MASS-TRANSFER TO A DROP STREAM FROM A FIELD LIQUID

Mass transfer from a stream of drops falling freely in a stagnant liqu id was investigated. Drop streams were produced by a dripping method a nd by a jet breakup method. Water and isobutanol, mutually saturated, were used as the dispersed the continuous phases. Sodium hydroxide was transferred from isobutanol to water drops which were initially free of solute. The mass transfer resistance is on the continuous phase sid e. The mass transfer coefficient and terminal velocity of drop streams were measured experimentally. The experimental results show that the mass transfer coefficient in the drop stream is affected by the shield ing effect of the previous drops. The experimental data have been corr elated as K-t/U-t(0.5) versus interdrop distance l, a relationship des cribing the effect of the interdrop distance on the mass transfer coef ficient in the continuous phase.