Using 7L/min OK Nozzle at a plastic fabricating company
The specific gravity of plastic is larger than water and is negatively charged
In ten minutes, almost 100% plastic powder floated on the water.
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Experiment results
①In ten minutes, almost 100% plastic powder floated on the water.
②Almost 100% powder was separated by floatation. Also, we discovered/found out when stopping the generation of fine bubbles, more than half of the powder sinks back again.
③The plastic powder which stays sinking at the bottom is nearly the size of 1mm.
④The mechanism of floatation is considered to be due to positive-potential substances (organic substances and pollutants) gather around the negative-potential fine bubbles, and negative-potential plastic powder gathers on those positive-potentials.