Download or read book ETUDE DES INTERACTIONS SOLUTES FIBRES DE CHARBON ACTIF written by Michel Baudu and published by . This book was released on 1990 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: DES MATERIAUX DE CHARBON ACTIF DE CONCEPTIONS NOUVELLES ONT FAIT LEUR APPARITION DANS LES DOMAINES DU TRAITEMENT DE L'AIR ET DE L'EAU (FIBRES, TISSUS OU MEMBRANES). NOTRE RECHERCHE PORTE SUR L'EFFICACITE ET LA REGENERATION DE CES MATERIAUX EN COMPARAISON AVEC DES CHARBONS ACTIFS DE PRESENTATION CLASSIQUE (GRAINS-POUDRE). L'ETUDE PRESENTEE APPORTE: 1) UNE MISE EN EVIDENCE DES CARACTERISTIQUES PHYSICOCHIMIQUES DE CES FIBRES TISSEES ET UNE CONTRIBUTION A L'ANALYSE DES INTERACTINS ENTRE LES MOLECULES ADSORBEES ET LE CHARBON ACTIF. LES ENERGIES D'ADSORPTION SONT ESTIMEES ET SONT RELIEES A DES CARACTERISTIQUES PHYSICOCHIMIQUES DE L'ADSORBAT. UNE ETUDE RMN DU SOLIDE A PERMIS DE MIEUX APPRECIER LA NATURE DE CES INTERACTIONS. ON REMARQUE LE ROLE IMPORTANT DE L'EAU DANS LE MECANISME DE L'ADSORPTION; 2) UNE APPRECIATION DES POSSIBILITES ET DES PERFORMANCES DE CES FIBRES AU TRAITEMENT D'EAU CHARGEE. L'INFLUENCE DE LA STRUCTURE DU SUPPORT, DE L'ADSORBAT ET DE LA COMPETITION DES SOLUTES EST OBSERVEE. L'ETUDE DES CAPACITES D'ADSORPTION MONTRE UNE EFFICACITE DES TOILES SUR LE CHARBON EN GRAINS OU EN POUDRE. LES CINETIQUES D'ADSORPTION SONT DE 10 A 50 FOIS PLUS RAPIDES QUE SUR UN CHARBON EN GRAINS; 3) DES POSSIBILITES NOUVELLES DE CONCEPTION DE FILTRES EN COUCHE MINCE. LES PERFORMANCES DE TELS DISPOSITIFS ONT ETE APPROCHES. UN PILOTE INDUSTRIEL DE TRAITEMENT D'AIR CHARGE EN SOLVANT A PERMIS DE METTRE EN EVIDENCE LES CAPCITES ET LES LIMITES DU SYSTEME DE REGENERATION A L'AIR CHAUD. UNE ETUDE DE LABORATOIRE NOUS A CONDUIT A UTILISER UNE METHODE ORIGINALE DE DESORPTION IN SITU PAR VOIE THERMIQUE. UNE PUISSANCE ELECTRIQUE EST APPLIQUEE AU TISSU DE CHARBON ACTIF. CELUI-CI S'ECHAUFFE INTRINSEQUEMENT PAR EFFET JOULE. LE PROCEDE EST MAITRISE

Download or read book Progress in Microalgae Research written by Leila Queiroz Zepka and published by BoD – Books on Demand. This book was released on 2022-11-02 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Microalgae Research - A Path for Shaping Sustainable Futures consolidates the latest research, developments, and advances in the field of microalgae biotechnology. The book’s chapters take a close look at and highlight the wide commercial potential of microalgae-based processes and products. This book is a useful resource for researchers and academic and industry professionals in the field of microalgae biotechnology.

Download or read book ETUDES DES INTERACTIONS SOLUTE CHARBON ACTIF written by Pierre Le Cloirec and published by . This book was released on 1985 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: DETERMINATION DES MECANISMES D'ADSORPTION DE SOLUTE E NONTOU DE BIODEGRADATION DE SUBSTRATS EN REACTEURS DISCONTINUS GARNIS DE CHARBON ACTIF RECOUVERT OU NON DE BACTERIES. PERFORMANCE EN CONTINU DES FILTRES BIOLOGIQUES A CHARBON ACTIF VIS-A-VIS DE LA CHARGE POLLUANTE GLOBALE ET DE DIVERS POLLUANTS ORGANIQUES AZOTES SOLUBLES.

Download or read book Water Research written by and published by . This book was released on 1993 with total page 1208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proc d s d adsorption sur tissus de carbone active application au traitement des eaux written by Catherine Brasquet and published by . This book was released on 1998 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL A POUR OBJET L'ETUDE DES PROCEDES D'ADSORPTION D'UN MATERIAU RECENT, LES TISSUS DE CARBONE ACTIVE, ET SON APPLICATION AU TRAITEMENT DE L'EAU. UNE CARACTERISATION PHYSICO-CHIMIQUE DE TISSUS DE CARBONE ACTIVE EX-RAYONNE MONTRE QUE CE SONT DES MATERIAUX MICROPOREUX ET DE SURFACES SPECIFIQUES ELEVEES, LA POROSITE FINALE ETANT FONCTION DES CONDITIONS D'ACTIVATION. PAR RAPPORT A UN CHARBON ACTIF EN GRAINS, ILS DEVELOPPENT D'IMPORTANTES SURFACES EXTERNES AUXQUELLES SONT DIRECTEMENT CONNECTES LES MICROPORES. CES DEUX SPECIFICITES PERMETTENT D'OBTENIR DES VITESSES INITIALES D'ADSORPTION DE MICROPOLLUANTS ORGANIQUES 2 A 20 FOIS PLUS IMPORTANTES QUE CELLES D'UN CHARBON ACTIF EN GRAINS, DU FAIT D'UNE IMPORTANTE SURFACE DE CONTACT FLUIDE-SOLIDE ET D'UNE DIMINUTION DE LA RESISTANCE AU TRANSFERT INTRAPARTICULAIRE DES POLLUANTS. LES DIFFERENCES ENTRE LES CAPACITES D'ADSORPTION DES DEUX FORMES D'ADSORBANT SONT MOINS MARQUEES, MEME SI L'IMPORTANT RESEAU MICROPOREUX DES FIBRES PERMET D'OBTENIR DES CAPACITES D'ADSORPTION DE L'ORDRE DE 500 MG G#-#1. UNE ANALYSE QUALITATIVE DE CES DONNEES, APPUYEE PAR UNE RELATION QUANTITATIVE ENTRE L'ADSORPTION ET LA TOPOLOGIE MOLECULAIRE DES ADSORBANTS, MONTRE QUE L'ADSORPTION DOIT AVOIR LIEU ENTRE LES PLANS DE BASE DES FIBRES DE CARBONE ACTIVE, PAR DES INTERACTIONS DONNEUR-ACCEPTEUR D'ELECTRONS ENTRE LA SURFACE DES FIBRES ET LE SOLUTE. DES COMPOSES AROMATIQUES, OU HYDROPHOBES, SEMBLENT FAVORISES. L'ETUDE DES PERFORMANCES HYDRO-AERAULIQUES DES TISSUS MONTRE L'INFLUENCE SUR LES PERTES DE CHARGE DE CARACTERISTIQUES SPECIFIQUES AUX STRUCTURES TISSEES (ARMURE, NOMBRE D'INTERSTICES, ETC.), QUI RENDENT DIFFICILES D'UTILISATION DES MODELES CLASSIQUES D'ECOULEMENT DU TYPE ERGUN. L'APPLICATION DU MODELE DE COMITI PERMET DE SUPPOSER QUE L'ECOULEMENT A LIEU A L'INTERIEUR DES FILS DU TISSU. LES CAPACITES D'ADSORPTION OBTENUES EN REACTEUR CONTINU SONT ELEVEES, COMPRISES ENTRE 50 ET 250 MG G#-#1 SELON LE SOLUTE, AVEC UN FAIBLE FRONT D'ADSORPTION, DE L'ORDRE DE 3,2 MM. LES DEUX COMPORTEMENTS DYNAMIQUES, ECOULEMENT ET ADSORPTION, SONT CHACUN MODELISES AVEC SUCCES AU MOYEN D'UN RESEAU NEURONAL PRENANT EN COMPTE LES PARAMETRES INFLUENCANT LES PROCESSUS (RESPECTIVEMENT CARACTERISTIQUES SPECIFIQUES AUX TISSUS ET DIFFUSION INTRAPARTICULAIRE).

Download or read book Historical Painting Techniques Materials and Studio Practice written by Arie Wallert and published by Getty Publications. This book was released on 1995-08-24 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the fields of conservation, art history, and museum curating, this volume contains the principal papers from an international symposium titled "Historical Painting Techniques, Materials, and Studio Practice" at the University of Leiden in Amsterdam, Netherlands, from June 26 to 29, 1995. The symposium—designed for art historians, conservators, conservation scientists, and museum curators worldwide—was organized by the Department of Art History at the University of Leiden and the Art History Department of the Central Research Laboratory for Objects of Art and Science in Amsterdam. Twenty-five contributors representing museums and conservation institutions throughout the world provide recent research on historical painting techniques, including wall painting and polychrome sculpture. Topics cover the latest art historical research and scientific analyses of original techniques and materials, as well as historical sources, such as medieval treatises and descriptions of painting techniques in historical literature. Chapters include the painting methods of Rembrandt and Vermeer, Dutch 17th-century landscape painting, wall paintings in English churches, Chinese paintings on paper and canvas, and Tibetan thangkas. Color plates and black-and-white photographs illustrate works from the Middle Ages to the 20th century.

Download or read book Bulletin de L Institut International Du Froid written by and published by . This book was released on 2008 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Excerpta Medica written by and published by . This book was released on 1984 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pandex Current Index to Scientific and Technical Literature written by and published by . This book was released on 1970 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dynamical Character of Adsorption written by Jan Hendrik Boer and published by Clarendon Press. This book was released on 1968 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Organic Micropollutants in the Aquatic Environment written by G. Angeletti and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than 10 years after the "First European Symposium on Organic Micropollutants in the Aquatic Environment", the "Sixth Symposium" was held in Lisbon (Portugal) from 22 to 24 May 1990. The Symposium was organised within the framework of the Concerted Action COST 641 * which is included in the Fourth R&D Programme on the Environment of the Commission of the European Communities expiring at the end of 1990. After restructuring the Concerted Action in 1984, particular attention has been devoted to fate and transformation of organic micropollutants in the aquatic environment. Therefore, a major aim of the Symposium was to review current studies and progress in these areas, besides more general aspects related to analytical methodologies and behaviour of pollutants during water treatment processes. This volume contains the plenary papers presented in the following sessions at the Symposium: - Multidisciplinary studies - Partitioning of organic micropollutants in the aquatic environment - Novel analytical techniques in environmental chemistry - Monitoring micropollutant - Degradation of organic micropollutants during field conditions - Reclamation of polluted ground water - Chemical and photochemical oxidation - Future of environmental chemistry. In addition, extended versions of posters are included, covering the four topics which are dealt within the four Working Parties forming the structure of the Concerted Action: 1. Analytical methodologies 2. Transport and distribution 3. Transformation reactions 4. Water treatment. We believe that the Proceedings give a good overview of current activities in these fields of research in Europe.

Download or read book Activated Carbon written by Harry Marsh and published by Elsevier. This book was released on 2006-07-12 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen an expansion in speciality uses of activated carbons including medicine, filtration, and the purification of liquids and gaseous media. Much of current research and information surrounding the nature and use of activated carbon is scattered throughout various literature, which has created the need for an up-to-date comprehensive and integrated review reference. In this book, special attention is paid to porosities in all forms of carbon, and to the modern-day materials which use activated carbons - including fibres, clothes, felts and monoliths. In addition, the use of activated carbon in its granular and powder forms to facilitate usage in liquid and gaseous media is explored. Activated Carbon will make essential reading for Material Scientists, Chemists and Engineers in academia and industry. - Characterization of porosity - The surface chemistry of the carbons - Methods of activation and mechanisms of adsorptio - Computer modelling of structure and porosity within carbons - Modern instrumental analytical methods

Download or read book Studies in Adsorption written by Earl Pettijohn and published by . This book was released on 1918 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Governing Africa s Forests in a Globalized World written by Laura Anne German and published by Routledge. This book was released on 2009-12-01 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many countries around the world are engaged in decentralization processes, and most African countries face serious problems with forest governance, from benefits sharing to illegality and sustainable forest management. This book summarizes experiences to date on the extent and nature of decentralization and its outcomes - most of which suggest an underperformance of governance reforms - and explores the viability of different governance instruments in the context of weak governance and expanding commercial pressures over forests. Findings are grouped into two thematic areas: decentralization, livelihoods and sustainable forest management; and international trade, finance and forest sector governance reforms. The authors examine diverse forces shaping the forest sector, including the theory and practice of decentralization, usurpation of authority, corruption and illegality, inequitable patterns of benefits capture and expansion of international trade in timber and carbon credits, and discuss related outcomes on livelihoods, forest condition and equity. The book builds on earlier volumes exploring different dimensions of decentralization and perspectives from other world regions, and distills dimensions of forest governance that are both unique to Africa and representative of broader global patterns. The authors ground their analysis in relevant theory while drawing out implications of their findings for policy and practice.

Download or read book Byblos in the Late Bronze Age written by Marwan Kilani and published by BRILL. This book was released on 2019-10-07 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Byblos in the Late Bronze Age, Marwan Kilani reconstructs the “biography” of the city of Byblos during the Late Bronze Age, exploring its interactions and development in relation with the contemporary local and macroregional cultural and geopolitical reality.

Download or read book In Vitro Culture of Trees written by J.M. Bonga and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Woody plants provide many challenges to the tissue culturist. Although there are many excellent tissue culture books and manuals available, these are generally strongly biased towards herbacious crops. Consequently, they often do not pay sufficient attention to the problems that specifically apply to in vitro culture of tree species. Culture of the latter often poses problems which are either absent or of lesser significance when culturing herbacious species. When trees in the field are used as explant source, the problems can be especially severe. For example, the physiological condition of the explants is difficult to control because of variation in weather and biotic factors. Furthermore, it is often difficult to obtain explants free of contaminants from field grown trees. Lack of genetic uniformity and maturation are additional problems one often has to deal with when culturing tree cells or tissues. These problems are emphasized in this text. In vitro culture of trees is not viewed in isolation. It is considered in conjunction with breeding, traditional cloning and other common tree improvement techniques. The text discusses theoretical as well as practical aspects of the in vitro culture of trees.

Download or read book Membrane Biological Reactors written by Faisal I. Hai and published by IWA Publishing. This book was released on 2013-11-01 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the MBR market has experienced unprecedented growth. The best practice in the field is constantly changing and unique quality requirements and management issues are regularly emerging. Membrane Biological Reactors: Theory, Modeling, Design, Management and Applications to Wastewater Reuse comprehensively covers the salient features and emerging issues associated with the MBR technology. The book provides thorough coverage starting from biological aspects and fundamentals of membranes, via modeling and design concepts, to practitioners’ perspective and good application examples. Membrane Biological Reactors focuses on all the relevant emerging issues raised by including the latest research from renowned experts in the field. It is a valuable reference to the academic and professional community and suitable for undergraduate and postgraduate teaching in Environmental Engineering, Chemical Engineering and Biotechnology. Editors: Faisal I. Hai, University of Wollongong, Australia Kazuo Yamamoto, University of Tokyo, Japan Chung-Hak Lee, Seoul National University, Korea.