OXYGEN ABSORPTION IN BUBBLE AERATION PART 1.

Abstract

1) Oxygen absorption rates in bubble aeration were determined polarographically together with the photographic observations of aeration.
2) Calculating the interfacial area of bubbles, oxygen transfer coefficients which are free from undesirable effects were determined under an assumption that the liquid film resistance is controlling.
3) Using pure oxygen gas, in which no gas film exists, the above assumption was found reasonable in a range of this experimentation.
4) The volume-surface mean and the ascending velocity of bubbles do not differ markedly in a range of air flow rates of these experiments. Thus, the liquid film coefficient seems to be independent of the air flow rate.
5) Effects of organic substances on the liquid film coefficient were studied.