be high-level teaching activity in scientific and technical areas of current concern. In this volume, the reader may find interesting chapters and various Microscale Heat Transfer Fundamental and Applications. The growing use of electronics, in both military and civilian applications has led to the widespread recognition for need of thermal packaging and management. The use of higher densities and frequencies in microelectronic circuits for computers are increasing day by day. They require effective cooling due to heat generated that is to be dissipated from a relatively low surface area. Hence, the development of efficient cooling techniques for integrated circuit chips is one of the important contemporary applications of Microscale Heat Transfer which has received much attention for cooling of high power electronics and applications in biomechanical and aerospace industries. Microelectromechanical systems are subject of increasing active research in a widening field of discipline. These topics and others are the main themeof this Institute."

This book summarizes the author's findings on the functional principle of flotation reagents, gathered over the past few decades. The fundamentals of and approaches common to surface chemistry are applied to study the reagents' structure and performance, as well as their interaction with minerals. In particular, the book establishes the theoretical criteria for collector performance. It also includes the quantum chemistry parameters, steric configuration, HOMO and LUMO surface of various reagents. The book offers a valuable resource for all university graduate students, researchers and R&D engineers in minerals processing and extractive metallurgy who wish to explore innovative reagents and technologies that lead to more energy efficient and environmentally sustainable solutions.

The complete control system engineering solution for continuous and batch manufacturing plants.

This book presents a complete methodology of control system design for continuous and batch manufacturing in such diverse areas as pulp and paper, petrochemical, chemical, food, pharmaceutical, and biochemical production. Geared to practicing engineers faced with designing increasingly more sophisticated control systems in response to present-day economic and regulatory pressures, Plantwide Process Control focuses on the engineering portion of a plant automation improvement project. It features a full control design information package (Control Requirements Definition or CRD), and guides readers through all steps of the automation process—from the initial concept to design, simulation, testing, implementation, and operation. This unique and practical resource:

• Integrates continuous, batch, and discrete control techniques.
• Shows how to use the methodology with any automation project—existing or new, simple or complex, large or small.
• Relates recent ISO and ISA standards to the discipline of control engineering.
• Illustrates the methodology with a pulp-and-paper mill case study.
• Incorporates numerous other examples, from single-loop controllers to multivariable controllers.

An understanding of the processes involved in the basic and applied physics and chemistry of the interaction of plasmas with materials is vital to the evolution of technologies such as those relevant to microelectronics, fusion and space. The subjects dealt with in the book include: the physics and chemistry of plasmas, plasma diagnostics, physical sputtering and chemical etching, plasma assisted deposition of thin films, ion and electron bombardment, and plasma processing of inorganic and polymeric materials. The book represents a concentration of a substantial amount of knowledge acquired in this area - knowledge which was hitherto widely scattered throughout the literature - and thus establishes a baseline reference work for both established and tyro research workers.

The use of electrochemical techniques by chemists, particularly those who regard themselves as "inorganic" coordination chemists, has undergone a very rapid growth in the last 15-20 years. The techniques, as dassically applied to inorganic species, had their origins in analytical chemistry, and the methodology had assumed, until the mid 60s, more importance than the chemiStry. However, the growth of interest in coordination compounds (including organometallic complexes) having unusually rich of electron-transfer in bio-inorganic redox properties, and in the understanding species, has propelfed electro-chemistry into the foreground of potentially readily available techniques for application to a very wide range of problems of interest to those chemists. This growth has been fuelled additionally by the availability of relatively cheap equipment of growing sophistication and by an increase in the "inorganic" chemists' general knowledge of physical electrochemistry. In particular, with increasing availability and sophistication of eqUipment, kinetic problems are now being addressed, and the range of electrode types and configuration and solvents has been greatly expanded. Furthermore, the rapid expansion of interest in biological problems has opened new avenues in functionalisation of electrodes, in the development of sensory devices and, in a sense, a return to the analytical base of the science, using novel and multi-disciplinary techniques drawing on synthesis chemistry of and electronic micro-engeneering. The drive towards increasing use microcomputer-controlled data analysis and the development of microeledrodes has opened exciting new avenues for the exploration of chemical reactions involving electron-transfer processes.

This book provides an analysis of the reaction mechanisms relevant to a number of processes in which CO2 is converted into valuable products. Several different processes are considered that convert CO2 either in specialty chemicals or in bulk products or fuels. For each reaction, the mechanism is discussed and the assessed steps besides the dark sites of the reaction pathway are highlighted. From the insertion of CO2 into E-X bonds to the reduction of CO2 to CO or other C1 molecules or else to C2 or Cn molecules, the reactions are analysed in order to highlight the known and obscure reaction steps. Besides well known reaction mechanisms and energy profiles, several lesser known situations are discussed. Advancing knowledge of the latter would help to develop efficient routes for the conversion of CO2 into valuable products useful either in the chemical or in the energy industry. The content of this book is quite different from other books reporting the use of CO2. On account of its clear presentation, "Reaction Mechanisms in Carbon Dioxide Conversion" targets in particular researchers, teachers and PhD students.

Recognized experts present incisive analysis of both fundamental and applied problems in this continuation of a highly acclaimed series. Topics discussed include: A thorough and mathematical treatment of periodic phenomena, with consideration of new theories about the transition between `order' and `chaos'; Impedance spectroscopy as applied to the study of kinetics and mechanisms of electrode processes; The use of stoichiometric numbers in mechanism analysis; The electro-osmotic dewatering of clays with important implications for the processing of industrial waste and geotechnical; stabilization; Magnetic effects in electrolytic processes and the electrolytic Hall effect; and The computer analysis and modeling of mass transfer and fluid flow. These authoritative studies will be invaluable for researchers in engineering, electrochemistry, analytical chemistry, materials science, physical chemistry, and corrosion science.

This book is an introduction to the dynamics of reaction-diffusion systems, with a focus on fronts and stationary spatial patterns. Emphasis is on systems that are non-standard in the sense that either the transport is not simply classical diffusion (Brownian motion) or the system is not homogeneous. A important feature is the derivation of the basic phenomenological equations from the mesoscopic system properties. Topics addressed include transport with inertia, described by persistent random walks and hyperbolic reaction-transport equations and transport by anomalous diffusion, in particular subdiffusion, where the mean square displacement grows sublinearly with time. In particular reaction-diffusion systems are studied where the medium is in turn either spatially inhomogeneous, compositionally heterogeneous or spatially discrete. Applications span a vast range of interdisciplinary fields and the systems considered can be as different as human or animal groups migrating under external influences, population ecology and evolution, complex chemical reactions, or networks of biological cells. Several chapters treat these applications in detail.

The book offers a comprehensive report on the design and optimization of a thermochemical heat storage system for use in buildings. It combines theoretical and experimental work, with a special emphasis on model-based methods. It describes the numerical modeling of the heat exchanger, which allows recovery of about two thirds of the waste heat from both solar and thermal energy. The book also provides readers with a snapshot of current research on thermochemical storage systems, and an in-depth review of the most important concepts and methods in thermal management modeling. It represents a valuable resource for students, engineers and researchers interested in thermal energy storage processes, as well as for those dealing with modeling and 3D simulations in the field of energy and process engineering.

During the many years of its publication and subsequent revisions, Paul Jellinek's book has been the standard work on its subject. This new edition, translated into English for the first time, was conceived in response to the increased interest in recent years in perfumes and the sense of smell. This interest has come not only from within the highly competitive perfumery industry, but also from psychologists and market researchers. The original text has impressively withstood the test of time and the approach of this new book has been to supplement it with chapters that are now of critical importance, but which were only touched upon in the original book. A market researcher looks at why people use perfumes; a psychologist examines the motivation of perfume choice; another psychologist discusses odours and a perfumer looks at the effects of odours on human experience and behaviour. In the final chapter the editor compares the original author's views with those of today's experts and suggests which aspects are still valid and in what areas divergent views now prevail. This book is written principally to provide a scientific basis to the craft of perfumery and to enable formulators and marketeers to understand why the smells they create and sell have the effect they do. It allows a systematic approach to the development of these products. Others outside the industry, including psychologists in academia, will find the book an essential reference source.

In modern drug discovery and development, chemical synthesis is one of the key technologies. For the rapid preparation of new test compounds and drug development candidates, several innovative technologies with great potential have emerged: Microreactor chemistry; Nanotechnology and catalysis research; Microwave-assisted organic synthesis; New developments in solid supported synthesis.

This book covers lectures about the theory, use, scope and limitations of these new technologies in chemical synthesis. It provides a useful overview for scientists in the pharmaceutical industry as well as in academic institutions interested in chemical synthesis for drug discovery and development.

Kalia and Fu's novel monograph covers cryogenic treatment, properties and applications of cryo-treated polymer materials. Written by numerous international experts, the twelve chapters in this book offer the reader a comprehensive picture of the latest findings and developments, as well as an outlook on the field. Cryogenic technology has seen remarkable progress in the past few years and especially cryogenic properties of polymers are attracting attention through new breakthroughs in space, superconducting, magnetic and electronic techniques. This book is a valuable resource for researchers, educators, engineers and graduate students in the field and at technical institutions.

This volume presents essential information on chemical reagents commonly used in flotation processes. It comprehensively summarizes the properties, preparation and applications of collectors, frothers, depressants and flocculants. It also discusses the microanalysis of flotation reagents and adsorption measurement. The book offers a valuable resource for all university researchers and students, as wells as R&D engineers in minerals processing and extractive metallurgy who wish to explore innovative reagents and technologies that lead to more energy efficient and environmentally sustainable solutions.

This book covers the fundamental requirements for air, soil and water pollution control in oil and gas refineries, chemical plants, oil terminals, petrochemical plants, and related facilities. In this concise volume, Dr. Bahadori elucidates design and operational considerations relevant to critical systems such as the waste water treatment units, solid waste disposal, and waste water sewer treatment as well as engineering/technological methods related to soil and air pollutions control. Engineers and technical managers in a range of industries will benefit from detail on a diverse list of topics."

Practical applications of soft-matter dynamics are of vital importance in material science, chemical engineering, biophysics and biotechnology, food processing, plastic industry, micro- and nano-system technology, and other technologies based on non-crystalline and non-glassy materials.
"Principles of Soft-Matter Dynamics. Basic Theories, Non-invasive Methods, Mesoscopic Aspects" covers fundamental dynamic phenomena such as diffusion, relaxation, fluid dynamics, normal modes, order fluctuations, adsorption and wetting processes. It also elucidates the applications of the principles and of the methods referring to polymers, liquid crystals and other mesophases, membranes, amphiphilic systems, networks, and porous media including multiphase and multi-component materials, colloids, fine-particles, and emulsions. The book presents all formalisms, examines the basic concepts needed for applications of soft-matter science, and reviews non-invasive experimental techniques such as the multi-faceted realm of NMR methods, neutron and light quasi-elastic scattering, mechanical relaxation and dielectric broadband spectroscopy which are treated and compared on a common and consistent foundation. The standard concepts of dynamics in fluids, polymers, liquid crystals, colloids and adsorbates are comprehensively derived in a step-by-step manner. Principles and analogies common to diverse application fields are elucidated and theoretical and experimental aspects are supplemented by computational-physics considerations.
"Principles of Soft-Matter Dynamics. Basic Theories, Non-invasive Methods, Mesoscopic Aspects" appeals to graduate and PhD students, post-docs, researchers, and industrial scientists alike.

This book builds on and extends the previous book: Perfumery: the psychology and biology of fragrance. Thus, a large part of the book reviews the latest evidence on olfaction research which is relevant to the study of perfumery psychology.

Alistair Lennox's thesis reports on the reactivity of organotrifluoroborates, which are becoming increasingly important reagents in synthesis. The thesis is divided into three sections. The first section describes a method for preparing organotrifluoroborates. The second section reports on a mechanistic investigation into the main application of RBF3K reagents as coupling partners in Suzuki-Miyaura coupling, phenomena identified as arising from organotrifluoroborate hydrolysis and fluoride release. The final section reports on a detailed investigation into the hydrolysis mechanism, a prerequisite for their Suzuki-Miyaura coupling, and how it may be predicted and controlled. This research has uncovered many interesting and useful details and shows how problems associated with Suzuki-Miyaura coupling can best be addressed. There has already been wide industrial uptake of the new procedures and insights. The broad nature and clear and succinct style will make the thesis a valuable resource for anyone working in synthesis, organometallic chemistry, or in homogeneous catalysis.