With the bubbles being generated by a centrifugal multiphase
pump, Lee et al. (2007) reported that they are more cost-effective
than the conventionally applied saturator vessels, besides being
safer and easy to operate. Rodrigues and Rubio (2003) and Rubio
and Zaneti (2009) have measured the bubbles formed by these
pumps in the presence of surfactants. Results showed that a Sauter
mean diameter of 75 m could be attained, configuring microbubbles
(