Letteratura scientifica selezionata sul tema "Fractionnement de l’eau"
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Articoli di riviste sul tema "Fractionnement de l’eau":
Trouvé, E., e S. Belloir. "Un procédé de fractionnement innovant au coeur du développement des stations d’épuration durables de demain". Techniques Sciences Méthodes, n. 4 (aprile 2019): 37–44. http://dx.doi.org/10.1051/tsm/201904037.
Kouamé, Thomas Konan, Sorho Siaka, Amian Brise Benjamin Kassi e Yaya Soro. "Détermination des teneurs en polyphénols totaux, flavonoïdes totaux et tanins de jeunes feuilles non encore ouvertes de Piliostigma thonningii (Caesalpiniaceae)". International Journal of Biological and Chemical Sciences 15, n. 1 (21 aprile 2021): 97–105. http://dx.doi.org/10.4314/ijbcs.v15i1.9.
Almeida, Hellen Karine Santos, Matheus Monteiro Ybanez Paiva, Claudio Alberto Gellis de Mattos Dias, Amanda Alves Fecury, Carla Viana Dendasck e Antônio de Pádua Arlindo Dantas. "Analyse technologique des matériaux d’Areal Morro Branco, Porto Grande, Amapá, par fractionnement". Revista Científica Multidisciplinar Núcleo do Conhecimento, 26 marzo 2020, 05–13. http://dx.doi.org/10.32749/nucleodoconhecimento.com.br/environnement/analyse-technologique.
Moretti-Cartaillac, Alain, e Fabienne Héron. "Le verdissement des produits de ressuage : une approche éco-responsable pour le contrôle non-destructif". e-journal of nondestructive testing 28, n. 9 (settembre 2023). http://dx.doi.org/10.58286/28471.
Tesi sul tema "Fractionnement de l’eau":
Richard, Thierry. "Etude infrarouge et isotopique de l’eau adsorbée et confinée". Paris 11, 2006. http://www.theses.fr/2006PA112337.
At relative humidity (RH) lower than 100%, liquid water evaporates, except if adsorbed on solid or “capillarized” inside porous medium. Two techniques were used to study them. Infrared spectroscopy (diffuse reflectance mode) made clear that adsorption and confinement (oxides powders) imply a red-shift of the OH-stretching band. The two situations have been further distinguished using their desorption kinetics behaviour. Second, the liquid-vapor isotopic fractionnation factor () , recorded as a function of RH, showed three main domains. The first (RH < 60%) is characterized by an almost constant , which was interpreted as defining a bi-dimensional film (solid-liquid interactions predominate). From 60% to 80%, water-water intermolecular interactions made sensitive to RH. At 80% RH, capillary condensation in thinner pores (10 nm) showed that this type of water has properties different from the bulk which has a greater value. Semi-quantitative coupling between the results of the two techniques have been tentatively realized, and points to their good consistency
Kilaparthi, Sravan Kumar. "Carbon-based electrocatalysts for CO2 reduction, PET hydrolysate, and water splitting towards value-added products". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILN051.
This study tackles the major global challenges such as CO2 emissions, energy crisis and PET plastic waste mismanagement, which not only pollutes the environment but also contributes to CO2 emissions during incineration. The innovative approach presented in this thesis offers a dual solution, addressing both PET waste and CO2 emissions simultaneously.Two remarkable systems have been explored in this thesis. The first utilized Bismuth oxide carbonate (BOC) functionalized reduced graphene oxide (rGO) for cathodic CO2 electroreduction (CO2RR), while CuCoO on rGO was employed for anodic PET hydrolysate oxidation. Impressively, the anodic CuCoO@rGO catalyst displayed exceptional electro-activity, achieving an outstanding Faradaic efficiency (FE) of 85.7% at 1.5V vs. RHE. Simultaneously, the cathodic BOC@rGO catalyst demonstrated an impressive FE of 97.4% at -0.8 V vs. RHE, facilitating the production of formate from CO2RR. When integrated into an electrolyzer setup, this approach resulted in formic acid production at a low cell voltage of 1.9 V and a remarkable formate FE of 151.8% at 10 mA cm-2.Another system employed a 3D activated carbon felt (aCF) electrode as substrate and Bismuth has been deposited electrochemically on the CF (Bi@aCF) which acts as the cathode CO2RR and nickel cobalt phosphate-deposited carbon felt (NiCoPOx@CF) for the anodic PET hydrolysate oxidation process. This setup achieved a high FE of 94% during CO2RR at -0.8 V vs. RHE, producing formate, and a FE of 95% for anodic PET hydrolysate oxidation to formate at a low potential of 1.5 V vs. RHE. Remarkably, the two-electrode electrolyzer attained an extraordinary FE of 157% to produce formate at a cell voltage of 1.8 V. This breakthrough represents a novel pathway for upcycling PET waste, reducing CO2 emissions, and promoting environmental sustainability.Additionally, our experiments also delved into water electrolysis, where a novel strategy involving Ru embedded in a carbon nitride matrix was proposed. This approach, utilizing a covalent organic framework 2D CIN-1 structure with coordinated Ru+2, resulted in Ru oxide nanoparticles with low-valence Ru sites arranged in nanowires between layers of graphitic carbon nitride after pyrolysis. This material exhibited significantly lower overpotentials for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) compared to benchmark Pt and RuO2 catalysts, demonstrating remarkable catalytic stability. This discovery holds tremendous promise for advancing the field of water splitting and contributing to the development of sustainable energy solutions