Scientists achieve efficiency of more than 98% in removing nanoplastics from water

Recent research from the University of Missouri targets the growing threat of nanoplastics. These particles, smaller than the diameter of a human hair, are invisible yet linked to significant health risks, including cardiovascular and respiratory diseases.

Nanoplastics accumulate in waterways, posing unseen dangers to people and wildlife. Solving this problem requires cost-effective methods to remove these pollutants while ensuring clean water remains.

Innovative Solution Using Water-Repelling Solvents

The scientists at Mizzou developed a liquid-based solution that effectively removes over 98% of nanoplastics. This innovative technique uses water-repelling solvents derived from natural ingredients. According to Piyuni Ishtaweera, the study's lead researcher, "In layman's terms, we're developing better ways to remove contaminants such as nanoplastics from water."

This method not only addresses the pressing issue of nanoplastic pollution but opens avenues for further advancements in water purification technologies.

Process and Future Developments

The strategy involves employing a small quantity of designer solvent to absorb plastic particles from large water volumes. Gary Baker, an associate professor in the Department of Chemistry, explained, "Currently, the capacity of these solvents is not well understood. In future work, we will determine their maximum capacity and explore methods for recycling them."

Initially, the solvent floats on top of the water. After mixing, it can separate, bringing the nanoplastics along. In laboratory settings, researchers can easily use a pipette to extract the contaminated solvent. Baker mentioned plans for scaling this process for larger bodies of water, such as lakes and seas.

Broad Applicability and Sustainability

Ishtaweera highlighted that this method works effectively in both freshwater and saltwater environments. "These solvents are made from safe, non-toxic components. Their ability to repel water prevents additional contamination of water sources, making them a highly sustainable solution," she stated.

The research team conducted tests using five different sizes of polystyrene-based nanoplastics, commonly found in Styrofoam products. Their findings surpassed earlier studies that mainly focused on one size of plastic particles. Such innovations not only explain nanomaterial behavior but also support informed environmental policies.

Earlier SSP reported that fossil fuel industry was blamed for record heat.