Literatura científica selecionada sobre o tema "Adsorption et échange d’ions"
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Artigos de revistas sobre o assunto "Adsorption et échange d’ions"
Sayah, Naima, Abdellah Bakhti e Nathalie Fagel. "Étude de l’adsorption du rouge de chlorophénol sur une hydrotalcite calcinée". Revue des sciences de l’eau 30, n.º 2 (22 de janeiro de 2018): 103–12. http://dx.doi.org/10.7202/1042921ar.
Texto completo da fonteHecini, Linda, e Samia Achour. "Coagulation-floculation au sulfate d’aluminium de composés organiques phénoliques et effet de sels de calcium et de magnésium". Revue des sciences de l’eau 27, n.º 3 (15 de dezembro de 2014): 271–80. http://dx.doi.org/10.7202/1027810ar.
Texto completo da fonteSancey, Bertrand, Nadia Morin-Crini, Louis-Fabien Lucas, François Degiorgi, Jean-François Minary,, Pierre-Marie Badot e Grégorio Crini. "La bioadsorption sur amidon réticulé pour enlever des métaux des effluents industriels". 23, n.º 3 (25 de outubro de 2010): 275–87. http://dx.doi.org/10.7202/044689ar.
Texto completo da fonteTeses / dissertações sobre o assunto "Adsorption et échange d’ions"
Pasquet, Paul-Loup. "Couplage de procédés appliqués à la récupération et valorisation de biomolécules d'un effluent résiduaire brassicole". Electronic Thesis or Diss., Strasbourg, 2023. http://www.theses.fr/2023STRAF083.
Texto completo da fonteThe brewing industry has the potential to play a major role in the development of a sustainable bioeconomy by becoming a biorefinery. A brewing byproduct has the potential to replace antioxidant additives in various industries such as food and cosmetics, as it contains high levels of phenolic compounds. In collaboration with a brewery company, researches were conducted to valorizebiomolecules and reuse chemicals and water. Physico-chemical and phenolic composition of the byproduct was characterized. Bio-based phenolic compounds were recovered with (i) ultrafiltration membrane selection for the wastewater clarification, (ii) optimization of coupled ultra-nanofiltration clarification/concentration process with selectivity and fouling mechanisms investigation, (iii) exploration of alternative recovery processes such as resin adsorption, and (iv) performance of a business case study in order to assess economic performances of designed process in an industrial scale
Boucheffa, Youcef. "Adsorption d'oléfines et de paraffines sur la zéolithe 5A". Poitiers, 1997. http://www.theses.fr/1997POIT2302.
Texto completo da fonteGeoffray, Fabien. "Étude et réalisation par échange d’ions sur verre de guides d’onde à fort confinement pour des applications non-linéaires". Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GRENT008/document.
Texto completo da fonteGlass integrated optics is a key enabling technology which applications range from opticaltelecommunications to sensors. The steady improvement of devices performances is sustainedby an increasing functions density and thus smaller waveguides supporting higher powerdensities. In this work we investigate the ultimate performances in terms of confinementand propagation length of the silver/sodium ion-exchanged waveguides fabricated on glasstechnology. In particular, a trade-off between these two features has been highlighted inthe case of nonlinear effects. We then demonstrate that the performances of silver/sodiumion-exchanged waveguides are mainly limited by optical losses introduced by metallic silveraggregates even for buried low-losses waveguides. Hence the waveguides exhibit a damagethreshold for high power densities. To overcome this limitation a major technology changehas been initiate and we present the first results obtained by thallium/sodium ion exchange
Doka, Nassionou Geoffroy André. "Cinétique de formation de coke et régénération de zéolithes EMT et FAU". Poitiers, 1997. http://www.theses.fr/1997POIT2260.
Texto completo da fonteMornard-Pochet, Bernadette. "Adsorption et rétention des tensio-actifs anioniques par une argile kaolinique : application à la récupération assistée du pétrole". Vandoeuvre-les-Nancy, INPL, 1987. http://www.theses.fr/1987NAN10102.
Texto completo da fonteGamon, Jacinthe. "Dopage et interfaces optimisés de semiconducteurs : étude de deux systèmes complémentaires BiCuOS et ZnO". Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066164.
Texto completo da fonteThe emerging domain of printed electronics requires new cheap and non-toxic materials for applications such as logic devices, sensors, displays, thermoelectric and photovoltaic devices. It also requires optimizing the conduction in granular semiconductors. BiCuOS has been identified as a promising p-type semiconductor for such applications. However, its high copper under-stoichiometry, induces an important p-type doping, which is detrimental for its use as a photovoltaic absorber. Moreover, like all chalcogenide based materials, it shows a poor chemical stability during sintering, thermal treatment necessary to enhance transport properties. In order to optimize its properties, solutions must be found i) to control the doping content, ii) to obtain good charge carrier mobilities in thin films. On the one hand, we have explored different kinds of substitutions such as iodine for sulfur or silver for copper, which successfully enabled to strongly reduce the charge carrier density. On the other hand, we have studied the effect of grafting conjugated molecules (terephthalic acid and polythiophene derivatives) onto the surface of a model n-type semiconductor (ZnO) to study their effect on the intergranular transport. Electronic transfer improvement occurs by transfer though a lowered energy barrier formed by the LUMO of the molecules. The formulation of optimized inks using these molecules as additives allowed the thin film deposition of p-n diodes formed with ZnO/BiCuOS. Although no photovoltaic effect has been detected yet, the p-n junctions showed high nonlinear properties and are strongly photosensitive. With this work, we have participated to the elaboration of new sulfides and hybrid interfaces systems for the improvement of semiconductor devices. The development of such hybrid electronic devices through soft chemistry method is a valuable step towards the commercialization of sustainable technologies
Paoli, Hervé. "Étude de la séparation des paraffines en C10-C14 par adsorption sur zéolithe 5A". Lyon 1, 2002. http://www.theses.fr/2002LYO10177.
Texto completo da fonteZghida, Haïfa. "Utilisation de ligno-celluloses cationiques pour la dépollution des eaux : application à la sorption de surfactants et des oxy-anions du chrome". Lyon 1, 2002. http://www.theses.fr/2002LYO10042.
Texto completo da fonteThach, Ut Dong. "Echanges d’anions sur ionosilices : de l'élaboration des matériaux aux études physicochimiques et leurs applications en séparation et catalyse". Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT239/document.
Texto completo da fonteThe objective of this thesis is the development of new anion exchangers based on ionosilica materials. Various materials containing ammonium groups were synthesized by template directed hydrolysis-polycondensation reactions starting from silylated ammonium precursors. Solids displaying different textures, architectures and morphologies were obtained via the modifications of reaction parameters, such as the nature of the used surfactant. Besides the standard structural and textural characterizations (N2 adsorption, XRD, TEM / SEM), we focused on a more detailed physico-chemical analysis of these original and innovative materials. Ionosilicas show an unusually high hydrophilicity compared to classical mesoporous silica or organosilicas of the PMO-type (Periodic Mesoporous Organosilica). Furthermore, the hydrophilicity of ionosilicas can be finely tuned either by the use of various ammonium precursors or the incorporation via exchange of hydrophobic anions. Finally, we used these new anion exchangers for the removal of various anionic species in aqueous media. Our studies show that ionosilicas are highly efficient anion exchanger displaying high capacity for the adsorption of Cr (VI) (up to 2.5 mmol g-1). These materials exhibit also high capacity of iodide combined with high radiolytic stability for radionuclides uptake. Similar results were obtained for organic anionic pollutants, e.g. drugs (diclofénac, sulindac and p-aminosalicylate) and dyes (methyl orange). Besides the high potential of these materials in separation processes, this study gives interesting insights in the materials morphology through the nearly complete accessibility of the cationic sites. All these features make ionosilicas materials of choice for solid-liquid separation processes in water treatment, depollution of industrial wastewater, the nuclear fuel cycle or catalytic support
Gamon, Jacinthe. "Dopage et interfaces optimisés de semiconducteurs : étude de deux systèmes complémentaires BiCuOS et ZnO". Electronic Thesis or Diss., Paris 6, 2017. http://www.theses.fr/2017PA066164.
Texto completo da fonteThe emerging domain of printed electronics requires new cheap and non-toxic materials for applications such as logic devices, sensors, displays, thermoelectric and photovoltaic devices. It also requires optimizing the conduction in granular semiconductors. BiCuOS has been identified as a promising p-type semiconductor for such applications. However, its high copper under-stoichiometry, induces an important p-type doping, which is detrimental for its use as a photovoltaic absorber. Moreover, like all chalcogenide based materials, it shows a poor chemical stability during sintering, thermal treatment necessary to enhance transport properties. In order to optimize its properties, solutions must be found i) to control the doping content, ii) to obtain good charge carrier mobilities in thin films. On the one hand, we have explored different kinds of substitutions such as iodine for sulfur or silver for copper, which successfully enabled to strongly reduce the charge carrier density. On the other hand, we have studied the effect of grafting conjugated molecules (terephthalic acid and polythiophene derivatives) onto the surface of a model n-type semiconductor (ZnO) to study their effect on the intergranular transport. Electronic transfer improvement occurs by transfer though a lowered energy barrier formed by the LUMO of the molecules. The formulation of optimized inks using these molecules as additives allowed the thin film deposition of p-n diodes formed with ZnO/BiCuOS. Although no photovoltaic effect has been detected yet, the p-n junctions showed high nonlinear properties and are strongly photosensitive. With this work, we have participated to the elaboration of new sulfides and hybrid interfaces systems for the improvement of semiconductor devices. The development of such hybrid electronic devices through soft chemistry method is a valuable step towards the commercialization of sustainable technologies
Capítulos de livros sobre o assunto "Adsorption et échange d’ions"
FLAMENT, Julien, Hélène RATINEY e Fawzi BOUMEZBEUR. "Spectroscopie RMN in vivo et imagerie métabolique". In Les enjeux de l’IRM, 243–84. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9113.ch9.
Texto completo da fonte