Several finebubble generation devices have been created and tested. Those devices can overpass the oxygen saturation conditions in water is less than 20 minutes, with liquid flow rates as low as 200mL/min. Therefore, it is possible to change the typical batch-type generation of finebubbles with a semi-continuous or continuous generation of finebubbles.
The combination of slug flow of water containing finebubbles in small channels has shown that the internal mixing in slug flow has a significant effect in changing the size distribution of bubbles and its gas desorption rate.
The size of finebubbles was measured using Laser Diffraction and Dynamic Light Scattering to measure the size of finebubbles. Preliminary results show a mean size of 250 nm.