Title:
METHOD FOR FIXING CARBON DIOXIDE
Document Type and Number:
WIPO Patent Application WO/2024/080132
Kind Code:
A1
Abstract:
[Problem] To provide a method for fixing carbon dioxide onto an alkaline earth metal, whereby it becomes possible to increase a carbon dioxide emission reduction capability while taking the amount of discharged carbon dioxide into consideration. [Solution] Provided is a method for fixing carbon dioxide, the method comprising: a first step S1 for allowing sea water or brine water to pass through a nano-filtration membrane to generate a first concentrated solution that is concentrated without the penetration through the nano-filtration membrane; a second step S2 for bringing an alkaline solution into contact with carbon dioxide to produce a solution to be treated which contains carbonate ions; and a third step S3 for bringing the first concentrated solution into contact with the solution to be treated, thereby causing the precipitation of a crystal of a carbonated product of the alkaline earth metal contained in the first concentrated solution.
Inventors:
NAKAGAKI TAKAO (JP)
HIRANO SATORU (JP)
MIHO YOSHIAKI (JP)
SHIMADA NORIYUKI (JP)
YUASA MASUO (JP)
ARIMOTO KOKI (JP)
HIRANO SATORU (JP)
MIHO YOSHIAKI (JP)
SHIMADA NORIYUKI (JP)
YUASA MASUO (JP)
ARIMOTO KOKI (JP)
Application Number:
PCT/JP2023/034902
Publication Date:
April 18, 2024
Filing Date:
September 26, 2023
Export Citation:
Assignee:
UNIV WASEDA (JP)
SASAKURA ENG CO LTD (JP)
SASAKURA ENG CO LTD (JP)
International Classes:
B01D53/14; B01D9/02; B01D53/62; B01D61/02; B01D61/44; B01D61/58; B01J39/04; B01J39/18; B01J49/06; B01J49/53; C01F5/24; C01F11/18; C02F1/42
Domestic Patent References:
| WO2022030529A1 | 2022-02-10 | |||
| WO2021261410A1 | 2021-12-30 |
Foreign References:
| KR20140032822A | 2014-03-17 |
Attorney, Agent or Firm:
ARAWORE INTERNATIONAL IP LAW FIRM (JP)
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