Crossflow micro- and ultrafiltration augmented by electric and ultrasonic force fields

An experimental study of field assisted crossflow filtration has shown that electric and ultrasonic fields, either in isolation or in combination, reduce membrane fouling. Particle liquid interfacial phenomena are used to advantage with the imposed fields to remove fouling layers and enhance flux rates. Synergistic effects were observed when the fields were applied simultaneously. Lower crossflow velocities can be utilised which implies that pumping costs, heat transfer in recirculation loops, and the degradation of shear sensitive streams can be reduced.