The effects of system variables on flow characteristics and mass transfer rate were studied in a rotating impeller column using a ternary system of water （continuous phase）-acetone (solute)-cyclohexane (dispersed phase). The characteristic velocity, Peclet numbers in both phases and mass transfer coefficient between phases were correlated as ;

rm overline U

_o=6.3(10²)(Nd_I)^-2.1Z_c^0.83

rm overline U_c rm L over rm D_c

=1.26N^-1.11d_I^-2.17Z_c^-0.59rmoverline F_c^1.9
rm overline U_d rm L over rm D_d

=20.5N^-0.78d_I^-1.36Z_c^-0.25rmoverline F_c^0.09
rm k_oc rm aL over rm overline U_d

=13.2N^1.33d_I^0.74Z_c^-0.93rmoverline F_c^-0.78