Filtering Like Nature: Mobula Rays Inspire Next-Generation Water Filtration Systems

Researchers at the Massachusetts Institute of Technology (MIT) have drawn inspiration from the filter-feeding mechanisms of mobula rays to design more efficient industrial water filtration systems. Mobula rays, including manta and devil rays, feed by swimming with their mouths open, allowing water to flow in while plankton is filtered into their gullets and excess water exits through their gills. 

A study published in the Proceedings of the National Academy of Sciences examined the structure of the mobula ray’s mouth, which features parallel, comb-like plates that guide plankton into the digestive tract while allowing water to pass through. The researchers replicated this natural filtration system using 3D-printed plate-like structures to study water flow and particle separation. Their findings demonstrate how the precise arrangement of these plates achieves an optimal balance between permeability (allowing water to flow through easily) and selectivity (effectively filtering out specific particles). 

For researchers conducting similar studies on filtration efficiency, Sterlitech provides the essential tools to test and refine biomimetic filtration concepts. Our cross-flow benchtop systems, along with a range of flat sheet membranes and test cells allow for precise evaluation of water flow dynamics, particle separation, and membrane performance. These systems are widely used in laboratory-scale studies to simulate industrial filtration processes and optimize filtration efficiency. 

Led by MIT’s Anette "Peko" Hosoi, Pappalardo Professor of Mechanical Engineering, and postdoctoral researcher Xinyu Mao PhD ’24, in collaboration with Associate Professor Irmgard Bischofberger, this research highlights how nature’s filtration mechanisms can inspire innovative water treatment technologies. With Sterlitech’s cross-flow filtration systems and specialized membrane testing equipment, researchers can further explore and develop efficient filtration solutions inspired by nature. 

Reference:

1. Massachusetts Institute of Technology. (2024, November 25). To design better water filters, MIT engineers look to manta rays. EurekAlert. https://www.eurekalert.org/news-releases/1066049