Hydrodynamic and mass transfer characteristics of air-assisted multistage screen liquid-liquid extraction column

his thesis is concerned with the axial dispersion and mass transfer characteristics of air assisted multi-screen liquid-liquid extraction columns. The continuous phase dispersion coefficient was determined from the responses to both the steady-state and transient-state tracer injection techniques. It was found that these response curves could be best represented by the dispersion model (Levenspiel, 1972).;The plate structure, gas flow rate, column diameter, and liquid flow rates of both continuous and dispersed phases were found to have significant effects on the axial dispersion coefficient. The axial dispersion coefficient E;The results of mass transfer studies show that this novel air agitated extraction column is particularly suitable for systems with large interfacial tension. Our results for kerosene-benzoic acid-water show a 700-800% increase in...