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Etude Des Transferts De Matiere En Evaporation Osmotique
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Book Synopsis Etude des transferts de matière en évaporation osmotique by : Mathilde Courel
Download or read book Etude des transferts de matière en évaporation osmotique written by Mathilde Courel and published by . This book was released on 1999 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'EVAPORATION OSMOTIQUE (EO) EST UNE TECHNIQUE RECENTE PERMETTANT DE CONCENTRER DES SOLUTIONS AQUEUSES FRAGILES, A TEMPERATURE AMBIANTE ET A PRESSION ATMOSPHERIQUE. LE PRINCIPE REPOSE SUR L'EXTRACTION EN PHASE VAPEUR DES COMPOSES VOLATILS, AVEC UNE MEMBRANE MACROPOREUSE HYDROPHOBE ET UNE SOLUTION SALINE TRES CONCENTREE. DES DENSITES DE FLUX ELEVEES SONT OBTENUES GRACE A UN MODULE PLAN, OPTIMISE SUR LES CONDITIONS DE CIRCULATION DES FLUIDES ET L'UTILISATION DE LA SURFACE MEMBRANAIRE. L'ETUDE DU TRANSFERT DE SOLVANT EST MENEE SUR DES SOLUTIONS MODELES EAU-SACCHAROSE CONCENTREES SUR UN PROTOTYPE DE LABORATOIRE OU SONT CONTROLEES CONCENTRATION, VITESSE DE CIRCULATION ET TEMPERATURE DES SOLUTIONS. L'EFFET MAJEUR SUR LA DENSITE DE FLUX DE VAPEUR PROVIENT DE LA TENEUR EN SOLUTE QUI AGIT PAR L'INTERMEDIAIRE DE L'ACTIVITE DE LA SAUMURE ET DE LA VISCOSITE DES SOLUTIONS SUCREES. LA MODELISATION DES TRANSFERTS EN MILIEU GAZEUX SUPPOSE UNE CONNAISSANCE PRECISE DE LA STRUCTURE MEMBRANAIRE. LA MESURE DE CARACTERISTIQUES STRUCTURALES ET D'ANGLES DE CONTACT SUR LA MEMBRANE UTILISEE MONTRE QUE LA DEFINITION CLASSIQUE DE CES PARAMETRES EST PEU ADAPTEE A L'EO, ET REND DIFFICILE L'INTERPRETATION DES MECANISMES DE DIFFUSION GAZEUSE. LA POLARISATION EN CONCENTRATION COTE SAUMURE DEVIENT IMPORTANTE AUX FAIBLES VITESSES DE CIRCULATION. L'ESTIMATION DE LA RESISTANCE AU TRANSFERT DE MATIERE DES LIQUIDES, NON PREVISIBLE PAR LES CORRELATIONS CLASSIQUES DE NOMBRES ADIMENSIONNELS, SUPPOSE L'ELABORATION D'UN MODELE SPECIFIQUE A L'HYDRODYNAMIQUE DU MODULE. LE PASSAGE DES COMPOSES D'AROME DE SOLUTIONS MODELES A TRAVERS LES FIBRES CREUSES D'UNE UNITE PILOTE D'EO EST MIS EN EVIDENCE GRACE A UNE METHODE DE CPG. LES PERTES D'AROME DE JUS DE FRUIT DE LA PASSION AU COURS DE LA CONCENTRATION SONT SIGNIFICATIVEMENT MOINS IMPORTANTES EN EO QU'EN EVAPORATION SOUS VIDE. ENFIN LE COUPLAGE DE L'EO AVEC LA MICROFILTRATION TANGENTIELLE ABOUTIT A UN PRODUIT DE CONCENTRATION INTERMEDIAIRE DE QUALITE PROCHE DU JUS INITIAL.
Book Synopsis ETUDE DES TRANSFERTS DE COMPOSES D'AROME AU COURS DE LA CONCENTRATION PAR EVAPORATION OSMOTIQUE by : Fadi Ali
Download or read book ETUDE DES TRANSFERTS DE COMPOSES D'AROME AU COURS DE LA CONCENTRATION PAR EVAPORATION OSMOTIQUE written by Fadi Ali and published by . This book was released on 2004 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail s'inscrit dans le cadre de l'étude des potentialités de l'évaporation osmotique pour la concentration des jus de fruit. Il a pour principaux objectifs de quantifier l'impact du procédé sur la qualité aromatique des concentrés et d'appréhender les mécanismes prédominants sur les transfert de composés d'arôme. Les cinétiques de transfert de 4 composés d'arôme dans des solutions modèles ont été mesurées lors d'expériences conduites sur 2 installations pilotes (10 m2 fibres creuses, 40 cm2 plane). D'importants phénomènes d'adsorption ont été mis en évidence sur les installations. Ils peuvent être limités en choisissant un matériau adapté pour les canalisations. Les transferts transmembranaires de composés d'arôme dépendent fortement de leurs caractéristiques et des conditions opératoires. La rétention des composés d'arôme est favorisée lorsque la teneur en extrait sec soluble (ESS) du jus et sa température sont élevées. Par contre l'effet de la vitesse de circulation dépend de l'ESS du jus. En vue d'étudier les mécanismes qui régissent les transferts de composés d'arôme, des modèles de transfert ont été développés. La résistance aux transferts en phase liquide côté solution extractante est prédominante lorsque l'ESS côté jus est inférieure à 30%. Au delà, c'est la résistance opposée côté jus qui devient prépondérante. Ces premiers travaux portant spécifiquement sur les transferts de composés d'arôme mettent en évidence la complexité des phénomènes mis en jeu. Dans une perspectives d'utilisation industrielle, une étude complémentaire sur jus de fruit réels doit notamment être envisagée.
Book Synopsis Comprehensive Membrane Science and Engineering by : Enrico Drioli
Download or read book Comprehensive Membrane Science and Engineering written by Enrico Drioli and published by Newnes. This book was released on 2010-07-09 with total page 1528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Membrane Science and Engineering, Four Volume Set covers all aspects of membrane science and technology - from basic phenomena to the most advanced applications and future perspectives. Modern membrane engineering is critical to the development of process-intensification strategies and to the stimulation of industrial growth. The work presents researchers and industrial managers with an indispensable tool toward achieving these aims. Covers membrane science theory and economics, as well as applications ranging from chemical purification and natural gas enrichment to potable water Includes contributions and case studies from internationally recognized experts and from up-and-coming researchers working in this multi-billion dollar field Takes a unique, multidisciplinary approach that stimulates research in hybrid technologies for current (and future) life-saving applications (artificial organs, drug delivery)
Book Synopsis Etude des transferts sur des systèmes à membrane non-conventionnels by : Julio Romero Figueroa
Download or read book Etude des transferts sur des systèmes à membrane non-conventionnels written by Julio Romero Figueroa and published by . This book was released on 2002 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modelling in Aquatic Chemistry by : OECD Nuclear Energy Agency
Download or read book Modelling in Aquatic Chemistry written by OECD Nuclear Energy Agency and published by Nuclear Energy Agency. This book was released on 1997 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Membranes and Membrane Processes by : Enrico Drioli
Download or read book Membranes and Membrane Processes written by Enrico Drioli and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past two decades Membrane Science and Technology has made tremendous progress and has changed from a simple laboratory tool to large scale processes with numerous applications in Medicine and Industry. In this volume are collected papers presented at the First Europe Japan Congress on Membrane and Membrane processes, held in Stresa in June 1984. Other contributions to the Conference will be published in a special issue of the Journal of Membrane Science. This Conference was organized by the European Society of Membrane Science and Technology and the Membrane Society of Japan, to bring together European Scientists and Engineers face to face with their colleagues from Japan; in both countries membrane processes will play a strategic role in many industrial areas in the 1990s, as predicted by the Japanese project for Next Generation Industries and by the EEC Project on Basic Techno logical Research (BRITE). The large number of participants, of about four hundred from twenty six countries including USA, Australia, China and Brazil, the quality of the Plenary Lectures and Scientific Communications made the Conference a significant international success.
Book Synopsis Eau Dans la Zone Non Saturée by : P. E. Rijtema
Download or read book Eau Dans la Zone Non Saturée written by P. E. Rijtema and published by . This book was released on 1968 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Processed Meats written by A.M. Pearson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been updated and expanded to give more complete coverage than the earlier edition. Like the earlier edition, it emphasizes basic scientific principles in volved in production of processed meat and poultry products. In addi tion, many product formulations and processing procedures that have been tested under commercial conditions are included. Intended as a university text for advanced undergraduate and grad uate students enrolled in the meat processing course, it is hoped that this book will also prove useful as a reference book to industry and government scientists and researchers engaged in or associated with meat and poultry processing. A. M. Pearson F. W. Taubert tDeceased 1 Introduction to Meat Processing Meat processing as discussed in this text includes all processes uti lized in altering fresh meat except for simple grinding, cutting, and mixing. In the broadest sense, this includes curing, smoking, canning, cooking, freezing, dehydration, production of intermediate-moisture products, and the use of certain additives such as chemicals and en zymes. However, the definition excludes cutting, grinding, and pack aging of fresh meats in retail stores and in homes. In this way, the definition differentiates between (1) those processes that enter into the preservation and manufacturing of meat products, and (2) those that alter the form of fresh meat in preparation for consumption.
Book Synopsis Water in the Unsaturated Zone by : P. E. Rijtema
Download or read book Water in the Unsaturated Zone written by P. E. Rijtema and published by . This book was released on 1969 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sucrose written by M. Mathlouthi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an up-to-date overview of the economic, chemical, physical, analytical and engineering aspects of the subject, gathering together information which would otherwise be scattered over a wide variety of sources.
Book Synopsis L'eau Dans la Zone Non Saturée by : P. E. Rijtema
Download or read book L'eau Dans la Zone Non Saturée written by P. E. Rijtema and published by . This book was released on 1969 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Purpose of the symposium was to present and discuss original papers on various problems concerning soil moisture, movement of water in the unsaturated zone and to stress the importance of the unsaturated zone within the hydrological cycle and the relations of water in this zone with underground water.
Book Synopsis Membrane Contactors: Fundamentals, Applications and Potentialities by : Enrico Drioli
Download or read book Membrane Contactors: Fundamentals, Applications and Potentialities written by Enrico Drioli and published by Elsevier. This book was released on 2011-08-30 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane Contactors: Fundamentals, Applications and Potentialities, Volume 11 covers new operations that could be efficiently used to improve the performance of a variety of industrial production cycles in applications ranging from biotechnology to agrofood. This book focuses on the basic "principles of work": required membrane materials and properties; major operating parameters; the importance of module configuration and design and; the performance of membrane contactors in specific processes. The authors’ dynamic approach to this subject makes Membrane Contactors: Fundamentals, Applications and Potentialities, Volume 11 the most comprehensive book currently available on all aspects related to the 'membrane contactor world. * Describes new unit operations in process engineering * Covers a wide variety of industrial applications, from biotechnology to agrofood * Applicable to process intensification and sustainable growth strategies
Book Synopsis Dictionary of Building and Civil Engineering by : Don Montague
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Book Synopsis Bulletin de l'Institut international du froid by : International Institute of Refrigeration
Download or read book Bulletin de l'Institut international du froid written by International Institute of Refrigeration and published by . This book was released on 1971 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plant Response to Climatic Factors by : R. O. Slatyer
Download or read book Plant Response to Climatic Factors written by R. O. Slatyer and published by . This book was released on 1973 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Industrial Drying by : Arun S. Mujumdar
Download or read book Handbook of Industrial Drying written by Arun S. Mujumdar and published by CRC Press. This book was released on 2006-11-08 with total page 1310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Still the Most Complete, Up-To-Date, and Reliable Reference in the FieldDrying is a highly energy-intensive operation and is encountered in nearly all industrial sectors. With rising energy costs and consumer demands for higher quality dried products, it is increasingly important to be aware of the latest developments in industrial drying technolog
Book Synopsis References no. 21505-25161 / AAR-ZUR by : Zdenek Sesták
Download or read book References no. 21505-25161 / AAR-ZUR written by Zdenek Sesták and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
