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U.S. Department of Energy
Office of Scientific and Technical Information

Method for Extracting and Sequestering Carbon Dioxide

Patent ·
OSTI ID:839574

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.

Sponsoring Organization:
USDOE
Assignee:
DOEGC
Patent Number(s):
PATENTS-US-A6890497
Application Number:
U.S. Patent Applications 09/759,781; DOE Case S-96306
OSTI ID:
839574
Country of Publication:
United States
Language:
English