Title:
BIPOLAR MEMBRANE ELECTRODIALYZER AND METHOD FOR OPERATING SAME
Document Type and Number:
WIPO Patent Application WO/2024/053676
Kind Code:
A1
Abstract:
Provided are: a bipolar membrane electrodialyzer which has a high electric-current efficiency and in which the cation-exchange membrane is inhibited from suffering scale deposition therein due to divalent cations; and a method for operating the bipolar membrane electrodialyzer. The method is for operating a bipolar membrane electrodialyzer configured of a bipolar membrane, a cation-exchange membrane, and an anion-exchange membrane, the method comprising using the bipolar membrane electrodialyzer to yield an acid and an alkali from brine and being characterized by conducting electrodialysis while regulating the acid solution and/or the alkali solution so as to contain a salt to be decomposed.
Inventors:
KIKUCHI SADATO (JP)
OIZUMI RISA (JP)
KONISHI MASAYOSHI (JP)
HIGA MITSURU (JP)
TANIGUCHI IKUO (JP)
OIZUMI RISA (JP)
KONISHI MASAYOSHI (JP)
HIGA MITSURU (JP)
TANIGUCHI IKUO (JP)
Application Number:
PCT/JP2023/032541
Publication Date:
March 14, 2024
Filing Date:
September 06, 2023
Export Citation:
Assignee:
SUMITOMO OSAKA CEMENT CO LTD (JP)
UNIV YAMAGUCHI (JP)
UNIV KYUSHU NAT UNIV CORP (JP)
UNIV YAMAGUCHI (JP)
UNIV KYUSHU NAT UNIV CORP (JP)
International Classes:
C02F1/469; B01D61/44; B01D61/46
Domestic Patent References:
| WO2018008235A1 | 2018-01-11 |
Foreign References:
| JPH11565A | 1999-01-06 | |||
| JP2008259961A | 2008-10-30 | |||
| US20200024173A1 | 2020-01-23 | |||
| CN112939317A | 2021-06-11 |
Attorney, Agent or Firm:
TAMURA Chikashi et al. (JP)
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