Sounds great and it's cool to see young people involved, but part of what makes ferrofluid what it is, is surfactants. These love water as much as they move oil, so much so they can allow the two to mix. So my question is, what is being added to the water? Are the plastics removed the ones we worry about? Not all plastics or even particles are the same or have similar biological impacts.

If this adds extra gunk to my water and only removes particles I'd have excreted anyway, it makes the problem worse not better.

this is exciting but i wouldnt rush to put something like it into my kitchen.

I get about 90% of my microplastics from breathing in people's tire dust. The stuff in water isn't nearly as concerning.

The articles exclusively mentioning how it removes microplastics, begs the question how it removes everything else water filters already handle.