Packing effect on mass transfer and hydrodynamics of rising toluene drops in stagnant liquid

A state-of-the-art review on single drop study in liquid–liquid extraction: Experiments and simulations

“…Results demonstrated that the structured ones have a positive effect on mass transfer and improve mass transfer coefficient. Different sets of structure packing and their location heights in columns were detailed studied in their later study [62]. However, Slater et al [50] found in their studies that Raschig ring packings slowed down the drop velocity and consequently reduced the mass transfer coefficient.…”

Separation of Sulfur-Containing Compounds From Diesel by Oxidation Followed by Solvent Extraction in a Single Drop Column

“…Previous studies regarding the removal of oxidized sulfurcontaining compounds from fuels using the extraction process are summarized in Table 2. In addition, important studies have been done with single drop systems. Azizi and Rezaeimanesh (2016) measured the effect of drop diameter on the mass transfer coefficient of rising drops in a spray and packed column with random and structured packing in a liquid-liquid extraction operation and chemical system of toluene/acetic acid/water with high interfacial tension. Wegener et al (2010) presented a correlation to describe the rising velocity of toluene drops in water with different drop diameters and different nozzle materials based on Grace (1976) semiempirical theory.…”