What is the rising velocity of micro and nano bubble in water?
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The rising velocity of micro-nano bubbles in water is a critical factor influenced by various forces and characteristics. Micro-nano bubbles exhibit slow rising speeds due to their small diameters, which range between 100nm and 300nm . These bubbles have lower rising velocities compared to macrobubbles, attributed to their larger interfacial area, higher inner pressure, and density . When analyzing the forces acting on bubbles in still water, it was found that for bubbles with a radius less than 500 μm and a rise distance larger than 0.1 m, the effects of added mass force and Basset force on the rise velocities can be neglected . Additionally, a micro-nano bubble generator with a lift of 40-100m was designed to enhance efficiency and energy conservation, indicating improved device running efficiency .
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| Papers (5) | Insight |
|---|---|
Open access•Journal Article 1 Citations | The paper does not directly address the rising velocity of micro and nano bubbles in water. |
| The rising velocity of micro and nano bubbles in water is not addressed in the paper. | |
Open access•Journal Article 5 Citations | The rising velocity of microbubbles (<500 μm) in water is influenced by drag coefficient and dynamic viscosity, neglecting added mass and Basset forces for bubbles >500 μm. |
Patent 05 Feb 2019 1 Citations | The micro-nano bubbles generated have a slow rising speed due to their small diameter of 100nm to 300nm, facilitating efficient non-selective degradation of organic matter in dye wastewater. |
79 Citations | The rising velocity of micro-nano bubbles in water is determined by Stokes' law, with lower velocities due to smaller bubble sizes, enhancing their stability and residence time in water. |
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