Research Article

Effect of Contaminants on the Gas Holdup and Mixing in Internal Airlift Reactors Equipped with Microbubble Generator

Figure 6

Effect of superficial gas velocity and surfactant concentration on the intensity and characteristic frequency of pressure fluctuations  kPa).
569463.fig.006a
(a) Fluctuation intensity
569463.fig.006b
(b) Characteristic frequency (riser)