Using bulk acoustic waves for filtering microplastic on polluted water

Microplastic is known as one of the polluted objects on seawater which can contaminate marine biota. In this report, we designed microplastic filters using Bulk acoustic waves. Two speakers were added to the design to create acoustic waves, and three channels were created on the tube where the polluted water flows. The force produced by the wave can separate the microplastic from the polluted water by creating node pressure on the tube, so it presses microplastic particles towards the center of the channel, whereas the clean water on the other two channels. Using this method, the filter can filter all microplastics and have an efficiency of up to 99% for nylon and 95% microplastics.