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The best options appear to be replacing the heat source that drives the calcination step for making cement from limestone with either an electric plasma arc fur
by photochemsyn 3y ago
The best options appear to be replacing the heat source that drives the calcination step for making cement from limestone with either an electric plasma arc furnace or green hydrogen, both sourced from solar/wind inputs:
https://arstechnica.com/science/2022/11/the-road-to-low-carbon-concrete/2/ https://arstechnica.com/science/2022/11/the-road-to-low-carb...
- hannob 3y agoReplacing the heat source only solves around 1/3rd of the problem. Most emissions come from the calcination, aka the conversion of CaCO3 to CaO and CO2.
- photochemsyn 3y agoCapture the CO2 from the calcination and make diamond out of it?