Studies of Intensified Small-scale Processes for by Dimitrios Tsaoulidis

By Dimitrios Tsaoulidis

The current paintings makes a speciality of the improvement of intensified small-scale extraction devices for spent nuclear gasoline reprocessing utilizing complex procedure engineering with mixed experimental and modelling methodologies. It discusses a few novel parts, comparable to the intensification of spent gas reprocessing and using ionic beverages as eco-friendly possible choices to natural solvents. using ionic beverages in two-phase liquid-liquid separation is new to the Multiphase move group, and has proved to be demanding, in particular in small channels, end result of the floor and interfacial houses concerned, that are very diversified to these of universal natural solvents. Numerical reports were additionally played to couple the hydrodynamics at small scale with the mass move. The numerical effects, taken including scale-up experiences, are used to guage the applicability of the small-scale devices in reprocessing huge volumes of nuclear waste.

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By Dimitrios Tsaoulidis

The current paintings makes a speciality of the improvement of intensified small-scale extraction devices for spent nuclear gasoline reprocessing utilizing complex procedure engineering with mixed experimental and modelling methodologies. It discusses a few novel parts, comparable to the intensification of spent gas reprocessing and using ionic beverages as eco-friendly possible choices to natural solvents. using ionic beverages in two-phase liquid-liquid separation is new to the Multiphase move group, and has proved to be demanding, in particular in small channels, end result of the floor and interfacial houses concerned, that are very diversified to these of universal natural solvents. Numerical reports were additionally played to couple the hydrodynamics at small scale with the mass move. The numerical effects, taken including scale-up experiences, are used to guage the applicability of the small-scale devices in reprocessing huge volumes of nuclear waste.

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Extra resources for Studies of Intensified Small-scale Processes for Liquid-Liquid Separations in Spent Nuclear Fuel Reprocessing

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2008; Su et al. 2010; Ghaini et al. 2010; Tsaoulidis et al. 2013a; Tsaoulidis et al. 2013b; Sarrazin et al. 2008). A number of investigations have focused on the development of numerical and empirical models to describe the mass transfer for fixed interface location (Kashid et al. 2007a; Raimondi and Prat 2011; Skelland and Wellek 1964). Harries et al. (2003) developed a numerical model during liquid-liquid plug flow to investigate the hydrodynamics within both segments and the mass transfer of dissolved chemical species within and across the segments interface.

Recently, the bis(trifluoromethylsulfonyl)imide anion, [(CF3SO2)2N]− (abbreviated to [Tf2N]−), has become a popular anion choice for synthesizing hydrophobic ionic liquids that are chemically and thermally more robust and of lower viscosity compared to the majority of ILs (Binnemans 2007). e. cation exchange, anion exchange and solvation, depending on the nature of extractant, concentration of counteranion, structure of the ionic liquid and the aqueous phase composition (Dietz and Dzielawa 2001; Wei et al.

2007; Xu et al. 2013). 015) the shear-driven mechanism also contributes to the droplet formation (De Menech et al. 2008). The shear stress acts to tear off the tip of the dispersed phase, whilst the interfacial tension acts to minimize its surface area. Although a T-shaped configuration favours the formation of plug flow, further increase on the flow rate ratio leads to a change on the flow regime and thus parallel flow will be observed. 16 2 Literature Review Fig. 8 A schematic illustration of the break-up process of a plug at the T-junction of the microchannels.

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