Behaviour of Microbubble ,nanobubble and finebubble

▶Basic action of microbubble , nanobubble and finebubble.

Microbubble is hardly rise, but stay steadily in water and gradually shrinking by pressure in water. They never combine each other as they got a negative charge of electricity. On the other hand, millibubble is going up to surface straight away in short time.

Microbubble go along flow of water and they may reach all  aspects of objects.

 

         Bubble  less than 50  μm in diameter is shrinking in water. Larger bubble more than 50μm is going up.

 



▶Basic charactalistic

1  Decreasing  buoyancy

As a bubble of diameter is smaller, its buoyancy is decreasing gradually under the condition that diameter of bubble is less than 50 μm. Bubbles go along a flow of water and  could reach all respects of the material. 

2  Extending surface between liquid and gas

As bubble size is smaller and smaller and density of bubbles is increasing, surface between liquid and gas and chemical reaction area extends and gas can merge more efficiently in liquid.

3  Effect of self-pressurizing

 Internal pressure in bubble which is approximately less than 50 micron-meter in diameter is getting higher and higher as diameter of bubble getting smaller  and smaller.  Inside temperature  of bubble  which has already shrunk reaches several thousands degree  and high pressure when it breaks momentarily. Water molecule is resolved and become free radicals at that time .

 The process of microbubble is shrinking changes by difference of various conditions like depth (hydraulic pressure) and the water temperature and amount of  electrolyte. It takes tens of minutes from a few seconds.

4  Electrification

 Internal pressure in bubble which is approximately less than 50 micron-meter in diameter is getting higher and higher as diameter of bubble getting smaller  and smaller.  Temperature  of bubble inside  which has already shrunk reaches several thousands degree  and high pressure when it breaks momentarily. Water molecule is resolved and become free radicals at that time .

Static electricity on the surface of the microbubble adsorbs and dirt in water and plus ion are also adsorbed. This acts help microbubble to be kept in stable.

 


5  Activate cretures

Continuous efficient oxygen supply  activate living thing and  has a significant effect to facilitate the flow of blood.  

6  Effect to dissolve gas and keep it long.

Any gases can be dissolved into water efficiently and keep in high density for a long time. 

Measured by Amply.ltd. Tap water and oxygen gas cylinder use       


Data with air and pure water below.

Dr. inomata of Tohoku Pharmaceutical College

Going up steadily to a bit less than 20mg/l of DO and reachs the top.

Gradually decreasing in  oxygen concentration, but it reaches saturation level in 180 min. but never goes to under the saturation level.


7  Microbubble kill bacteria by free ragical.

 

  Internal pressure of microbubble go up by shrinking in water. When microbubble breaks , temperature momentarily reaches several thousand degrees and several thousand atmospheric pressures. Molecule of H20 is resolved at that time and become free radicals. 

Just before microbubble break( picture in left)


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