Auswahl der wissenschaftlichen Literatur zum Thema „Séparation du CO₂“
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Zeitschriftenartikel zum Thema "Séparation du CO₂"
Delprat-Jannaud, Florence. „Le captage et le stockage du CO2“. Reflets de la physique, Nr. 77 (Februar 2024): 78–85. http://dx.doi.org/10.1051/refdp/202477078.
Der volle Inhalt der QuelleGeoffrion, Karine. „Re-chercher l’amour transnational“. Emulations - Revue de sciences sociales, Nr. 18 (28.03.2017): 63–76. http://dx.doi.org/10.14428/emulations.018.004.
Der volle Inhalt der QuelleRouyer, Véronique, Amandine Baude, Alexandra Biargues-Joubert und Manon Monribot. „Être co-parents après la séparation conjugale : approche psycho-sociale et développementale des expériences des parents et des beaux-parents“. Cahiers critiques de thérapie familiale et de pratiques de réseaux 61, Nr. 2 (2018): 213. http://dx.doi.org/10.3917/ctf.061.0213.
Der volle Inhalt der QuelleGruber, Eberhard. „Équivocité du don et archi-éthique. Interroger avec Jacques Derrida“. Études littéraires 31, Nr. 3 (12.04.2005): 99–120. http://dx.doi.org/10.7202/501248ar.
Der volle Inhalt der QuelleMcWhinney, Edward. „The International Court as Emerging Constitutional Court and the Co-ordinate UN Institutions (Especially the Security Council): Implications of the Aerial Incident at Lockerbie“. Canadian Yearbook of international Law/Annuaire canadien de droit international 30 (1992): 261–72. http://dx.doi.org/10.1017/s0069005800005129.
Der volle Inhalt der QuellePaisana, João. „Discurso Científico e Poético na Filosofia de Aristóteles“. Philosophica: International Journal for the History of Philosophy 5, Nr. 9 (1997): 77–93. http://dx.doi.org/10.5840/philosophica1997595.
Der volle Inhalt der QuelleOuellet, Pierre. „Seul ensemble. Au sujet du poème“. Dossier 27, Nr. 1 (03.10.2006): 12–20. http://dx.doi.org/10.7202/201578ar.
Der volle Inhalt der QuelleBourgade, Ménard. „Séparations et transferts dans la hiérarchie polynomiale des groupes abéliens infinis“. MLQ 47, Nr. 4 (November 2001): 493–502. http://dx.doi.org/10.1002/1521-3870(200111)47:4<493::aid-malq493>3.0.co;2-s.
Der volle Inhalt der QuelleGarcia, Jeanne. „Poster - « Archives, mémoires et identités métisses ». Une exposition virtuelle réalisée dans le cadre du projet de recherche « Résolution-Métis » aux Archives de l’État à Bruxelles“. C@hiers du CRHIDI, 2023. http://dx.doi.org/10.25518/1370-2262.1582.
Der volle Inhalt der QuelleDJEDI, Hadjer, und Azeddine BELAKEHAL. „THE HERITAGE ATMOSPHERE TO THE TEST OF APPROPRIATION : CASE OF THE KASBAH OF ALGIERS“. Bulletin de la Société Géographique de Liège, 2023, 285–308. http://dx.doi.org/10.25518/0770-7576.7009.
Der volle Inhalt der QuelleDissertationen zum Thema "Séparation du CO₂"
Charmette, Christophe. „Membranes en poly(oxyde d'éthylène-co-épichlorhydrine) pour la séparation du CO2 : relation structure-propriétés de transfert“. Montpellier 2, 2007. http://www.theses.fr/2007MON20018.
Der volle Inhalt der QuelleBidault, Xavier. „Etude par modélisation des nanoparticules formées par séparation de phase dans les verres dopés terres rares“. Thesis, Angers, 2015. http://www.theses.fr/2015ANGE0021/document.
Der volle Inhalt der QuelleOptical fibers with tailored spectral response are doped with luminescent ions, rare-earth ions (re), embedded in nanoparticles (np) formed in situ in silica glass through a phase separation process. This engineering requires to understand the relation between the np composition and the re environment. In molecular dynamics, the existing interatomic potentials fail to reproduce the phase separation as experimentally observed. The system xmgo-(1-x)sio2 exhibits a domain inside of which two mixed phases coexist, mg-rich either si-rich. Such a phase separation can only be modeled by an interatomic potential that takes into account bond ionicity, and the transferability isEnabled here by the adaptation of oxygen charges according to the local environment. This adaptive model allows for the 1st time to track the formation of amorphous np of few nanometers. Mixed and mg-rich, they separate from a si-rich matrix. The re doping (er3+ or eu3+) shows that re environment depends on the size of the containing np: the bigger it is, the more the proportions of embedded re and mg increase. Thus, this mg-rich environment enables re ions to increase their oxygen coordination and to no more aggregate to each other to satisfy this natural trend. A simulation of the high-temperature drawing of silica-glass confirms the existence of an anisotropy in optical fiber, explained by the persistent orientation that small silica rings acquire in this fiber, and manifests itself by an elastic anisotropy. The nontrivial effects induced on np by these extreme conditions of temperature and stress can be studied later. The crystal-field model can be used to correlate the changes of the re environment with their spectral response
Elgendi, Ayman Taha. „Préparation et étude de Membranes Asymétriques Polyalcoxyétherimides (PEI) pour la séparation de composés organiques de l'eau“. Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL046N/document.
Der volle Inhalt der QuelleThe work aimed to prepare co-polyalkylether-imide (PEI) asymmetric membranes in order to get high flux water selective polymeric membranes suitable for the separation of organic molecules from aqueous mixtures by membrane processes. The separation of liquid mixtures (i.e. toluene – heptane, water – ethanol and low concentrated organic solute in aqueous solutions) was studied by pervaporation (PV) and by nanofiltration (NF) using homemade integrally skinned asymmetric PEI membranes. These membranes were prepared under controlled experimental conditions from DMF-H2O solutions of the corresponding polyamic acid (PAA) with respect to the ternary phase diagram; after the wet phase inversion in a water bath, the PAA membranes were imidized by thermal treatment. The membrane physical properties (IR, TGA) were characterized and the related morphologies, recorded by SEM, were used to optimize the asymmetric membrane preparation to improve the separation properties by tuning the thickness of the dense top layer. The performances of the pervaporation and nanofiltration separations were examined in the light of the influence of three sets of parameters, i.e. membrane elaboration parameters (dope composition, inversion bath temperature), experimental permeation conditions (temperature, applied pressure) and solute molecular properties (molecular weight, radius, polarity). The PV results showed that tight asymmetric PEI membranes could well be obtained, giving rise to a molecular selectivity in agreement with the solution-diffusion model. The NF results obtained with diluted organics in water (≈500ppm) have shown that the degree of rejection of the organic solutes was strongly linked to the PEI elaboration conditions and to the solute properties. The molecular cutoff values (MWCO) of the membranes were determined with a series of polyethyleneglycol (400 < Mw (g/mole) <6000) for an applied NF pressure up to 10 Bar; it was shown that the PEI membrane MWCO could be ranged between 400 and 1000g/mol at 30°C. It was also found with some PEI membranes that high permeation fluxes together with good separation selectivity could be obtained leading to interesting performances compared to literature data. Thus, it is expected that the development of these new asymmetric block copolyimide rubbery membranes might give rise to high performance membrane systems for applications in liquid-liquid separations, in particular in nanofiltration separations
Charbonneau, Luc. „Séparation et analyse du ⁶⁰Co et du ⁶⁰Ni par spectrométrie de masse pour la datation de sources de radio-cobalt“. Master's thesis, Université Laval, 2012. http://hdl.handle.net/20.500.11794/23354.
Der volle Inhalt der QuelleWang, Di. „Ιnnοvative cοmpοsite pοlymer materials fοr CΟ2 separatiοn“. Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMIR09.
Der volle Inhalt der QuelleCurrently, the emission of CO₂, which is the primary contributor to global warming, is increasing at an alarming rate. Consequently, there is a growing global need for cutting-edge technologies that can effectively separate and capture CO₂. In the present work, a series of PSF/IL and PES/IL composite membranes for CO₂ separation were investigated. Six ILs ([Meim][TFSO₃], [Vim][TFSO₃], [Meim][Tf₂N], [Vim][Tf₂N], Li(DOBA)[Tf₂N] and Li(HDA)[Tf₂N]) were synthesized successfully and characterized by FT-IR, 1H NMR, TGA and DSC. Composite membranes with different IL loadings were fabricated by solution casting method and exhaustively studied by FT-IR, TGA, DSC, SEM, F-mapping, surface energy, tensile tests, and gas permeation (CO₂, N₂ and O₂). Under 25°C and 4 bar, PES/10[Vim][Tf₂N] membrane showed a CO₂ permeability of 1.92 Barrer with improved CO₂/N₂ and CO₂/O₂ selectivities of 20.4 and 6.1, respectively
Mohd, Shafie Zulfida Mohamad Hafis. „Élaboration de membranes composites à fibres creuses à base de poly-4-méthyl-1-pentène et polydiméthylsiloxane comme couche intermédiaire revêtues d’une couche sélective de polyimide P84 pour la séparation de N₂/CO₂ et CO₂/CH₄“. Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0212.
Der volle Inhalt der QuelleComposite membrane structures are inevitable for the next step of mixed matrix membrane development as the commonly used asymmetric membrane design would mean majority of the fillers to be wasted in the bulk porous substrate layer. In this research, the possibility of using poly(4-methyl-1-pentene) (PMP) as substrate – gutter layer in composite membrane was compared with commonly used polydimethylsiloxane (PDMS) as gutter layer, supported on lithium chloride (LiCl) modified polyethersulfone (PES) porous substrate of varying surface pore architectures. Composite PES/PDMS was able to obtain permeance as high as 26.6 ± 2.6 GPU for N2 and 354.4 ± 27.9 GPU for CO2 at about 1 µm minimum coating thickness. Nevertheless, this value is lower than asymmetric dense skin PMP membrane at 84.6 ± 6.2 GPU for N2 and 607.3 ± 31.3 GPU for CO2. Despite that PDMS has intrinsic permeability far higher than PMP, PES/PDMS composite suffers from solution intrusion & geometric restriction problem at its dense – substrate interface, which reduces its permeance efficiency as low as only 4% of its supposedly ideal permeance, at low coating thickness. It is further elucidated that substrate surface uniformity also significantly affects the resulting composite permeance. In comparison, asymmetric PMP with thin dense surface layer was noted to be advantageous as the substrate – gutter layer as it mitigates the interfacial problem noted earlier for composite membranes while still being highly permeable to minimize resistance. Hence, N2/CO2/CH4 gases were chosen as the model permeants for further composite fabrication with P84 polyimide (PI) as selective layer. Nevertheless, low surface energy of PMP limit its compatibility to form a composite layer. However, it was noted that PMP is compatible to form a bilayer through dip coating with P84 PI, without the need for pre-treatment. Hence, P84 PI of various concentration was dip coated at 5 mm/s onto PMP-based dense skin hollow fiber membrane and tested for gas permeation performance. Results showed that ideal selectivity as high as 42.36 ± 19.08 for CO2/CH4 and 18.55 ± 6.06 for CO2/N2 was achieved at 14 wt.% P84 PI coating. Nevertheless, despite of PMP’s resistibility to the harsh N-methyl-2-pyrrolidone (NMP) solvent used for P84 PI solvation, introduction of P84 PI at low concentration (2 – 10 wt.%) damages the thin, dense skin layer of the PMP’s membrane surface which jeopardize the composite’s separation performance. It is hypothesised that P84 PI’s shrinkage during drying teared the underlying PMP layer which caused this degradation. Hence, there exist a minimum P84 PI polymer concentration in which a defect free selective layer can be made (which is at about 14 wt.%). At this concentration, dip coating speed can be manipulated to obtain a thinner defect-free selective layer suitable for composite membrane fabrication, although dewetting of the coating solution still occurred and magnified as the coating thickness is reduced
Soufi, Kechaou Emna. „Bioréacteur enzymatique couplé à l’ultrafiltration pour la valorisation des co-produits issus des industries de la pêche : application à la seiche Sepia officinalis“. Nantes, 2011. http://www.theses.fr/2011NANT2065.
Der volle Inhalt der QuelleThis work is conducted in the framework of cuttlefish Sepia officinalis by-products up-grading from conditioning industries. It concerns the implementation of the enzymatic hydrolysis and the membrane separation processes to obtain valuable compounds such as peptides and lipids. The techniques used in this study belong to « clean technologies », environmentally sound involving moderate investment and low energy consumption. Hydrolysis of cuttlefish viscera had been carried out in two steps. The first one had objective to determine the efficiency of the enzymes on the matrixes investigated as well as the study area. Once the enzyme had been chosen, the second step was to optimize enzymatic hydrolysis using experimental designs, in order to obtain the highest small peptides recoveries the soluble phase and an antimicrobial activity. The fractionation on the protein hydrolysate according to the charge upon ion exchanging columms allowed determining the ionic profile of the antimicrobial peptides. Membrane fractionation (ultrafiltration) was then used as a second lever to act (i) on size distribution of peptides and (ii) on the activity level of the hydrolysates. First, small-scale fractionation was carried out on polyethersulfone and regenerated cellulose membranes with molecular weight cut-offs ranging from 1000 to 100 000 Da. Then, an scaling-up methodology was investigated by ultrafiltration of the hydrolysate on a pre-industrial pilot plant. The originality of this PhD work is (i) the enrichement of cuttlefish viscera hydrolysates with valuable compounds such as essential amino acids and the enhancement of the antimicrobial activity and (ii) the possibility to up-scale enzymatic hydrolysis and ultrafiltration integrating them in the conception of a complete industrial process
Dumay, Justine. „Extraction de lipides en voie aqueuse par bioréacteur enzymatique combiné à l'ultrafiltration : application à la valorisation de co-produits de poisson (Sardina pilchardus)“. Nantes, 2006. http://archive.bu.univ-nantes.fr/pollux/show.action?id=46838cde-7c1f-4368-88fe-72e9950d0bf3.
Der volle Inhalt der QuelleTHE MAIN GOAL OF THIS WORK WAS TO UP-GRADE SARDINE (SARDINA PILCHARDUS) BY-PRODUCTS USING MILD PROCEDURE, ENVIRONMENTALLY SOUND, IN ORDER TO OBTAIN VALUABLE COMPOUNDS INVOLVING MODERATE INVESTMENT AND LOW ENERGY CONSUMPTION. HYDROLYSIS AND ULTRAFILTRATION TECHNIQUES HAVE BEEN INVESTIGATED. FIRSTLY, SELECTED ENZYMES HAVE BEEN CALIBRATED IN ORDER TO DETERMINE THEIR OPTIMAL CONDITIONS WITH A MODEL SUBSTRATE AND TO PERMIT THE COMPARISON BETWEEN THEM. THEN, HYDROLYSIS ON SARDINE HEAD AND VISCERA HAVE BEEN CARRIED OUT IN TWO STEPS. THE FIRST ONE HAD THE OBJECTIVE TO DETERMINE THE ENZYME EFFICIENCY AND THE STUDY AREA. THE SECOND STEP WAS TO OPTIMISE ENZYMATIC HYDROLYSIS USING EXPERIMENTAL DESIGNS. THE AIM OF THIS SECOND STEP WAS TO OBTAIN THE HIGHEST LIPID RECOVERY IN THE LIQUID FRACTIONS USING THE VARIATION OF THE INFLUENTS HYDROLYSIS PARAMETERS SUCH AS TEMPERATURE, HYDROLYSIS TIME AND ENZYME CONCENTRATION. THE SOLUBLE PHASE OBTAINED AFTER THIS OPTIMISED STEP HAVE BEEN FILTERED USING ULTRAFILTRATION TECHNIQUE IN ORDER TO SEPARATE LIPIDS FROM PEPTIDES. LIPIDS FROM SARDINE BY-PRODUCTS HAVE BEEN MAINLY RECOVERED IN THE LIQUID FRACTIONS OF THE HYDROLYSATES. MOREOVER, AQUEOUS FRACTION HAS SHOWN A HIGH CONTENT OF PHOSPHOLIPIDS. W3 FATTY ACIDS REPRESENT AROUND 20% OF THE TOTAL FATTY ACIDS INTO THOSE FRACTIONS. REGARDING VISCERA, WHICH IS A HARDLY CRUSHING MATRIX, THE LIPID EXTRACTION YIELDS HAVE BEEN IMPROVED USING ENZYMATIC TREATMENT COMPARED TO TRADITIONAL EXTRACTION. THE ULTRAFILTRATION TREATMENT OF THE SOLUBLE PHASE HAS ALLOWED, AFTER THE DETERMINATION OF OPERATING CONDITIONS, TO SEPARATE LIPIDS FROM PEPTIDES AND TO CONCENTRATE THE PHOSPHOLIPIDS IN THE RETENTATE
Bureau, Emmanuel. „Propriétés physiques et étude des cinétiques de relaxation à la transition vitreuse pour des polymères à base d'éthylène-co-acétate de vynile“. Rouen, 2004. http://www.theses.fr/2004ROUES019.
Der volle Inhalt der QuelleThis work is placed in the study of molecular dynamics at glass transition for polar polymers. Firstly, we have studied the characterization of few polymer serials. Secondly, we are interested to the study of molecular relaxation in the glassy state and in the glass-forming liquid state. So, we have studied three serials of materials: EVA with different content of VA, EVA hydrolyzed with different reaction time, blends of PVC/EVA. We have determined the glass transition, cristallinity and thermal degradation for each material. These results allow knowing the structure of polymers. In collaboration with chemistry laboratory UMR 6522, we correlated the material structure with the permeation properties. Indeed, these polymers used in packaging for food and good selectivities of these membranes are very interesting. Moreover, three materials (EVA containing 70% in weight of VA, PVC and a blend of these two polymers have been studied for determine the molecular dynamic at glass transition. The glass state has been characterized by Tool-Narayanaswami-Moynihan model, thus permit to understand the structural relaxation in glass. For the glass-forming liquid, we have used the Vogel-Tamman-Fulcher model and Arkhipov model. This last tries to explain all the relaxation phenomena in the glass-forming liquid. In one hand, we demonstrated that this model allow to determine the distribution of cooperative rearranging regions at glass transition in material and the a relaxation cooperativity. In regard to the fragility concept, the energy landscape is good predicted by the Random Walk Model. In another hand, we have demonstrated that the molecular dynamic is strongly correlated at the polarity of materials
Anselmi, Hélène. „Modélisation et évaluation environnementale d’une unité de captage de CO₂ intégrée à un procédé industriel“. Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0080.
Der volle Inhalt der QuelleLimiting carbon dioxide (CO2) emissions is a major global issue, particularly for the energy, chemical and metallurgical industries. To this end, CO2 capture technologies have been developed in recent decades. In this study, we focused on three types of CO2 capture technologies: chemical absorption by MEA, membrane separation and activated carbon adsorption. The CO2 considered is emitted by a coal-fired power station and then directly valorized within a manufacturing process on the same site. The objective of this study was to quantify the environmental benefits of installing a CO2 capture technology in comparison to the current configuration, without CO2 capture. Our approach combined process modeling and life cycle assessment. The methodology adopted was to model the complete system (the power plant, the manufacturing process and the various capture units) using a flowsheeting software (Aspen Plus), then to determine the environmental impacts by LCA. The results show that the MEA chemical adsorption process is strongly penalized by the use of the solvent, both regarding the energy consumption and the environmental impacts. The membrane process exhibits significant environmental impacts, despite a much lower energy consumption, due to the massive use of polymers (membrane materials). Finally, the activated carbon adsorption process has lower environmental impacts than the other two processes in the vast majority of impact categories