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Abstract
Electrochemical mass transfer was studied in the presence of polyethylene oxide as a drag-reducing agent using the cathodic reduction of K3Fe(CN)6 at a rotating cylinder electrode over a range of Reynolds numbers from 4100—41 000. Solutions containing polymer showed a lowered mass transfer coefficient than that without polymer. Mass transfer data in solutions containing polymers was found to fit the correlation: (St) = 0.475 (Re)−0.3(Sc)−0.644. A comparison was made between the reduction in friction and the rate of mass transfer; it was found that at relatively low (Re) values, the reduction in the rate of mass transfer is higher than the reduction in friction, whilst at relatively high (Re) values, the reverse is true.
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