Calera would turn CO2 emissions into concrete
March 09, 2010
On land, coal and fire make carbon dioxide (CO2).
Under the sea, coral and water turn CO2 into calcium carbonate, or CaCO3. The hard, white CaCO3 is a key building block for these living marine structures.
Calera has taken a lesson from coral. At its pilot plant in Moss Landing, California, this cleantech start-up has devised a process to treat CO2 emissions with seawater to form CaCO3, with which they make cement, a component of concrete.
On their website, Calera equates the amount of concrete comprising the Grand Coulee Dam to 7 million tons of CO2.
If feasible on a large scale, the company sees an opportunity for 100-percent-clean coal power.
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