Fig. 9: Demonstration of the mechanism and performance of NB-assisted flotation.
From: Advanced nanobubble flotation for enhanced removal of sub-10 µm microplastics from wastewater

a Schematic overview of NBs’ properties and the flotation mechanisms by MB-F, NB-F, and MNB-F. b Comparison between our study and existing studies using conventional and enhanced microbubble flotation processes to remove MPs (data acquisition is described in Supplementary Note 1). Green shadow covers data points reported in this work. The inset figure displays data points in a lower removal efficiency range (20–50%).