The effect of ultrasound on diffusion through membranes.

The effect of ultrasound and its mechanisms have been studied in the case of diffusion of electrolytes through cellophane membranes as a function of the intensity of the ultrasonic field, the concentration gradient and the irradiation time. The main cause of acceleration of diffusion with ultrasound is the appearance of acoustic microcurrents. Also taking part are: radiation pressure, gravitation, cavitation and acoustic pressure. Values of the diffusion coefficients were calculated from Flick's first law for the case of the stationary processes.