Scientists at the University of Missouri are tackling the growing problem of nanoplastic pollution, which poses risks to both human health and aquatic ecosystems. These tiny plastic particles, invisible to the naked eye, have been linked to cardiovascular and respiratory diseases in people and disrupt marine environments.
Researchers, led by Piyuni Ishtaweera, have developed an innovative water purification method using water-repelling solvents made from natural ingredients. This technique removes over 98% of nanoplastics from water, offering a promising solution to this environmental issue.
The process involves a designer solvent that absorbs nanoplastic particles from large volumes of water. The solvent, which is non-toxic and sustainable, initially floats on water, mixes to capture plastics and then rises back to the surface, carrying the contaminants.
“These solvents are made from safe, non-toxic components, and their ability to repel water prevents additional contamination of water sources, making them a highly sustainable solution,” Ishtaweera told Show Me Mizzou. “From a scientific perspective, creating effective removal methods fosters innovation in filtration technologies, provides insights into nanomaterial behavior and supports the development of informed environmental policies.”
In future studies, the team aims to understand the solvent's full capacity and explore methods to recycle it for multiple uses. This method has shown success in removing polystyrene-based nanoplastics from both fresh and saltwater.
