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Author: Aristotelis Xénakis
Publisher:
ISBN:
Category :
Languages : fr
Pages : 186
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Book Description
Données sur l'utilisation des microémulsions comme des membranes liquides. Les microgouttelettes de la phase dispersée de la microémulsion peuvent jouer le rôle de transporteur de différentes substances. Ainsi les microémulsions huile-eau sont utilisées pour le transport de composés lipophiles, alors que les microémulsions eau-huile sont utilisées pour le transport de sels métalliques. On propose des modèles théoriques pour interprêter les faits observés. La technique développée est aussi utilisée pour l'extraction liquide-liquide des cations métalliques. La combinaison des microémulsions avec des réactifs d'extraction du type éther-couronne accélère fortement la cinétique du processus
Author: Aristotelis Xénakis
Publisher:
ISBN:
Category :
Languages : fr
Pages : 186
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Book Description
Données sur l'utilisation des microémulsions comme des membranes liquides. Les microgouttelettes de la phase dispersée de la microémulsion peuvent jouer le rôle de transporteur de différentes substances. Ainsi les microémulsions huile-eau sont utilisées pour le transport de composés lipophiles, alors que les microémulsions eau-huile sont utilisées pour le transport de sels métalliques. On propose des modèles théoriques pour interprêter les faits observés. La technique développée est aussi utilisée pour l'extraction liquide-liquide des cations métalliques. La combinaison des microémulsions avec des réactifs d'extraction du type éther-couronne accélère fortement la cinétique du processus
Author: Aristotelis Xenakis (auteur d'une thèse de sciences.)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 151
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Book Description
Author: William Gelbart
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 632
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Book Description
Author: ABDELOUAHED.. DEROUICHE
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Book Description
DES MICROEMULSIONS A BASE D'AOT OU DE TENSIOACTIFS NON IONIQUES (TYPE WII) SONT UTILISEES COMME VEHICULE POUR TRANSPORTER DES SOLUTES (PICRATE DE POTASSIUM, SELS DE NICKEL) ENTRE DEUX INTERFACES LIQUIDE-LIQUIDE. ON EXAMINE UN CERTAIN NOMBRE DE PARAMETRES QUI INFLUENT SUR LE FLUX DE SOLUTE TRANSPORTE ET ON MONTRE QUE LES DIFFERENTS MECANISMES DE TRANSFERT SONT POSSIBLES SUIVANT LA NATURE DU TENSIOACTIF. ON ETUDIE DE PLUS LE TANSPORT D'IONS METALLIQUES A TRAVERS LES MEMBRANES LIQUIDES COUPLANT LES MICRO-GOUTTELETTES AVEC UN EXTRACTANT LIPOPHILE (KELEX 100). ENFIN ON MONTRE QUE LA SOLUBILISATION MAXIMUM D'EAU SALEE DANS LES SYSTEMES AOT/DECANE EST CORRELEE AVEC UN PHENOMENE DE PERCOLATION DE CONDUCTIVITE
Author: Monzer Fanun
Publisher: CRC Press
ISBN: 1420089609
Category : Science
Languages : en
Pages : 568
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Book Description
The effective use of microemulsions has increased dramatically during the past few decades as major industrial applications have expanded in a variety of fields. Microemulsions: Properties and Applications provides a complete and systematic assessment of all topics affecting microemulsion performance and discusses the fundamental characteristics, t
Author:
Publisher: Editions TECHNIP
ISBN: 9782710804918
Category : Science
Languages : fr
Pages : 724
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Book Description
Author: Bernard Valeur
Publisher: Springer Science & Business Media
ISBN: 364256853X
Category : Science
Languages : en
Pages : 496
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Book Description
This first volume in the new Springer Series on Fluorescence brings together fundamental and applied research from this highly interdisciplinary and field, ranging from chemistry and physics to biology and medicine. Special attention is given to supramolecular systems, sensor applications, confocal microscopy and protein-protein interactions. This carefully edited collection of articles is an invaluable tool for practitioners and novices.
Author: Pau Loke Show
Publisher: Elsevier
ISBN: 0128223987
Category : Technology & Engineering
Languages : en
Pages : 330
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Book Description
Downstream bioprocesses have a significant role to play in the creation of a sustainable bio-based economy, enabling the creation of new products and systems from the more sustainable bioprocessing of natural products. Liquid Biphasic System: Fundamentals, Methods, and Applications in Bioseparation Technology explores in detail the fundamental processes and applications of this new separation system, aiding understanding of the basic principles of the technique and offering constructive criticisms on the latest findings.Including coverage of the background, principles, mechanisms, and applications, Liquid Biphasic System addresses how to adapt the technology for the purification of useful compounds with greater cost efficiency and greener processing. It is essential reading for bioprocess engineers, biochemical engineers, biosystem engineers, chemists and microbiologists working in the fields of bioprocessing. Researchers, scientists, and engineers concerned with the selection and evaluation of alternative bioseparation processes will find the book particularly useful. - Provides information and examples of advanced separations in a single source - Includes detailed descriptions of novel bioseparation systems - Covers the latest technologies related to advanced liquid–liquid separation and their applications in various industries
Author: John D. Wright
Publisher: CRC Press
ISBN: 1482283166
Category : Science
Languages : en
Pages : 136
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Book Description
Sol-Gel processing methods, first used historically for decorative and constructional materials, were extensively developed in the last century for applications such as glasses, ceramics, catalysts, coatings, composites and fibres. Today they are reaching their full potential, enabling the preparation of new generations of advanced materials not easily accessible by other methods yet using mild, low-energy conditions. The topic is therefore increasingly included in advanced undergraduate, MSc and PhD programmes in the areas of chemistry, physics and materials science. This concise introductory text, written at the advanced undergraduate/first-year postgraduate level, is also suitable as an introduction to the development, mechanisms, chemistry, characterisation methods and applications of the technique. It provides readers with an extensive yet concise grounding in the theory of each area of the subject and details the real and potential applications and the future prospects of sol-gel chemistry.
Author: S. Hyde
Publisher: Elsevier
ISBN: 0080542549
Category : Science
Languages : en
Pages : 397
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Book Description
This book develops the thesis that structure and function in a variety of condensed systems - from the atomic assemblies in inorganic frameworks and organic molecules, through molecular self-assemblies to proteins - can be unified when curvature and surface geometry are taken together with molecular shape and forces. An astonishing variety of synthetic and biological assemblies can be accurately modelled and understood in terms of hyperbolic surfaces, whose richness and beauty are only now being revealed by applied mathematicians, physicists, chemists and crystallographers. These surfaces, often close to periodic minimal surfaces, weave and twist through space, carving out interconnected labyrinths whose range of topologies and symmetries challenge the imaginative powers.The book offers an overview of these structures and structural transformations, convincingly demonstrating their ubiquity in covalent frameworks from zeolites used for cracking oil and pollution control to enzymes and structural proteins, thermotropic and lyotropic bicontinuous mesophases formed by surfactants, detergents and lipids, synthetic block copolymer and protein networks, as well as biological cell assemblies, from muscles to membranes in prokaryotic and eukaryotic cells. The relation between structure and function is analysed in terms of the previously neglected hidden variables of curvature and topology. Thus, the catalytic activity of zeolites and enzymes, the superior material properties of interpenetrating networks in microstructured polymer composites, the transport requirements in cells, the transmission of nerve signals and the folding of DNA can be more easily understood in the light of this.The text is liberally sprinkled with figures and colour plates, making it accessible to both the beginning graduate student and researchers in condensed matter physics and chemistry, mineralogists, crystallographers and biologists.
