Intensification of transport processes is carried out with V - ring as turbulence promoter in circular conduit. Diffusion controlled redox couple (Ferri Cyanide-Ferro Cyanide) reaction system has been chosen for the present study. The mass transfer coefficients were evaluated from the measured limiting currents and from the concentrations of the reactant species. Mass transfer coefficient was computed from measured limiting currents and the study continued in terms of geometric parameters such as wire diameter (dw), anterior angle (α1), posterior angle (α2) and velocity (V). Mass transfer coefficients increased with an increase in wire diameter of the wire of the V-ring, and decreased with an increase in anterior angle (α1), and decreased with increasing posterior angle (α2). A maximum augmentation of 6.5 fold was achieved for the promoter with wire diameter (dw=0.00326 m), anterior angle (α1=300), posterior angle (α2=160) for V - ring promoter. Maximum performance index was obtained for the best promoter with the geometric parameters: 0.00326 m wire diameter, 300 anterior angle, 160 posterior angle.