Global coffee drinkers leave behind roughly 18 million tonnes of wet grounds every year, and a Korean lab has now blasted them with 900°C…

A South Korean lab has developed a 900°C plasma torch that turns wet spent coffee grounds into anthracite-grade solid fuel in just 90 seconds, offering a route to divert the world's roughly 18 million tonnes of annual coffee waste from landfill.

By The Artful Age Editorial Team · Sep 21, 2026