rdsd1124 t1_irqi06t wrote on October 10, 2022 at 7:23 AM

Reply to comment by PerspectivePure2169 in How fast do bubbles rise in water? by crazunggoy47

At ambient temperature and pressure too high of an energy barrier exists for the dissolution of the bubble's contained gas. This is b/c small bubbles have a large internal pressure (scales w/ 1/r) and a high chemical potential, just like bernpfenn mentioned. Here's a cool paper showing the math behind this (doi.org/10.1021/acsomega.0c05384)

u/bernpfenn would probably know better if a more updated source exists.

bernpfenn t1_irsg3hi wrote on October 10, 2022 at 6:10 PM

Immediate benefits of nano-bubble aeration

Saturates water with up to 79,000x more oxygen than traditional aeration

Can remain within the water column for 2-3 months
Sustains the rapid growth of beneficial bacteria and desirable microbes

Prevents accumulation of anaerobic bottom muck and sediments

Helps reduce the impact of nutrients responsible for fueling weeds and algae

Provides cyanotoxin control as demonstrated in laboratory settings

bernpfenn t1_irsorug wrote on October 10, 2022 at 7:09 PM

>oi.org/10.1021/acsomega.0c05384

That was a nice dive into the theory.
In essence, to dissolve gas into liquids, smaller bubbles have a longer time in contact with the liquid due to the mentioned stability and surface in contact with the liquid multiplied with the time.

Size, there are nanobubble generators with 1000 GPM water flow. These generators require 100 psi gas pressure and 3.3 m3 gas per hour.