TRANSPORT PHENOMENA AT THE WALL OF A SHAK ING VESSEL WITH HORIZONTALLY CIRCULATING MOTION

The mass transfer coefficient at the wall of a horizontally shaking ve ssel was measured with the constant potential method using 1N-KOH+0.2N -K-4 Fe (CN)(6) +0.01N-K3Fe (CN)(6) aqueous solution. The average mass transfer coefficient depended strongly on a circulating frequency abo ve the critical circulating frequency for mixing, compared to that bel ow the critical frequency. In the higher circulating frequency range, the shaking vessel had almost the same performance as that for impelle r mixing. In the lower circulating frequency range, the former had inf erior performance to the latter. The local mass transfer coefficient s howed a higher value at higher positions of the vessel wall from the b ottom. The maximum local mass transfer coefficient was observed at the trough of the free surface wave.