Nanobubbles are nano-size bubbles with diameters below 200 nanometers that have unique chemical and mechanical properties:environmental footprint challenges.
Nanobubbles have due to their very small size an extremely high surface/volume ratio which intensifies the gas (f.e. oxygen) transfer efficiency. The interchange surface of a volume of nanobubbles of 100 nm is about two thousand times the surface of the same volume of micro bubbles, and tens of millions times compared with normal bubbles. Nanobubbles are stable but have virtually no buoyancy, this is, nanobubbles do not rise through the water as other bubbles.
Nanobubbles in fact can remain suspended in water for several days, even months. Consequently injected gas can operate for a significant longer time. Increase water´s gas holding capacity by up to 20% compared with micro bubbles – super saturation.
Electrostatically charged nanobubbles repel each other instead of merging together, ensuring excellent mixing properties of gas in a liquid. Finally, one of the most interesting property of the Nanobubbles is their ability to generate highly reactive free radicals and the enhancement of hydroxyl radicals formation, what enable Nanobubbles remove organic materials in a very rapid and efficient way.