Gas Absorption into Liquid Jet Containing Small Solute Bubbles

Abstract

A liquid jet in which small solute bubbles are dispersed through a gas sucking type bubble generator is termed a “liquid jet containing small solute bubbles”. The performance of this liquid jet has been investigated.
In the present work, the specific gas-liquid interfacial area a and the liquid phase mass transfer coefficient K^-_L of this liquid jet were measured; it was found that these were considerably larger than those of packed column, gas bubble column and agitated vessel. Thus it became clear that this liquid jet had a very high performance.
Then, using Kolmogoroff's theory concerning locally isotropic turbulence, the mean diameter of bubble d₀ and the volumetric flow rate Q_G of sucked gas in the bubble generator which are important factors of a were expressed theoretically as a function of the energy loss ε_b per unit volume of liquid in the bubble generator.
Inducing a bubble coalescence model based on a concept of reaction kinetics, bubble coalescence in the liquid jet was analyzed and the relation between a mean volume-surface diameter d_BM of bubble in the liquid jet and ε_b was discussed. These theoretical results were in good agreement with experimental results.