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Overall dispersed side volumetric mass transfer coefficients for protein and amino acidswere measured in continuous countercurrent PEG4000/KHP aqueous two-phase systems in a 57mmI.D.packed extraction column.A model for overall dispersed side volumetric mass transfer coefficientswas derived by describing the motion of the drops based upon Navier-Stokes equation combined withthe relationship between mass transfer coefficients and the drop velocity The model provides goodpredictions and can be successfully used in aqueous two-phase extraction.The average relative deviationbetween calculated values and experimental data ranges from 8% to 14%.
Overall dispersed side volumetric mass transfer coefficients for protein and amino acids were measured in continuous countercurrent PEG 4000 / KHP aqueous two-phase systems in a 57 mm I.D.packed extraction column. A model for overall dispersed side volumetric mass transfer coefficients was derived by describing the motion of the drops based upon Navier-Stokes equation combined with the relationship between mass transfer coefficients and the drop velocity The model provides good predictions and can be successfully used in aqueous two-phase extraction. average relative deviation of calculated values and experimental data ranges from 8% to 14 %.