leftover coffee grounds

So, how exactly do coffee grounds become fuel?

A team of MBA and engineering students from the University of Toronto came up with a simple recipe: They made a burnable log by mixing dried-out coffee grounds, paraffin wax, and sugar and baking it in a loaf pan. That’s it!

According to CBC Toronto, the team is currently getting coffee grounds from three participating coffee chains in the local area. But they’ll be looking for a major partnership when they scale up in size.

Right now, the logs can burn for nearly 90 minutes and can be used for cooking, heating — pretty much anything firewood can do. The team hopes to increase the length of burn time in future versions of the product.

Quelle und Weiterführendes