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Effect of anionic surfactant (SDS) and electrolyte (NaCl) on bulk nanobubbles. (a–c) Size distribution of bulk nanobubbles generated at various concentrations of surfactant and electrolyte aqueous solution. (d–f) Mean bubble diameter , number concentration and zeta potential bulk nanobubbles generated in surfactant and electrolyte solution at varying concentrations. Error bars represent the standard deviation of at least six measurements.
