Abstract
To exploit the advantage of obtaining enhanced mass transfer rates in electrochemical processes, in the present study, experiments were conducted in gas-liquid up-flow electrochemical cells in the presence of string of disc promoter internal. Computation of mass transfer coefficients was facilitated by the measurement of limiting currents at the electrodes fixed flush with the inner surface of the perspex tube wall. An equimolar potassium ferrocyanide and potassium ferricyanide solution in the presence of sodium hydroxide supporting electrolyte was used as the liquid phase and nitrogen was used as the inert gas phase. In gas-liquid up flow bubble columns in the presence of string of sphere promoter, the mass transfer coefficients were found to increase slightly with gas velocity, sphere diameter and rod diameter. The influence of liquid velocity and pitch was found to be negligible. The data were correlated using jD factor.
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