LAUSR

Abstract Resonance vibration mitigated membrane fouling during whole milk filtration by submerged membrane system with hollow fibers of polyvinylidene fluoride. Resonance vibration extended the filtration duration (70 kPa) by 54 times, compared with no vibration. Resonance vibration was found more effective for fouling reduction than mechanical vibration, at which module is vibrated mechanically without resonance effect. Fouling reduction performance of resonance vibration was not affected by packing density because every fiber oscillates at resonance vibration. Larger lateral displacement and smaller wave node were favored for fouling reduction. Use of long fiber for filtration decreased the frequency, but increased lateral displacement.