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Cement from the sea

17.11.2008

At one of the thermal power plants in California (USA), a plant was installed to produce cement from smoke and sea water.

By burning natural gas, a 1000-megawatt thermal power plant releases carbon dioxide into the air, which contributes to global warming. Capturing this gas and passing it through sea water (the power plant is located on the ocean), the plant produces calcium and magnesium carbonates, the salts of which are contained in the water.

After drying, the reaction product is a snow-white powder, similar in properties to Portland cement, and in composition to strong sea shells and coral structures. This production neutralizes more than 90% of the carbon dioxide emitted by the CHP.

So far, the pilot plant produces up to 10 tons of cement per day. It is planned to expand production and install such systems at other thermal power plants in the United States.

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