Billions of people lack access to clean drinking water and researchers are constantly searching for cost-effective ways to purify water for rural villages and developing areas. A team of researchers has come up with just such a possible solution using “super sand,” or sand coated in an oxide of graphite.
Using sand to purify water is already an old strategy, but researchers from Rice University in Texas think that by coating it with graphite, the “super sand” will purify water more quickly and effectively than ever before. The BBC reports that coarse sand doesn’t purify as well as fine sand, but fine sand purifies very slowly as water percolates through. The new process could harness the best qualities of both. Read more