Scientists Discover An Amazing Practical Use For Leftover Coffee Grounds

[Warpy]

"The disposal of organic waste poses an environmental challenge as it emits large amounts of greenhouse gases including methane and carbon dioxide, which contribute to climate change," explained RMIT University engineer Rajeev Roychand.

With a booming construction market globally, there's also an ever increasing demand for resource intensive concrete causing another set of environmental challenges too..
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-Organic products like coffee grounds can't be added directly to concrete because they leak chemicals that weaken the building material's strength. So using low energy levels the team heated coffee waste to over 350 °C (around 660 °F) while depriving it of oxygen.

This process is called pyrolyzing. It breaks down the organic molecules, resulting in a porous, carbon-rich charcoal called biochar, that can form bonds with and thereby incorporate itself into the cement matrix.

https://www.sciencealert.com/scientists-discover-an-amazing-practical-use-for-leftover-coffee-grounds