A team at George Washington University has demonstrated a new solar process that can produce lime (CaO) for cement without any emission of carbon dioxide, and at lower projected cost than the existing cement industry process. Production of cement accounts for 5-6percent of all anthropogenic CO2 emissions, generating 9 kg of the greenhouse gas for each 10 kg of cement produced, notes Dr. Stuart Licht and his colleagues in a paper on their process accepted for publication in the RSC journal...
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