Caractérisation et ajustement de l'hydrophobicité de divers solides poreux PDF Download
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Author: Arsène Hampougouni Yonli
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Book Description
Les solides poreux hydrophobes ont un vaste champ d'application potentiel dans les procédés de dépollution de l'air et des eaux résiduelles. Elles constituent donc une alternative intéressante aux charbons actifs pour l'élimination sélective des polluants organiques, car elles sont facilement régénérables à haute température. Leurs propriétés adsorbantes sont en grande partie liées à leurs indices d'hydrophobicité HI. Différents paramètres influent sur l'indice d'hydrophobicité. Dans le cas des zéolithes, ce sont la structure poreuse, l'acidité des échantillons (rapport Si/Al de charpente), la taille des cristallites, la présence de défauts (nids silanols) ou d'EFAl. Dans le cas des silices mésoporeuses, ce sont le volume poreux, le taux de greffage et la concentration en silanols. L'élimination du phénol est favorisée sur les zéolithes très hydrophobes, celle du chlorobenzène sur les zéolithes peu hydrophobes ; les silices mésoporeuses hydrophobes adsorbent bien le chlorobenzène
Author: Arsène Hampougouni Yonli
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Book Description
Les solides poreux hydrophobes ont un vaste champ d'application potentiel dans les procédés de dépollution de l'air et des eaux résiduelles. Elles constituent donc une alternative intéressante aux charbons actifs pour l'élimination sélective des polluants organiques, car elles sont facilement régénérables à haute température. Leurs propriétés adsorbantes sont en grande partie liées à leurs indices d'hydrophobicité HI. Différents paramètres influent sur l'indice d'hydrophobicité. Dans le cas des zéolithes, ce sont la structure poreuse, l'acidité des échantillons (rapport Si/Al de charpente), la taille des cristallites, la présence de défauts (nids silanols) ou d'EFAl. Dans le cas des silices mésoporeuses, ce sont le volume poreux, le taux de greffage et la concentration en silanols. L'élimination du phénol est favorisée sur les zéolithes très hydrophobes, celle du chlorobenzène sur les zéolithes peu hydrophobes ; les silices mésoporeuses hydrophobes adsorbent bien le chlorobenzène
Author: Ahmed Belasri
Publisher: Springer Nature
ISBN: 9811554447
Category : Technology & Engineering
Languages : en
Pages : 659
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Book Description
This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Author: Agnes Buka
Publisher: World Scientific
ISBN: 1848167997
Category : Science
Languages : en
Pages : 299
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Book Description
The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Author: Jerome V. Moloney
Publisher: Springer Science & Business Media
ISBN: 9780387985817
Category : Business & Economics
Languages : en
Pages : 270
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Book Description
Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.
Author: Canada. Patent Office
Publisher:
ISBN:
Category : Copyright
Languages : en
Pages : 1070
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Book Description
Author: Simon Bensimon
Publisher:
ISBN:
Category : Marketing
Languages : en
Pages : 20
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Book Description
Author: Uri H. Rabin
Publisher:
ISBN:
Category : Flight control
Languages : en
Pages : 108
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Book Description
Author: Wade H. Shafer
Publisher: Springer
ISBN: 9780306341205
Category : Science
Languages : en
Pages : 320
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.
Author: Universidade de Coimbra
Publisher:
ISBN: 9789892021577
Category : Fire weather
Languages : en
Pages : 355
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Book Description
Author: Nicola Bellomo
Publisher: Springer Science & Business Media
ISBN: 0817641025
Category : Mathematics
Languages : en
Pages : 438
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Book Description
Modeling complex biological, chemical, and physical systems, in the context of spatially heterogeneous mediums, is a challenging task for scientists and engineers using traditional methods of analysis. Modeling in Applied Sciences is a comprehensive survey of modeling large systems using kinetic equations, and in particular the Boltzmann equation and its generalizations. An interdisciplinary group of leading authorities carefully develop the foundations of kinetic models and discuss the connections and interactions between model theories, qualitative and computational analysis and real-world applications. This book provides a thoroughly accessible and lucid overview of the different aspects, models, computations, and methodology for the kinetic-theory modeling process. Topics and Features: * Integrated modeling perspective utilized in all chapters * Fluid dynamics of reacting gases * Self-contained introduction to kinetic models * Becker–Doring equations * Nonlinear kinetic models with chemical reactions * Kinetic traffic-flow models * Models of granular media * Large communication networks * Thorough discussion of numerical simulations of Boltzmann equation This new book is an essential resource for all scientists and engineers who use large-scale computations for studying the dynamics of complex systems of fluids and particles. Professionals, researchers, and postgraduates will find the book a modern and authoritative guide to the topic.
