Abstract
ABSTRACT Designing and optimizing solvent extraction columns requires careful consideration of the determination and distribution of drop diameters. The size of droplets is influenced by the equilibrium state of breakage and coalescence. The interfacial area in the dispersed phase plays a vital role in determining the reaction rates, mass transfer, and diffusion between two immiscible liquids. To ascertain the variety of droplet sizes and the average size of drops (known as the Sauter mean), one needs to consider a range of factors such as system characteristics, column configuration, agitation speed and pulsation intensity. Although several correlations have been proposed to estimate the mean drop size in solvent extraction columns during steady-state conditions, many of them are only applicable to systems without reactions. This study aims to provide a comprehensive analysis of current literature on the average droplet size and size distribution in pulsed and agitated extraction columns. Additionally, it explores the influence of materials, system characteristics, column structure, and hydrodynamic behavior. Furthermore, an evaluation of existing correlations for Sauter mean drop diameter and size distribution is presented for different pulsed and agitated extraction columns.
Published Version
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