Method for Extracting and Sequestering Carbon Dioxide

A method and apparatus to extract and sequester carbon dioxide (CO2) from a stream or volume of gas wherein said method and apparatus hydrates CO2, and reacts the resulting carbonic acid with carbonate. Suitable carbonates include, but are not limited to, carbonates of alkali metals and alkaline ear...

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Bibliographic Details
Main Authors: Rau, Gregory H., Caldeira, Kenneth G.
Other Authors: United States. Department of Energy.
Format: Patent
Language:English
Published: 2005
Subjects:
Online Access:https://digital.library.unt.edu/ark:/67531/metadc782761/
Description
Summary:A method and apparatus to extract and sequester carbon dioxide (CO2) from a stream or volume of gas wherein said method and apparatus hydrates CO2, and reacts the resulting carbonic acid with carbonate. Suitable carbonates include, but are not limited to, carbonates of alkali metals and alkaline earth metals, preferably carbonates of calcium and magnesium. Waste products are metal cations and bicarbonate in solution or dehydrated metal salts, which when disposed of in a large body of water provide an effective way of sequestering CO2 from a gaseous environment.