Pulsing ultrasound waves could someday remove microplastics from waterways

Colorful particles of plastic drift along under the surface of most waterways. These barely visible microplastics — less than 5 mm wide — are potentially harmful to aquatic animals and plants, as well as humans. Now, a team reports a two-stage device made with steel tubes and pulsing sound waves that removes most of the plastic particles from real water samples.

Source: sciencedaily.com