BUFFALO, N.Y. — It’s known as granular activated carbon, or GAC. Whether deployed in a water treatment plant or the pitcher in your fridge, this highly adsorbent organic material can easily capture ...

Although we've seen some interesting alternatives being developed, for now the most commonly-used water filtration media are silicon gels and activated carbon. These materials can only be used once, ...

A closeup electron microscopy image of activated carbon, like those found in water filters. Credit: Dr. Mark Gale Activated carbon filters have become common household items as water filters in ...