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<dc:title xml:lang="en">Phosphate capture enhancement in peritoneal dialysis process using designed iron oxide nanostructures</dc:title>
<dcterms:alternative xml:lang="fr">Amélioration de la capture des phosphates dans le processus de dialyse péritonéale à l’aide de nanostructures d’oxyde de fer spécifiquement conçues</dcterms:alternative>
<dc:subject xml:lang="fr">Dialyse péritonéale</dc:subject>
<dc:subject xml:lang="fr">Phosphates</dc:subject>
<dc:subject xml:lang="fr">Nanoparticules d’oxyde de fer</dc:subject>
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<dc:subject xml:lang="fr">Synthèse par coprécipitation</dc:subject>
<dc:subject xml:lang="fr">Par voie polyol solvothermale</dc:subject>
<dc:subject xml:lang="fr">Adsorption</dc:subject>
<dc:subject xml:lang="fr">Transport des phosphates</dc:subject>
<dc:subject xml:lang="fr">Titrage calorimétrique isotherme.</dc:subject>
<dc:subject xml:lang="en">Peritoneal dialysis</dc:subject>
<dc:subject xml:lang="en">Phosphates</dc:subject>
<dc:subject xml:lang="en">Iron oxide nanoparticles</dc:subject>
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<dc:subject xml:lang="en">Co-precipitation synthesis</dc:subject>
<dc:subject xml:lang="en">Solvothermal polyol synthesis</dc:subject>
<dc:subject xml:lang="en">Adsorption</dc:subject>
<dc:subject xml:lang="en">Phosphate transport</dc:subject>
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<tef:elementdEntree autoriteExterne="190452072" autoriteSource="Sudoc">Nanoparticules d'oxyde de fer</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Le phosphate est une toxine très dangereuse dans le sang et la dialyse est le seul moyen de l'éliminer du sang des patients souffrant d'insuffisance rénale terminale. Le processus prometteur de la dialyse péritonéale (DP) ne permet pas d'éliminer de grandes quantités de phosphate. Ce travail de thèse a étudié l'ajout de nanoparticules d'oxyde de fer (IONPs) dans le dialysat utilisé pour la DP afin d'améliorer l'élimination du phosphate dans le sang. Des suspensions stables de nanoparticules d'oxyde de fer recouvertes de surfactants ont été synthétisées par différentes méthodes et leur capacité d'adsorption du phosphate a d'abord été mesurée dans le cadre d'expériences en mode batch. D'autres études sur l'élimination du phosphate dans deux dispositifs de dialyse à l'échelle du laboratoire ont confirmé le potentiel des IONPs pour améliorer le transport du phosphate. Ensuite, des expériences de titrage calorimétrique isotherme ont permis de mieux comprendre les interactions entre les phosphates et les IONPs recouvertes de surfactant. Enfin, des paramètres ont été établis pour concevoir un dispositif mimant le processus de DP et les dispositifs ainsi conçues ont confirmé l'amélioration de l'élimination du phosphate lorsque des IONP sont ajoutées au dialysat.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Phosphate is a very dangerous toxin in blood and dialysis is the only way to remove them from blood of patients suffering of end-stage renal disease. The promising peritoneal dialysis (PD) process does not allow removing high phosphate amount. This PhD work has studied thus the addition of iron oxide nanoparticles (IONPs) into dialysate used for PD to enhance phosphate removal from blood. Stable suspensions of surfactant-coated IONPs were synthesized by different synthesis methods and their phosphate adsorption capacity was at first measured in batch experiments. Further phosphate removal studies in two laboratory-scale dialysis set-ups have confirmed the potential of IONPs for enhancing phosphate transport. Then, isothermal calorimetric titration experiments allowed a better understanding of interactions of phosphates with surfactant-coated IONPs. Finally, parameters to design a device mimicking the PD process were established and so designed set-ups confirmed the improved phosphate removal when IONPs are added in the dialysate.</dcterms:abstract>
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