
176 Foam Fractionation: Principles and Process Design
only while the bubbles rise in the liquid pool, and the extent of adsorption
on to the surface of a bubble is determined by the gas residence time in the
liquid, which in turn depends on the depth of the liquid pool and bubble
rise velocity. This assumption has been adopted by many other research-
ers who study foam fractionation of proteins (e.g., Bhattacharjee et al.,
1997,2001;Maruyamaet al., 2007; Maruyama et al., 2008).
The gas residence time, τ, is related to column dimensions and operating
parameters via the following equation:
τ=
v
g
(10.1)
where L is the depth of the bubbly liquid ...