Around 200,000 tonnes of used coffee end up in London’s landfills a year. A young man named Arthur Kay, however, knows how to make use of the coffee grounds.
First, his factory takes out the oils from the used coffee grounds. The oils are basically biodiesel, which smells of coffee. The coffee grounds without the oils are then turned into little logs.
You can use these logs instead of wood in your fireplace. 25 cups of coffee make one log. The coffee logs burn hotter and longer than wood.
Key’s factory produces 50,000 tonnes of the logs a year. That is enough to power hundreds of thousands of homes.
You can watch the original video in the Level 3 section.