Dissertations / Theses on the topic 'Extraction liquide-liquide'
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BLONDET, ISABELLE. "Etude des proprietes interfaciales en extraction liquide-liquide." Paris 6, 1991. http://www.theses.fr/1991PA066423.
Full textVansteene, Axel. "Extraction liquide-liquide réactive en microsystèmes à écoulement segmenté." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS438.
Full textThe intensification of liquid-liquid extraction systems has been studied for the screening of new extractants and the optimization of the parameters governing extraction processes (temperature, pH, and concentrations). The aim of this PhD is to understand and develop a model of mass transfer associated to reactive liquid-liquid extraction processes in segmented flow microsystems. Thanks to microfluidic properties, the consumption of reactants is reduced, the specific interfacial area is monitorable, and the diffusive resistance to mass transfer can be minimized. The hydrodynamics of segmented flows were first studied and allowed the determination of reference cartographies for T and cross junctions for two liquid-liquid extraction chemical systems, Eu(III) in [HNO3] = 4 mol.L-1/N,N'-dimethyl-N,N'-dibutyl-2-tetradecylmalonamide (DMDBTDMA) and U(VI) in [HCl]= 5 mol.L-1/tri-n-octylmethylammonium chloride (Aliquat® 336), leading to the proposal and validation of a predictive model in the dripping regime, hence allowing the determination and maximization of the specific interfacial area. Consequently, the study of mass transfer for the Eu(III)/DMDBTDMA system in T junctions lead to the definition of both a new analytical and numerical model for segmented flow in microsystems ensuring a proper description of interfacial kinetics. The numerical model was applied to the implementation of an innovative process for the determination of the liquid-liquid extraction reaction coefficient kf in segmented flow microsystems in both chemical and diffusional regime, on one side, and to the implementation of a process for micro-chip prototyping on the other side
Rey, Julien. "Étude des mécanismes d’extraction synergiques en séparation liquide-liquide." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2016. http://www.theses.fr/2016ENCM0003.
Full textSeparative chemistry is a pillar of technologic development in extraction, separation and selective remediation of metals and molecules. It finds its applications in the fields of electronic, renewable energy, medicine and chemistry, which require more than ever the use of “Strategic Metals”. The liquid-liquid extraction is a separation technique that is involved in hydrometallurgical processes for the recovery of strategic metals from primary deposits, secondary and urban mines.This work is part of global vision of optimization of liquid-liquid extraction processes used in synergy, consisting in understanding the mechanisms underlying the synergy, and generalizing these mechanisms to all synergistic extraction systems. The understanding of these mechanisms underlying synergism aims at predicting and developing new synergistic extractants mixtures.To better understand the driving forces at the origin of synergistic phenomena, a suitable methodology for the characterization of supramolecular structures of extractant in the organic phase was exploited during this thesis work. The use of techniques like Small Angle Neutron / X-ray Scattering X-ray (SAXS /SANS) and interfacial tensiometry was crucial for the understanding of the synergistic mechanisms. A thermodynamical was also proposed to estimate quantitatively the key driving forces involved in the liquid-liquid extraction mechanisms. The application of these keys of comprehension helped to design a new synergistic system for the extraction of rare earths elements from phosphoric medium
Sciolla, Dominique. "Extraction liquide-liquide sous champ électrique. Contacteur à électrodes externes." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 1987. http://tel.archives-ouvertes.fr/tel-00845426.
Full textSciolla, Dominique. "Extraction liquide-liquide sous champ électrique. Contacteur à électrodes externes." Paris, ENMP, 1987. http://tel.archives-ouvertes.fr/tel-00845426.
Full textSciolla, Dominique. "Extraction liquide-liquide sous champ électrique contacteur à électrodes externes /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37609820c.
Full textMasmoudi, Abderrazak. "Recyclage du lithium issu des batteries usagées par extraction liquide-liquide dans un milieu liquide ionique." Thesis, Strasbourg, 2020. http://www.theses.fr/2020STRAE028.
Full textA sustainable supply of lithium is essential for the development of modern electrical devices. These devices are based on lithium-ion batteries (LIB), the key element of these LIB is lithium. Recycling is a strategic axis on which the supply of lithium is based in an environmentally and economically sustainable manner. In this context, during this thesis project, our efforts were directed towards the study of lithium recycling by liquid-liquid extraction (LLE). Ionic liquids (ILs) have been used to replace toxic organic solvents. The present work has two practical and theoretical objectives: (i) the development of a new LLE system for the extraction of lithium by combining extractant and IL and (ii) the understanding of the mechanisms of lithium extraction from aqueous media (acids and bases) in an IL medium with different types of extractants (neutrals and acids). Our results showed that it is relatively difficult to design a LLE system capable of directly extracting lithium from a LIB leachate. For this reason, we proposed to extract lithium at alkaline pH, where most of the cations present in the leachate are already removed. The optimal extraction system under these conditions is that using β-diketone in LI. We have demonstrated that this extraction solvent meets most of the requirements of an ideal system for lithium extraction involving IL
Khani, Mohamed Ammar al. "Commande adaptative multivariable d'une colonne pulsée d'extraction liquide-liquide." Toulouse, INPT, 1988. http://www.theses.fr/1988INPT002G.
Full textHentsch, Marc. "Séparation de protéines par extraction liquide-liquide à l'aide d'une microémulsion /." [S.l.] : [s.n.], 1994. http://library.epfl.ch/theses/?nr=1237.
Full textHund-Huart, Muriel. "Étude des transferts interfaciaux en extraction liquide-liquide sous champ électrique." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 1988. http://tel.archives-ouvertes.fr/tel-00845221.
Full textDuchêne, Pascal. "Modelisation et commande d'un procede de separation par extraction liquide-liquide." Paris, ENMP, 1992. http://www.theses.fr/1992ENMP0379.
Full textHund-Huart, Muriel. "Etude des transferts interfaciaux en extraction liquide-liquide sous champ électrique." Paris, ENMP, 1988. http://tel.archives-ouvertes.fr/tel-00845221.
Full textHund-Huart, Muriel. "Etude des transferts interfaciaux en extraction liquide-liquide sous champ électrique." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37614434z.
Full textBraibant, Bertrand. "Synthèse et étude de systèmes fluorés pour l'extraction liquide-liquide de métaux stratégiques." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT175/document.
Full textA large part of the metals used by the industry is still coming from mines. Some metals, called strategic metals, may encounter a supply risk or even a total depletion of natural resources. They are usually used in dispersive way which make their recovery complicated, costly and energy intensive since they are in unequal amount, with other metal, in ever more complex matrices. Whether for strategic, economic or societal reason, the metal recycling is about to become an important industry in a near future. Hydrometallurgical processes, and liquid-liquid extraction in particular, are a robust technic giving answer to some of the recycling challenge. Our aim was to develop and study some fluorinated system for the extraction and the separation of metal through liquid-liquid approach. The tenability of the fluorinated part of these system allow the study of multiple interaction (complexation or supramolecular ordering) important in a fundamental point of view in liquid-liquid extraction. Physical and chemical properties such as their miscibility allow the development of new processes in the solvent extraction field such as triphasic liquid extraction system. To this end, two series of fluorinated malonamides with various spacer length between the complexing head and the fluorinated moiety were synthetized. The modulation, through the spacer, of the inductive effect of the fluorinated chain on the physical and chemical properties of the extractant and the complexation of the metal was studied. The influence of various extraction parameters such as the concentration in extractant, the acid and the diluent were characterized. The comparison of these malonamides with their hydrogenated homologues was done and the limits of these systems established. A family of trialkylphosphate was developed and apply to a triphasic extraction system. Preliminary results confirm the approach
Neto, Eduardo Lins de Barros. "Extraction liquide-liquide à deux phases aqueuses : systèmes phénol tensio-actifs polyéthoxylés." Toulouse, INPT, 1999. http://www.theses.fr/1999INPT00LG.
Full textDHASKALI, GRIGOR. "Extraction liquide-liquide du palladium(ii) par la lix 63 : aspects thermodynamique et cinetique." Paris 6, 1990. http://www.theses.fr/1990PA066109.
Full textPorhel, Sabine. "Extraction liquide-liquide sur matériaux poreux. Mise en oeuvre et recherche de paramètres influents." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4709.
Full textThis study is falls within the framework of uranium mining. The step more specifically aimed is the solvent extraction during which the uranium is transferred from a lixiviation aqueous solution to an organic phase by a complexation with a tertiary amine (Alamine 336®). The study focuses on this step of separation using a liquid-liquid contact without dispersal guaranteed by an organic macroporous membrane (pertraction). This technology allows the use of phases with close densities. So, uranium and molybdenum extraction, co-extracted industrially by Alamine 336, were studied for various high extractantes molecules concentrations. For that purpose, all the influential physical chemical parameters of the chemical system (distribution curve, viscosity, density, surface tension, infinite diffusion coefficient, etc.) and of the membrane (porosity, size, tortuosity, etc.) are characterized. Pertraction essays on a single hollow fibre, developed within the framework of this study, are performed and the results are modelized by an approach of mass transfer resistances in series. A single adjustable parameter is retained: the diffusion coefficient in organic phase. This modelling allows highlighting the limitations of uranium transfer from the aqueous phase towards the organic phase during the extraction process through the membrane function of chemical system, the flows and the membrane
Haj, Youssef Mouna. "Extraction liquide - liquide et extraction par émulsions appliquées à la purification de l'acide phosphorique vis-à-vis du cadmium." Châtenay-Malabry, Ecole centrale de Paris, 2008. http://www.theses.fr/2008ECAP1108.
Full textYounas, Mohammad. "Modélisation dynamique des contacteurs membranaires pour l'extraction liquide-liquide : experimentation et simulation." Thesis, Montpellier 2, 2011. http://www.theses.fr/2011MON20002/document.
Full textThe current study deals with the dynamic modelling of hollow fiber membrane contactor extraction plant. The objective of the study is to develop a simulation tool in order to optimize the membrane contactors for liquid-liquid extraction in two different applications: aroma and copper extraction from aqueous solutions. Axial-radial stage and single-fiber model of hollow fiber membrane contactor have been proposed based on resistance-in-series model. A separate dynamic model across reservoir has been developed based on macroscopic unsteady state mass transfer balance. Both models are, then, coupled to consolidate into an integrated dynamic model of the membrane-based solvent extraction plant. Experiments have been carried out to verify the reaction mechanism of various solvent extraction systems and to validate the integrated dynamic model. Model has been used to determine the influence of different module configurations, membrane structural para meters, hydrodynamic, transport and operating conditions upon the extraction efficiency and speed of extraction
Tison, Erick. "Caractérisation de la zone de mélange d'un extracteur centrifuge à effet Couette utilisé en extraction liquide-liquide." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL065N.
Full textMESSAOUDI, ABDELKADER. "Extraction liquide-liquide du strontium par le 3-phenyl-4-benzoyl-5-hydroxy-isoxazole. Synergies." Université Louis Pasteur (Strasbourg) (1971-2008), 1993. http://www.theses.fr/1993STR13112.
Full textGamino, Arroyo Zeferino. "Séparation argent-or à partir d'un jus de lixiviation à la thiourée par extraction liquide-liquide." Châtenay-Malabry, Ecole centrale de Paris, 2008. http://www.theses.fr/2008ECAP1065.
Full textThe recovery of gold and the silver from their ores are done in general in two stages: a leaching of the ore followed of one or more stages of separation. The processes of leaching currently use as reactive either mercury or the cyanide. These reagents are particularly polluting for the environment and very toxic for human health. Research of alternative processes was undertaken in the Eighties. A powerful but expensive reagent was proposed: thiourea. The objective of this research is to explore the possibility of coupling leaching by thiourea with a separation by liquid-liquid extraction. A bibliographical synthesis of the processes of mechanisms of leaching by thiourea as well as a complete review of the systems extractants likely to be appropriate were carried out. Preliminary tests provided us to select one original powerful extractive reagent, the Di-(2-ethylhexyl) dithiophosphoric acid (D2EHDTPA). Available commercially only in the metal salt form , it was synthesized and characterized. An exhaustive parametric study of the thermodynamics of extraction of Ag and Au with D2EHDTPA has been investigated. It allows to identify the stoichiometry of the extracted complexes. As extractant has a great affinity for Au and Ag, their separation is carried out with the help of a selective stripping. A diagram of process allowing the separation of two metals and the recycling of thiourea was proposed and dimensioned. The separation of the extracted Ag is done with a stripping step thanks a thiocyanate solution. The addition of a section of washing provided to refine this separation. Finally, Au is stripped with a thiosulfate solution. The awaited purities are higher than 99,90%
Coilhac, Marie. "Etude expérimentale et modélisation d'un procédé de séparation de cobalt et de nickel par extraction liquide-liquide." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLC048.
Full textThis thesis work aims at modelling and optimizing the step of cobalt and nickel separation by solvent extraction, for a hydrometallurgical process. The first stage of the adopted methodology consisted in studying and modelling separately the extraction equilibria of each metal present in the industrial feed solution (cobalt, nickel, magnesium, manganese and zinc) by the phosphinic acid CYANEX® 272 diluted in an inert hydrocarbon mixture. The resulting extraction reactions and their associated equilibrium constants are the basis of a multi-element thermodynamic model that simulates the batch extraction of mixtures of the 5 metals. The next stage of the study consisted in modelling the continuous process of cobalt and nickel separation, based on the multi-element thermodynamic model. This multi-stage process operated counter-currently includes different steps : extraction, scrubbing, cobalt stripping and zinc stripping. In the model developed, the metal concentrations in both phases, the pH in all the stages, and the reagent consumptions are calculated by an iterative method. This simulation tool allowed identifying optimal operational conditions, for which the cobalt extraction yield of 95% is reached with significant caustic soda savings. Then the proposed conditions have been validated through continuous pilot tests
Corne, Florian. "Microfluidique et cinétique de transfert de matière : application à un procédé d'extraction liquide-liquide réactive d'actinide." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0076.
Full textAn innovative microfluidic parallel co-current flow process has been developed to study the mass transfer kinetics of the system uranium(VI)-HNO3 / TBP-TPH. Due to the use of this chemical system in the spent fuel recycling, the kinetics of the uranium(IV) transfer has already been studied and the overall kinetic constant is available. Nevertheless, the chemical kinetic constant has not yet be determine because of the high molecular diffusion resistance at macroscopic scale. Thanks to miniaturization of the studying microfluidic device and the high velocities flows, those molecular diffusions resistances are strongly reduces then the chemical kinetic constant is supposed to be reachable. Our first studies in confocal microscopy confirm a straight liquid-liquid interface across the depth of the micro-channel and along the flow, even at high speed. Extractions experiments have highlighted a strong phase homogenization which get more important has the initial uranium(VI) concentration increase. Moreover, 2D modelling with COMSOL or Scilab confirms the previous observations where the experimental fits are only validated considering the presence of a solute Marangoni phenomenon. In this case and especially at 50 g/L of uranium(VI), the radial velocity generated by the Marangoni effect is high enough to consider that outlets uranium(VI) concentrations are equivalent to the interfacial concentrations. So, we have estimated the chemical kinetic constant of uranium(VI)-HNO3 3 M / TBP-TPH to be near 3.2x10-4 m/s with a first order reaction for the uranium(VI) in chemical mass transfer condition
Hellé, Gwendolyne. "Microsystèmes séparatifs pour l'extraction liquide-liquide des radioéléments dans les protocoles d'analyse." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066658/document.
Full textRadiochemical analyses are necessary to numerous steps for nuclear wastes management and for the control of the environment. An analytical protocol generally includes different steps of chemical separations which are lengthy, manual and complicated to implement because of their confinement in glove boxes and because of the hostile chemical and radiochemical media. Thus there is a huge importance to propose innovative and robust solutions to automate these steps but also to reduce the volumes of the radioactive and chemical wastes at the end of the analytical cycle. One solution consists in the miniaturization of the analyses through the use of lab-on-chip.The objective of this thesis work was to propose a rational approach to the conception of separation microsystems for the liquid-liquid extraction of radionuclides. To achieve this, the hydrodynamic behavior as well as the extraction performances have been investigated in one chip for three different chemical systems: Eu(III)-HNO3/DMDBTDMA, Eu(III)-AcO(H,Na)-HNO3/HDEHP and U(VI)-HCl/Aliquat® 336. A methodology has been developed for the implementation of the liquid-liquid extraction in microsystem for each chemical system. The influence of various geometric parameters such as channel length or specific interfacial area has been studied and the comparison of the liquid-liquid extraction performances has led to highlight the influence of the phases viscosities ratio on the flows. Thanks to the modeling of both hydrodynamics and mass transfer in microsystem, the criteria related to physical and kinetic properties of the chemical systems have been distinguished to propose a rational conception of tailor-made chips. Finally, several examples of the liquid-liquid extraction implementation in microsystem have been described for analytical applications in the nuclear field: U/Co separation by Aliquat® 336, Eu/Sm separation by DMDBTDMA or even the coupling between a liquid-liquid extraction chip and the system of detection which is the ICP-MS
Haddou, Boumediene. "Purification d'effluents par extraction à deux phases aqueuses." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT009G.
Full textTraore, Youssouf. "Perspective nouvelle pour la récupération de l'indium issu des e-déchets par électrodéposition dans les liquides ioniques à température ambiante." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00733947.
Full textBakti, Jos. "Récupération d'acides malique et tartrique par extraction liquide-liquide. Application à la dépollution d'effluents agro-industriels." Toulouse, INPT, 1993. http://www.theses.fr/1993INPT009G.
Full textFACON, SYLVIE. "Contribution a la separation metaux de la mine du platine-metaux communs par extraction liquide-liquide." Paris 6, 1993. http://www.theses.fr/1993PA066088.
Full textSchneider, Hélène. "Récupération des acides des bains de décapage les plus utilisés dans l'industrie par extraction liquide-liquide." Châtenay-Malabry, Ecole centrale de Paris, 2000. http://www.theses.fr/2000ECAP0870.
Full textHorbez, Dominique. "Étude du couplage entre électrolyse et extraction liquide-liquide : application à l'oxydation électrochimique de Ce3+ en Ce4+ en émulsion." Vandoeuvre-les-Nancy, INPL, 1988. http://www.theses.fr/1988NAN10148.
Full textFlores, Moralest Areli. "Extaction liquide-liquide d'acides polycarboxyliques : influence de l'extactant (TBP et TOA) et des diluants actif et inerte." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT006G.
Full textChouai, Assia. "Application des réseaux de neurones à la modélisation et à la commande multivariable des colonnes d'extraction liquide-liquide." Toulouse, INPT, 1999. http://www.theses.fr/1999INPT008G.
Full textBou, Maroun Elias. "Extraction liquide-liquide et solide-liquide des lanthanides par des β-dicétones hétérocycliques et des ligands N-donneurs,libres ou immobilisés sur des silices mésostructurées." Université Louis Pasteur (Strasbourg) (1971-2008), 2004. http://www.theses.fr/2004STR13074.
Full textLiquid-liquid extraction of trivalent rare earths Ln(III) (Ln: La, Eu, Lu), from nitric aqueous media, by the bis-acylpyrazolone 1,12-bis(1'-phényl-3'-methyl-5'-hydroxy-4'-pyrazolyl)-dodecane-1,12-dione (HL-(CH2)10-LH) has been studied. The extraction occurs at lower pH than the extraction by the simple 4-acyl-5-hydroxypyrazoles (HL) and its efficiency increases with the ascending atomic number of Ln (La < Eu < Lu). The presence of a solvating agent of the type 3N-donor, 2,4,6-tri(2-pyridyl)-1,3,5-triazine, TPTZ, induces an important synergistic effect ; TPTZ governs the synergistic order of extraction : La < Lu < Eu. The solid-liquid extraction of Ln(III) by mesostructured silicas doped with the extractants used in liquid-liquid extraction has been also studied. The doped silicas were synthesized at low temperature according to the sol-gel process using cetyltrimethyl ammonium bromide, CTAB, as a templating agent for the porosity (MCM-41 type synthesis). They were characterized by BET analysis of nitrogen isotherms, X-ray diffraction, scanning electron microscopy SEM, transmission electron microscopy TEM and laser granulometry. Doped silicas are destructured compared to lamellar silicas obtained in the absence of extractant ; however, the doped material preserves high specific surface area (990 to 1230 m2. G-1) and remains mesoporous. At low pH, solid-liquid extraction by silicas doped by HL or HL-(CH2)10-LH is more efficacious than liquid-liquid extraction; moreover, it is faster. The europium extraction capacity and the stoichiometry of the complex extracted by HL-(CH2)10-LH are comparable in solid-liquid and micellar extractions. The stoichiometries of the bis-acylpyrazolonates, extracted by the three different techniques, do not only depend upon the technique of extraction used, but depend upon the initial concentrations of the chemical species in each phase too. For europium, with a silica doped by HL-(CH2)10-LH and TPTZ, a moderate extraction synergy is observed. The metal/acylpyrazolonate ratio, in the complex extracted by the silica doped by HL-(CH2)10-LH alone (1:2) Eu(L-(CH2)10-L)(L-(CH2)10-LH), differs from that existing in the synergistic complex (1:3) Eu(L-(CH2)10-LH)3(TPTZ). The europium extraction capacity found in our study is 0. 18 mmol/g which is 200 times more important than those obtained with impregnated silica
Smagghe, Freddy. "Séparation des acides tartrique et malique par extraction liquide-liquide. Valorisation et dépollution des effluents viti-vinicoles." Toulouse, INPT, 1991. http://www.theses.fr/1991INPT040G.
Full textHanine, Hafida. "Récupération de l'acide aconitique dans l'industrie de la canne à sucre par précipitation et extraction liquide-liquide." Toulouse, INPT, 1991. http://www.theses.fr/1991INPT022G.
Full textOuejhani, Ali. "Étude du recyclage du chrome des bains résiduaires de tannage par voie électrochimique et extraction liquide-liquide." Paris, CNAM, 2004. http://www.theses.fr/2004CNAM0478.
Full textIn the industry of leather, the traditional treatment of the tannery waste water (charged out of trivalent chromium) proves to be insufficient and expensive. To cure these disadvantages, we proposed and studied a new approach of treatment and revalorization of the waste baths of tanning by electrochemical oxidation and liquid-liquid extraction. The design of a new process of treatment of these rejections by electrochemical way, requires a realization of an experimentation relating to the electrochemical oxidation of trivalent chromium. The use of the experimental design methodology, allowed us initially, by the implementation of a factorial design split to distinguish the experimental factors most influential on the reaction of electrochemical oxidation of Cr(III) in Cr(VI) in terms of outputs chemical and faradic. In a second study, the experimental results obtained by using the approach of Doehlert, enabled us to establish a mathematical model, whose essential interest is to be able to predict in any point of the experimental field the values of the chemical and faradic yields. The study of the equations of the answers led to the values of the factors which optimized the experimental answers, namely a chemical yield higher than 95% and a faradic yield higher than 50%. It is manifestly known than hexavalent chromium is definitely more toxic than trivalent chromium. The development of a technique of selective extraction of Cr(VI) remains a condition necessary of the success of the process. Thus, we studied the selective extraction of hexavalent chromium and its recovery in a form compatible with its possible recycling in the industry of leather or other industries
CORDIER, PIERRE-YVES. "Separation par extraction liquide - liquide des actinides (iii) des lanthanides (iii) par de nouvelles molecules : les picolinamides." Clermont-Ferrand 2, 1996. http://www.theses.fr/1996CLF21832.
Full textBorrini, Julien. "Séparation actinides (III) / lanthanides (III) par filtration membranaire et par extraction liquide-liquide à l'aide de complexants hydrosolubles." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00911664.
Full textPani, Fatos. "Hydrodynamique et transferts de matiere en reacteurs agites gaz-liquide et gaz-liquide-liquide : application oxydante du cuivre par lix 65n-hs." Paris, ENMP, 1987. http://www.theses.fr/1987ENMP0034.
Full textBascoul, Aimé. "Fluidisation liquide-solide : Etude hydrodynamique et extraction des proteines." Toulouse 3, 1989. http://www.theses.fr/1989TOU30110.
Full textKiriamiti, Kirimi Henry. "Extraction de pyréthrines par le CO2 liquide et supercritique." Toulouse, INPT, 2003. http://www.theses.fr/2003INPT013G.
Full textSolastiouk, Pierre. "Application de l'extraction liquide-liquide au traitement et a la revalorisation d'effluents industriels." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13140.
Full textColombani, Sandrine. "Comparaison de différentes méthodes d'investigation sur les cinétiques de transfert en extraction liquide-liquide : application à l'étude de l'extraction du fer (III) par le TBP." Châtenay-Malabry, Ecole centrale de Paris, 2000. http://www.theses.fr/2000ECAP0680.
Full textCerino, Clelio. "Ιntensificatiοn de la séparatiοn d'émulsiοns par chauffage micrο-οndes : applicatiοn à l'extractiοn liquide-liquide de métaux critiques." Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMIR16.
Full textThis thesis focuses on the application of a microwave heating emulsion separation method to the phase separation of emulsion typical to the critical metal recovery processes. Following a literature review centered around emulsion separation, microwave heating in general, and the intensification of the separation of petroleum-based emulsions by microwave heating, the research work focuses firstly on physico-chemical properties relevant to the phase separation of the studied emulsions, and their evolution with temperature. Surface tension measurements, along with preliminary separation tests, show the important but hardly understood role of surface tension and its time evolution. Emulsion and single phase permittivities are then measured and modeled with equations available in the literature, allowing us to prefigure the penetration depth achievable in such materials with microwaves. The measured permittivities justify employing a laboratory scale, microwave intensified phase separator to observe, with small treatment volume and fluids throughput, the effect of microwaves on emulsion separation. Lastly, we study microwave heating numerically, with COMSOL Multiphysics, first with the aforementioned experimental geometry, then with simpler geometries, presenting problems that could arise, should an industrialization occur. Results obtained with the experimental set-up, as well as the simulations performed allow us to confirm the described method’s interest in the metal recovery context, and to prefigure scale-up. The annexes present further research axis identified during the thesis
Hubert, Hervé. "Complexation des ions trivalents des groupes 4f et 5f par les diamides et utilisation en extraction liquide-liquide." Châtenay-Malabry, Ecole centrale de Paris, 1985. http://www.theses.fr/1985ECAP0037.
Full textFaux-Mallet, Marie-Sabine. "Extraction du gallium(iii) en milieu acide : comparaison des methodes d'extraction liquide-liquide et d'echange d'ions sur resines." Paris 6, 1988. http://www.theses.fr/1988PA066234.
Full textRAKIB, MOHAMMED. "Etude par extraction liquide-liquide du comportement thermodynamique du vanadium (5) dans un systeme biphasique eau-alcool aliphatique." Paris 6, 1994. http://www.theses.fr/1994PA066682.
Full textKOSSIR, ABDELAALI. "Extraction liquide-liquide du zinc(ii) en milieu cyanure. Application a la valorisation des minerais du zinc oxydes." Paris 6, 1991. http://www.theses.fr/1991PA066179.
Full textFaux-Mallet, Marie-Sabine. "Extraction du gallium(III) en milieu acide comparaison des méthodes d'extraction liquide-liquide et d'échange d'ions sur résine /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37613564x.
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