Dissertations / Theses on the topic 'Résines échangeuses d'ions'
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Traboulsi, Ali. "Radiolyse gamma et lixiviation post irradiation de résines échangeuses d'Ions." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4301/document.
Full textThe knowledge of the behavior under irradiation and in presence of water of Ion Exchange Resins (IER) is very necessary to predict their impact on the environment during the storage phase and in a possible deep geological disposal. The IER studied are the MB400 mixed bed resin and its « pure » anionic and cationic components. The experimental strategy used in this work was based on the use of chemometric tools permitting to estimate the effect of the irradiation atmosphere, the dose rate, the absorbed dose and the leaching temperature. The gaseous and water-soluble radiolysis products were analyzed by gas Mass Spectrometry (MS) and Ion Chromatography (IC). The IER generated principally H2g, CO2g and amines for which quantities depended of the resin nature and the irradiation conditions. The analysis of solid irradiated resins was investigated by Fourier Transformed Infrared (FTIR) and Nuclear Magnetic Resonance (13C NMR) techniques. The last ones revealed structural modifications of the IER solid matrix in function of the experimental conditions. Their behavior in presence of water was studied during 143 days by characterization of the organic matter released after their post-irradiation leaching. The kinetics showed that all the water-soluble components were releasing at the first contact with water. The Total Organic Carbon (TOC) quantity released depends, according to the resin nature, either on the dose, either on the irradiation atmosphere. The dose rate has no effect on the degradation and the leaching of the MB400 resin, which behaved differently than its pure components
Traboulsi, Ali. "Radiolyse gamma et lixiviation post irradiation de résines échangeuses d'Ions." Electronic Thesis or Diss., Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4301.
Full textThe knowledge of the behavior under irradiation and in presence of water of Ion Exchange Resins (IER) is very necessary to predict their impact on the environment during the storage phase and in a possible deep geological disposal. The IER studied are the MB400 mixed bed resin and its « pure » anionic and cationic components. The experimental strategy used in this work was based on the use of chemometric tools permitting to estimate the effect of the irradiation atmosphere, the dose rate, the absorbed dose and the leaching temperature. The gaseous and water-soluble radiolysis products were analyzed by gas Mass Spectrometry (MS) and Ion Chromatography (IC). The IER generated principally H2g, CO2g and amines for which quantities depended of the resin nature and the irradiation conditions. The analysis of solid irradiated resins was investigated by Fourier Transformed Infrared (FTIR) and Nuclear Magnetic Resonance (13C NMR) techniques. The last ones revealed structural modifications of the IER solid matrix in function of the experimental conditions. Their behavior in presence of water was studied during 143 days by characterization of the organic matter released after their post-irradiation leaching. The kinetics showed that all the water-soluble components were releasing at the first contact with water. The Total Organic Carbon (TOC) quantity released depends, according to the resin nature, either on the dose, either on the irradiation atmosphere. The dose rate has no effect on the degradation and the leaching of the MB400 resin, which behaved differently than its pure components
Dubois, Marie-Anne. "Dégradation de résines échangeuses d'ions par oxydation par voie humide en conditions sous-critiques et supercritiques." Aix-Marseille 1, 1994. http://www.theses.fr/1994AIX11065.
Full textLafond, Emilie. "Etude chimique et dimensionnelle de résines échangeuses d'ions cationiques en milieu cimentaire." Thesis, Dijon, 2013. http://www.theses.fr/2013DIJOS066/document.
Full textIon exchange resins (IERs) are widely used by the nuclear industry to decontaminate radioactive effluents. After use they are usually encapsulated in cementitious materials. However, the solidified waste forms can exhibit a strong expansion, possibly leading to cracking. Its origin is not well understood as well as the conditions when it occurs.In this work, the interactions between cationic resins in the Na+ or Ca2+ form and tricalcium silicate (C3S), Portland cement (CEM I) or Blastfurnace slag cement (CEM III/C) are investigated at an early age in order to gain a better understanding of the expansion process.The results show that during the hydration of a paste of C3S or CEM I containing IERs in the Na+ form, the resins exhibit a transient expansion of small magnitude due to the decrease in the osmotic pressure of the interstitial solution. This expansion, which occurs just after cement setting, is sufficient to damage the material which is poorly consolidated for several reasons: small hydration degree, precipitation of less cohesive sodium bearing C-S-H, heterogeneous microstructure with highly porous zones and lastly clivable crystals of portlandite at the interface between resins and paste.This expansion can be prevented by performing a calcium pretreatment of the resins or by using a CEM III/C cement with a slower rate of hydration than that of Portland cement
Saadati, Ahmad. "Adoucissement des eaux calciques par échange d'ions transmembranaire à travers des membranes homogènes obtenues par greffage radiochimique." Paris 12, 1992. http://www.theses.fr/1992PA120063.
Full textHamdi, Fatima. "Texture et comportement catalytique des résines polystyrène sulfonées." Toulouse, INPT, 1986. http://www.theses.fr/1986INPT022G.
Full textVannoorenberghe, Hélène. "Etude du comportement à long terme des déchets conditionnés dans les résines époxides et/ou polyesters polymérisés." Aix-Marseille 3, 1991. http://www.theses.fr/1991AIX3A002.
Full textZiouani, Abdelhamid. "Désulfatation de l'agar-agar sur résines échangeuses d'ions : application à la fabrication de l'agarose." Toulouse, INPT, 1987. http://www.theses.fr/1987INPT049G.
Full textDumont, Nathalie. "Récupération du césium des lixiviats de catalyseurs usés à l'aide de résines échangeuses d'ions." Lyon 1, 1996. http://www.theses.fr/1996LYO10139.
Full textMasroua, Antoine. "Hydrolyse sur support polymères des oligo et polysaccharides et synthèse de l'hydroxyméthyl-5 furfural." Lyon 1, 1985. http://www.theses.fr/1985LYO10036.
Full textScanlan, Francis Patrick. "Etude de la dégradation thermique en milieu aqueux d'une résine échangeuse d'ions du type cationique forte." Metz, 1990. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1990/Scanlan.Francis_Patrick.SMZ901.pdf.
Full textAnuku, Nicolas. "Valorisation chimique du glycérol : synthèse du glycidol par cyclodéshydrohalogénation des monohalohydrines de glycérol en présence de résines échangeuse d'anions fortement basiques." Toulouse, INPT, 1994. http://www.theses.fr/1994INPT007G.
Full textSuwanporung, Uraïwan. "Décontamination de déchets liquides radioactifs à faible salinité par résines échangeuses d'ions broyées : étude expérimentale par simulation en milieu non radioactif." Aix-Marseille 3, 1990. http://www.theses.fr/1990AIX30051.
Full textBodrero, Sylvie. "Synthèse d'une résine échangeuse d'ions à cinétique rapide sur support polypropylène." Lyon 1, 1989. http://www.theses.fr/1989LYO19008.
Full textChaumeil, Hélène. "Mono N-fonctionnalisation de tétraazamacrocyles : application à la synthèse de nouvelles résines échangeuses d'ions chélatantes." Brest, 1989. http://www.theses.fr/1989BRES2003.
Full textSuarez-Cardenas, Maribel. "Réaction du méthanol sur l'oxyde de propylène : recherche de modèles cinétiques." Toulouse, INPT, 1986. http://www.theses.fr/1986INPT038G.
Full textBachet, Martin. "Modélisation par transport réactif des résines échangeuses d'ions utilisées dans les réacteurs à eau sous pression." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEM001/document.
Full textIn nuclear power plants, the water contained in different circuits is purified by passing through ion exchange resins. Prediction of the performance of these resins is an important help to the plant operators. To this end, the method of reactive transport modeling are well suited and is the basis of the OPTIPUR code that was designed to model the resins. The work presented in this manuscript covers three main aspects. The first one is the integration of a limitation to mass transfer in a ion exchange deep bed, taking into account a specific mobility for each chemical species, in the context of separated calculations for chemistry and transport. This model was shown to reproduce experimental data, without adjustable parameters. The second part of this work deals with the numerical aspects of reactive transport modelling. A method developped by Anderson was used to accelerate the convergence of the chemistry transport coupling in an iterative scheme. Using the information from previous iterations, and without major changes in the code, calculation times were largely decreased, as well as the number of calculations failures. The third topic is ion exchange equilibrium. The basis of a model that takes into account the change in the water content of the resin and its elasticity are described. The interactions between the fonctional groups, the counterions and water are considered as chemical reactions. The corresponding equilibrium constants are fitted to measurements of the water content of the resin at different relative humidity. Finaly, the selectivity coefficients can be calculated and compared to litterature values
Bachet, Martin. "Modélisation par transport réactif des résines échangeuses d'ions utilisées dans les réacteurs à eau sous pression." Electronic Thesis or Diss., Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEM001.
Full textIn nuclear power plants, the water contained in different circuits is purified by passing through ion exchange resins. Prediction of the performance of these resins is an important help to the plant operators. To this end, the method of reactive transport modeling are well suited and is the basis of the OPTIPUR code that was designed to model the resins. The work presented in this manuscript covers three main aspects. The first one is the integration of a limitation to mass transfer in a ion exchange deep bed, taking into account a specific mobility for each chemical species, in the context of separated calculations for chemistry and transport. This model was shown to reproduce experimental data, without adjustable parameters. The second part of this work deals with the numerical aspects of reactive transport modelling. A method developped by Anderson was used to accelerate the convergence of the chemistry transport coupling in an iterative scheme. Using the information from previous iterations, and without major changes in the code, calculation times were largely decreased, as well as the number of calculations failures. The third topic is ion exchange equilibrium. The basis of a model that takes into account the change in the water content of the resin and its elasticity are described. The interactions between the fonctional groups, the counterions and water are considered as chemical reactions. The corresponding equilibrium constants are fitted to measurements of the water content of the resin at different relative humidity. Finaly, the selectivity coefficients can be calculated and compared to litterature values
Benaissa, Mohamed Abel. "Utilisation des échangeurs d'ions dans le traitement des effluents nucléaires." Montpellier 2, 1990. http://www.theses.fr/1990MON20160.
Full textRiad, Abdelwahab. "Hydroxyméthylation des hétérocycles par le paraformaldéhyde en milieu organique faiblement hydraté, catalysée par des résines échangeuses d'ions." Toulouse, INPT, 1989. http://www.theses.fr/1989INPT030G.
Full textVallerand, Raphaëlle. "Adsorption d'acide polygalacturonique et d'acide abiétique sur des silices modifiées, de l'alumine et des résines échangeuses d'ions." Thèse, Université du Québec à Trois-Rivières, 2010. http://depot-e.uqtr.ca/1157/1/030140263.pdf.
Full textSalem, Kheira. "Elimination des nitrates des eaux polluées par les procédés à membranes échangeuses d'ions." Montpellier 2, 1993. http://www.theses.fr/1993MON20059.
Full textPeyrou, Gilles. "Valorisation du glycérol : synthèse et production de monoglycérides purs par condensation des acides gras et du glycidol catalysée par les résines échangeuses d'anions." Toulouse, INPT, 1996. http://www.theses.fr/1996INPT002G.
Full textAbro, Sylvie. "Réactions d'estérification et de transestérification sélectives du glycérol en présence de catalyseurs solides." Poitiers, 1996. http://www.theses.fr/1996POIT2341.
Full textRakotondrazafy, Vony. "Valorisation chimique du glycérol : synthèse du 1-monooléate de glycérol en milieu aqueux, catalysée par les résines échangeuses d'anions." Toulouse, INPT, 1994. http://www.theses.fr/1994INPT053G.
Full textMahmoud, Akrama. "Phénomènes de transfert dans un procédé d'électrodéionisation de solutions diluées de cuivre : étude expérimentale et modélisation." Vandoeuvre-les-Nancy, INPL, 2004. http://www.theses.fr/2004INPL084N.
Full textThe work is devoted to comprehension and modeling, as weIl experimental as numerical, of the electro- deionization on three strong-acid cations exchangers on a pilot at lab scale for copper removal from dilute synthetic solutions of copper simulating rinsing waters issued from galvanic processes. Electrodeionization is a hybrid process based on a combination of ion exchange and electrodialysis. Before apprehending this hybrid process the ~echanisms of transport of ions in the resin bed and the membrane using a kinetic model of J. Janssen et al. Were studied. The operating conditions to implement to optimize the electrodeionization were sought and made it possible to establish the feasibility of this process. The effects of the height of the bed, the cross-linking degree, the density of current and the copper concentration in feed solution were studied. From the experimental results of the electrodeionization, the specific conductivity of the bed was estimated using a model which consists in calculation of the potential fields in the cell by integration of the Laplace equation using FEMLAB TM software
Serres, Véronique. "Les acides gras polyinsaturés : analyse paramétrique et mise au point d'une unité pilote de séparation." Toulouse, INPT, 1993. http://www.theses.fr/1993INPT060G.
Full textBertsch, Klaus. "Les eaux-de-vie d'Armagnac : critères analytiques de la qualité, étude sur le carbamate d'éthyle." Bordeaux 2, 1992. http://www.theses.fr/1992BOR22006.
Full textThis work deals with different aspects of the quality of white Armagnac Brandy : The knowledge of its constitution could be completed by the detection of 27 compounds present at low concentration or at traca level. The influence of different factors such as extraction of the must, elaboration of the wine and conditions of the distillation on the composition of white Armagnac Brandy has been studied. Ethyl carbamate could be appreciably diminushed by passing the white brandy leaving the still onto alimentary anion exchange resins. Overall quality and the constitution of the Armagnac were not affected
Gonin, Anne. "Mise au point d'un procédé de recyclage d'effluents par couplage électrodialyse-échange d'ions : application aux éluats issus de la régénération de résines de déminéralisation de jus sucrés." Montpellier 2, 2000. http://www.theses.fr/2000MON20189.
Full textLeybros, Antoine. "Etude de la destruction de systèmes polyphasiques en milieu eau supercritique." Aix-Marseille 3, 2009. http://www.theses.fr/2009AIX30035.
Full textSpent ion exchange resins (IER) are, hence, radioactive process wastes for which there is no satisfactory industrial treatment. Supercritical water oxidation offers a viable alternative treatment to destroy the organic structure of resins by using supercritical water properties. The reactor used in Supercritical Fluids and Membranes Laboratory is a double shell stirred reactor. Total Organic Carbon reduction rates higher than 99% were obtained thanks to POSCEA2 experimental set-up when using a co-fuel, isopropyl alcohol. Influence of operating parameters was studied. A detailed reactional mechanism for cationic and anionic resins is created. For the solubilization of the particles in supercritical water, a mechanism has been created with the identified rate determining species and implemented into Fluent® software through the EDC approach. Experimental temperature profiles are well represented by EDC model. Reaction rates are hence controlled by the chemical species mixing
Laktionov, Evgueni Viktorovitch. "Déminéralisation de solutions électrolytiques diluées : Analyse comparative des performances de différents procédés d'électrodialyse." Montpellier 2, 1998. http://www.theses.fr/1998MON20088.
Full textMabrouk, Aurélie. "Caractérisation des résines échangeuses d'ions d'intérêt pour les réacteurs à eau sous pression : Application et validation d'un modèle dédié." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2012. http://pastel.archives-ouvertes.fr/pastel-00803356.
Full textPoriel, Ludovic. "Conception et évaluation de nouveaux procédés de séparation zirconium/hafnium : nanofiltration-complexation, extraction liquide/liquide et résines échangeuses d'ions." Lyon 1, 2004. http://www.theses.fr/2004LYO10187.
Full textHumbert, Hugues. "Etude de la sorption des matières organiques naturelles par les résines échangeuses d'ions : intérêt pour la production d'eau potable." Poitiers, 2006. http://www.theses.fr/2006POIT2256.
Full textNatural Organic Matter (NOM) represents through Total Organic Carbon (TOC) a key parameter for the control of drinking water quality. The first objective of this study was to evaluate the efficacy of the Anion Exchange Resin (AER) MIEX® and different other AER for the elimination of Dissolved Organic Carbon (DOC) from a high DOC content surface water. The performances of these AER were compared with those of coagulation/flocculation at laboratory scale as well as pilot scale. The second objective of this study was to determine the impact of AER treatment on the reduction of competition mechanisms between NOM and pesticides for the adsorption on activated carbon and on the reduction of membrane fouling (ultrafiltration). Various analytical tools (fluorescence spectroscopy, size exclusion chromatography, pyrolysis GC/MS (gas chromatography/mass spectrometry)) were used in order to characterize NOM of raw and treated waters. As well as MIEX® resin, whole studied AER proved to be an interesting alternative to coagulation/flocculation for DOC removal. Moreover, the interest of AER lies in its combination with activated carbon for the reduction of competition mechanisms between NOM and pesticides
Alharati, Assma Ahmed. "Élimination du bore contenu dans l’eau de mer par un système hybride de sorption par résines échangeuses d’ions et de microfiltration." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1051/document.
Full textThe maximum concentration suggested by the World Health Organization is 0.3 mg/L. In this study, we investigated a hybrid process for boron removal from water which associates sorption on ion exchange resin and microfiltration, without continuous resin addition. First, fine resins were obtained by grounding and sieving at 40 and 60 µm commercial resins (Amberlite IRA743, Diaion CRB05 and Purolite S108). The resins were then tested in batch to obtain the kinetics and in the hybrid sorption/microfiltration process to measure breakthrough curves and permeate flux. A ceramic microfiltration membrane was used to retain the ion exchange resin in the feed tank and the circulation loop while the boron solution was continuously added and the permeate collected for analysis. The effect of resin dosage, boron initial concentration, transmembrane pressure and membrane pore size was studied. In a second part, the effect of the size of the resin particles on the breakthrough curves measured at the outlet of a column was determined and a comparison between the performances of a column and a hybrid system are proposed. For the Amberlite IRA743 resin, the overall process was tested: reverse osmosis followed by hybrid sorption/microfiltration. The hybrid process was able to re-duce concentration of bacterial and phytoplankton cells thanks to the steric rejection by the microfiltration membrane, suggesting that the same membrane can be used as a pretreatment before reverse osmosis in a desalination plant. In a final part, the experimental isotherms and kinetics are compared with classical models, and the breakthrough curves obtained with a column and with the hybrid sys-tem are modelised. Overall, it is suggested that the hybrid process of ion exchange resin and microfiltration without continuous addition of resin may be a possible technique for boron removal
Hassen-Khodja, Dalila. "Contribution à l'étude de l'électro-extraction des ions cuivriques pour la décontamination des sols : Recherche de systèmes modèles." Montpellier 2, 2000. http://www.theses.fr/2000MON20211.
Full textGressier, Frédéric. "Étude de la rétention des radionucléides dans les résines échangeuses d'ions des circuits d'une centrale nucléaire à eau sous pression." Phd thesis, École Nationale Supérieure des Mines de Paris, 2008. http://pastel.archives-ouvertes.fr/pastel-00004851.
Full textGressier, Frédéric. "Etude de la rétention des radionucléides dans les résines échangeuses d'ions des circuits d'une centrale nucléaire à eau sous pression." Paris, ENMP, 2008. http://pastel.archives-ouvertes.fr/pastel-00004851.
Full textPhysico-chemical quality of fluids flowing through the circuits of nuclear power plants must be maintained in order to limit circuits contamination and to diminish the dose rate associated to shutdowns. Nevertheless, an optimum between limiting liquid waste and limiting the production of solid waste has to be achieved, in the same time that limiting the associated costs. This is achieved by ion-exchange resins contained in purification circuits. A literature review has put in light the advantages and the drawbacks of the major models of interest proposed to simulate the operating of resins. Thus, the non-ideality of the resin phase has been modelled by the regular solution model whereas ion-exchange kinetics has been described by mass transfer coefficients. Selectivity variations of two cation-exchange resins for Co2+, Ni2+, Cs+ et Li+ ions has been demonstrated. This variation depends on the global saturation state of the resin. Moreover, the more the flow rate, the more the ionic leakage and the more the spreading of elution fronts. The implementation of these models in the CHESS and HYTEC codes has enabled to simulate the equilibrium and kinetics experiments so as to parametrize these new models. Finally, the predicted impact of selectivity variations and hydrokinetics has been studied on a few test cases so as to demonstrate the importance of taking into account these phenomena when modelling the operation of ion-exchange resins
Dhoury, Mélanie. "Influence des ions lithium et borate sur l'hydratation de ciments sulfo-alumineux : application au conditionnement de résines échangeuses d'ions boratées." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS014/document.
Full textIn pressurized water reactors, a solution of boric acid, the pH of which is controlled by the addition of lithium hydroxide, is injected in the primary circuit. Boron acts as a neutron moderator and helps controlling the fission reactions. The primary coolant is purified by flowing through columns of ion exchange resins. These resins are periodically renewed and constitute a low-level radioactive waste. In addition to radionuclides, they mainly contain borate and lithium ions. They are currently encapsulated in an organic matrix before being stored in a near-surface repository. An evolution of the process is considered, involving the replacement of the organic matrix by a mineral one.In this PhD study, the potential of calcium sulfoaluminate cements (CSAC) to solidify / stabilize borated resins in the presence of lithium is investigated. These binders have the advantage to form hydrates which can incorporate borate ions in their structure, and their hydration is less retarded than that of Portland cement.An analytical approach is adopted, based on a progressive increase in the complexity of the investigated systems. Hydration of ye'elimite-rich CSAC is thus successively investigated in the presence of (i) lithium salts, (ii) lithium hydroxide and sodium borate, and (iii) lithium hydroxide and borated ion exchange resins. The experimental investigation is supplemented by thermodynamic modelling using a database specially developed for the needs of the study.Lithium ions are shown to accelerate CSAC hydration by decreasing the duration of the period of low thermal activity. The postulated mechanism involves the precipitation of lithium-containing aluminum hydroxide. On the contrary, sodium borate retards CSAC hydration by increasing the duration of the period of low thermal activity. Ulexite, a poorly crystallized mineral containing sodium and borates, transiently precipitates at early age. As long as ulexite is present, dissolution of ye'elimite is strongly slowed down. When sodium borate and lithium hydroxide are simultaneously introduced in the mixing solution, these two mechanisms are superimposed. With a gypsum-free cement, a third process is additionally observed: lithium promotes the initial precipitation of a borated AFm phase which is later converted into a borated AFt phase when hydration accelerates.Finally, based on the achieved results, a cement-based formulation is designed for the encapsulation of borated resins. Its properties fulfill the requirements for a conditioning matrix over the duration of the study
Asdih, Mostafa. "Désacidification des huiles végétales à teneurs variables en acides gras libres par estérification catalysée par des résines cationiques." Toulouse, INPT, 1993. http://www.theses.fr/1993INPT007G.
Full textOwnby, Miles. "Phosphorus removal and recovery from wastewater via nano-enhanced adsorptive media." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/40140.
Full textRapid increases in the world’s population and to-date industrial and agricultural practices have exacerbated the depletion of essential nutrients in today’s society. After years of environmentally lax agricultural and mining processes, society finds itself trapped between increasing nutrient shortage and the increased frequency of harmful algal blooms (HABs) caused by phosphorus leaching into water systems. New technologies that allow for removal and subsequent recovery and reuse of phosphorus from polluted streams is imperative. One such technology is nanoenhanced adsorption, which may allow to produce a valuable nutrient-rich solution upon desorption of the saturated media. This study evaluated the potential of four regeneration chemistries to desorb phosphorus from a commercially available ion exchange resin hybridized with iron-oxide nanoparticles using a Design of Experiments (DoE) approach. Novel regeneration solutions using a KOH/K2SO4 blend and a recovered NH4OH alkaline solution proved to be comparable to the "control" solution of KOH and H2SO4. Among the four regeneration methods studied, using the NH4OH solution shows the highest potential because: i) it is a valorized waste stream, ii) it showed a desorption efficiency comparable to the control solution, and iii) it did not demonstrate any dampening of the resin longevity after five adsorption and desorption cycles. Based on the DoE data, a series of regression models was developed to generate understanding with regard to expected phosphorus concentration from a regeneration process considering the regeneration chemistry, the treatment volume, the rinse speed, and the strength of the alkaline solution. Nutrient-rich regeneration solutions post-desorption show promising for subsequent use as hydroponic fertilizers or precursors for the P fertilizer industry. Future work should include the development of mechanistic process models to gain an even better understanding of the mechanics behind the desorption. Overall, the nano-enhanced adsorptive technology proposes a cost-effective and sustainable solution to the phosphorus problem in wastewater treatment applications across the globe.
Brach-Papa, Christophe. "Analyse fluorimétrique de l'aluminium dans les eaux de consommation : développements méthodologiques spécifiques adaptés à l'automatisation." Aix-Marseille 1, 2002. http://www.theses.fr/2002AIX11019.
Full textDebre, Olivier. "Effets des radiations ionisantes sur les polymères réticulés associés aux déchets nucléaires : apport de la technique HSF-SIMS." Lyon 1, 1997. http://www.theses.fr/1997LYO10170.
Full textAkrour, Laurent. "Membrane échangeuse anionique et application en pile à combustible." Paris, CNAM, 2005. http://www.theses.fr/2005CNAM0493.
Full textThe objective of this study is to produce an anion exchange membrane being able to be used in an alkaline fuel cell with alkaline polymeric solid electrolyte. The quaternaryammonium groups formed by the DABCO and quinuclidine shows a good resistance to thermal degradation. The membranes synthetised from the polyépichlorhydrine, the copolymer polyépichlorhydrine-allyl glycidyl ether and the two preceding amines are crosslinked by thermal and photochemical way. The photocrosslinked membranes have an ionic exchange capacity of 1,3 mèq/g and a conductivity of about 8. 10[puissance]-2 S/cm at 25°C in KOH 2,5M. The interfaces electrode-membranes studied under oxygen and hydrogen, with an half-cell assembly, were optimized and make it possible to produce an alkaaline fuel cell with membranes developing a maximum power of about 100 mW/cm2 under H2/O2 at 25°C and 12mW/cm2 with a methanol-KOH 4M mixture at 25°C
Chalmin, Louis-Andre Odile. "Propriétés réductrices du dithionite de sodium dans des conditions de transfert de phase." Lyon 1, 1985. http://www.theses.fr/1985LYO19061.
Full textComte, Jérôme. "Dosage des radionucléides à vie longue 79Se et 126Sn dans les solutions de produits de fission issues du traitement des combustibles nucléaires." Paris 11, 2001. http://www.theses.fr/2001PA112303.
Full textThe quantification of radionuclides present in waste resulting from the nuclear fuel reprocessing is essential to ensure an optimal management of this waste. This thesis deals with the development of analytical methods for the determination of two long-lived radionuclides: 79Se and 126Sn, in a solution of fission products (FP) exit from nuclear fuel reprocessing. Their determination, by radiochemical method or mass spectrometry, involves selective chemical separations from the others β/γ emitters and from the interfering elements. For 79 Se, a β emitter with a half-life estimated to 10 power 6 years, two techniques , i. E. Precipitation by potassium iodine and separation on ion exchange resins were applied to a solution of FP at COGEMA La Hague. The results showed that only the ion exchange method allows us to obtain a solution sufficiently decontaminated with a significant selenium yield. This separation allows the measurement of the 79Se by electrothermal vaporisation coupled with inductively coupled plasma mass spectrometry. .
Dujardin, Marie-Christine. "Elaboration d'une structure polymère complexante utilisée dans le cadre de la décontamination mercurique des eaux." Lille 1, 1996. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1996/50376-1996-230.pdf.
Full textNeji, Mejdi. "Modélisation chimie mécanique et simulation numérique du comportement expansif de résines échangeuses d’ions enrobées dans une matrice cimentaire." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10106/document.
Full textIon exchange resins (IER) are widely used in the nuclear industry to purge non directly storable infected effluents. IER then become a solid waste which could be stored as any classical nuclear waste. One way of conditioning consists in embedding it into a cement paste matrix. This process raises some concerns regarding the cohesiveness of the composite. Once embedded, the IER might indeed interact with the cement paste which would lead, in some cases, to the swelling of the composite. This thesis has been set up to address this potential issue, with the aim to develop a numerical tool able to predict the mechanical behavior of this kind of material. This work only focuses on the long term behavior and more specifically on the potential degradations of the cement paste /IER composite due to cationic IER
Favre-Reguillon, Alain. "Nouveaux matériaux ionosélectifs : application à l'extraction sélective du césium." Lyon 1, 1996. http://www.theses.fr/1996LYO10036.
Full textAntonetti, Pierre. "Etude physico-chimique de la dégradation thermique des résines échangeuses d'ions d'origine nucléaire : recherche des conditions limitant le transfert de pollution, application aux câbles électriques." Aix-Marseille 1, 1999. http://www.theses.fr/1999AIX11012.
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