Abstract
The effect of Polyox, Separan and CMC drag-reducing polymers on the rate of electrochemical mass transfer was studied using the cathodic reduction of K3Fe(CN)6 in neutral media at a rotating cylinder cathode. Reynolds number and polymer concentration were varied over the ranges 764–10470 and 10–200 ppm respectively. Under these conditions it was found that the three polymers reduce the rate of mass transfer by a maximum of 47%, 30%, and 17% for Polyox, Separan and CMC, respectively. Mass transfer data in the three polymer solutions was correlated by the following equations: for Polyox: (St)=0.051(Re)−0.3 (Sc)−0.644 (u/u0−0.7 for Separan: (St)=0.065(Re)−0.3 (Sc)−0.644 (u/u0)−0.7 for CMC: (St)= 0.075(Re)−0.3 (Sc)−0.644) (u/u0)−0.5
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