The world runs on coffee, which means there’s a lot of used coffeegrounds. One way of making use of them is by incorporating spent coffee grounds in a foam filter that can remove harmful lead and mercury from water. Researchers recently fixed used coffee ground into a special foam, and they found that it could remove up to 99% of lead from water. Such a filter could help provide better access to clean water while making use of wasted coffee grounds.
This article was originally published on September 22, 2016
