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Engineers Just Made Concrete 30% Stronger. The Secret Ingredient? Coffee.
(www.popularmechanics.com)
this post was submitted on 25 Aug 2023
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A biochar of spent coffee grounds.
Not coffee grounds.
If you don’t know what biochar is, it’s high carbon material that’s left over after burning organic matter (think:wood) slowly under low-oxygen conditions.
Biochar requires energy and emitting gases.
It seems unfair to say that we’re saving on CO2 and methane from decomposition without also counting the cost of the biochar combustion.
Biochar is still a pretty new concept, but results are promising as a potential overall carbon negative process.
Carbon negative when applied to soil. Making it is still a carbon releasing combustion process
EDIT okay I’m wrong they are including the production in their calculations.