Fig. 3: Removal of MPs using bubbles of varying sizes and rising velocities.
From: Advanced nanobubble flotation for enhanced removal of sub-10 µm microplastics from wastewater

a MPs removal efficiency of the three flotation processes (MB-F, MNB-F, and NB-F) at an AlCl3 dosage of 10 ppm. b Bubble size distribution and their theoretical rising velocity in MB-F. c Bubble size distribution and their theoretical rising velocity in NB-F. Data points and error bars represent the mean and standard deviation from two independent experiments.