EFFECT OF SURFACE ACTIVE AGENT ON OXYGEN ABSORPTION IN BUBBLE AERATION I.

[摘要] Using sodium lauryl sulfate, the effect of a surface active agent on oxygen transfer rate in bubble aeration was studied experimentally. It was found that the value of liquid film coefficient in bubble aeration was reduced by the addition of small amounts of sodium lauryl sulfate, less than 100 ppm, to about one-fourth of that obtained in the case without the surfactant.This degree of increase of resistance to oxygen transfer was not ascribed directly to an increase of diffusional resistance due to the adsorption of the substance at the air-liquid interface, but principally to a sort of calming action of sodium lauryl sulfate on the oscillation as well as the other complicated motions of bubble surfaces in aeration.

[学科分类] 微生物学和免疫学