Studies of Intensified Small-scale Processes for Liquid-Liquid Separations in Spent Nuclear Fuel Reprocessing
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Beschreibung
The present work focuses on the development of intensified small-scale extraction units for spent nuclear fuel reprocessing using advanced process engineering with combined experimental and modelling methodologies. It discusses a number of novel elements, such as the intensification of spent fuel reprocessing and the use of ionic liquids as green alternatives to organic solvents. The use of ionic liquids in two-phase liquid-liquid separation is new to the Multiphase Flow community, and has proved to be challenging, especially in small channels, because of the surface and interfacial properties involved, which are very different to those of common organic solvents. Numerical studies have been also performed to couple the hydrodynamics at small scale with the mass transfer. The numerical results, taken together with scale-up studies, are used to evaluate the applicability of the small-scale units in reprocessing large volumes of nuclear waste.
The present work focuses on the development of intensified small-scale extraction units for spent nuclear fuel reprocessing using advanced process engineering with combined experimental and modelling methodologies. It discusses a number of novel elements, such as the intensification of spent fuel reprocessing and the use of ionic liquids as green alternatives to organic solvents. The use of ionic liquids in two-phase liquid-liquid separation is new to the Multiphase Flow community, and has proved to be challenging, especially in small channels, because of the surface and interfacial properties involved, which are very different to those of common organic solvents. Numerical studies have been also performed to couple the hydrodynamics at small scale with the mass transfer. The numerical results, taken together with scale-up studies, are used to evaluate the applicability of the small-scale units in reprocessing large volumes of nuclear waste.
Nominated as an outstanding PhD thesis by the University College London, UK Provides insight into the fundamentals of ionic liquid-based extractions for the intensification of liquid-liquid separations in the spent nuclear fuel reprocessing cycle Presents the characterization of important hydrodynamic characteristics using advanced optical techniques (µ-PIV) and scale-up studies Outlines the development of numerical and empirical models for the rapid analysis of two-phase systems Includes supplementary material: sn.pub/extras
Autor*in
Dimitrios Tsaoulidis
Themen in »Studies of Intensified Small-scale Processes for Liquid-Liquid Separations in Spent Nuclear Fuel Reprocessing«
Hydrodynamic characteristics in plug/slug flow Ionic-liquid based extractions Liquid-liquid flow pattern maps Liquid-liquid mass transfer Particle Image Velocimetry (PIV) Spent nuclear fuel reprocessing Uranium(VI) extractions