Microplastics are one of the hardest things to remove from water, tiny, everywhere, and traditional filters are expensive and constantly need replacing. Then an 18-year-old came at the problem from a completely different angle.

Mia Heller, a student from Warrenton, Virginia, invented a prototype filtration system that removes roughly 96% of microplastics from drinking water. She was motivated by local reports of PFAS and microplastic contamination, and by watching her mother constantly replace expensive, high-maintenance filter membranes, which pushed her to find a membrane-free solution. Instead of a traditional physical barrier, her device uses a magnetic liquid called ferrofluid: this magnetic oil binds to microplastic particles, which are then pulled out of the flowing water using a magnetic field. Cleverly, the system recycles about 87% of the ferrofluid, making it low-waste and cost-effective. It’s currently a prototype that filters about one liter at a time, but she envisions it one day becoming an affordable, under-the-sink home system.

The timing matters. Microplastic pollution grows worse every year, and researchers have now found these particles throughout the human body, in blood, lungs, and more, and because our bodies don’t clear them well, they accumulate, which is exactly why their effects are being studied so closely. A teenager looked at a problem experts were stuck on and found a genuinely new way through it. That’s the kind of story worth sharing.

Source: Neurolab (Facebook)