| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce an atmospheric level of carbon dioxide which is a global warming greenhouse gas for prevention of global warming. <P>SOLUTION: The method for reducing the atmospheric level of carbon dioxide comprises a step of producing decarbonated sea water by decarbonating surface ocean water, and a step of making the decarbonated sea water come in contact with the atmosphere in order for the sea water to absorb carbon dioxide in the atmosphere with chemical equilibrium effects between the atmosphere and the ocean surface. Calcium and magnesium or the like existing together in the sea water are combined with a carbonic acid without adding any additive to the sea water so that the carbonic acid contained in the sea water is separated and recovered as an insoluble carbonate. Furthermore, the carbonic acid is precipitated, separated and recovered in the form of the insoluble carbonate, which is then sunk deep under the sea and on the sea bottom. These steps can be integrated into a series of processes. <P>COPYRIGHT: (C)2004,JPO |
