Carbon dioxide fixation method
AssigneeMitsubishi Heavy Industries, Ltd.
InventorMasayuki Inui
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Abstract
A carbon dioxide fixation method includes a step of preparing a calcium-containing substance containing calcium, a step of preparing a calcium extraction substance for extracting calcium ions from the calcium-containing substance by a reaction with the calcium-containing substance to produce a calcium-containing intermediate, a step of producing a gel including the calcium-containing intermediate, by mixing the calcium-containing substance and the calcium extraction substance, a step of supplying a basic substance and carbon dioxide to the gel including the calcium-containing intermediate to precipitate calcium carbonate which is slightly soluble, and a step of removing the precipitated calcium carbonate.
Claims5
A carbon dioxide fixation method, comprising:
- a step of preparing a calcium-containing substance containing calcium;
- a step of preparing a calcium extraction substance for extracting calcium ions from the calcium-containing substance by a reaction with the calcium-containing substance to produce a calcium-containing intermediate;
- a step of mixing the calcium-containing substance and the calcium extraction substance to produce a gel including the calcium-containing intermediate;
- a step of supplying a basic substance and carbon dioxide to the gel including the calcium-containing intermediate to precipitate calcium carbonate which is slightly soluble;
- and
- a step of removing the precipitated calcium carbonate.
Dependencies are inferred from the claim text.