Title:
LITHIUM RECOVERY DEVICE AND LITHIUM RECOVERY METHOD
Document Type and Number:
WIPO Patent Application WO/2023/027190
Kind Code:
A1
Abstract:
This lithium recovery device 10C is provided with a processing tank 1 that is partitioned into a supply tank 11 and a recovery tank 13 by a lithium ion-conducting electrolyte membrane 2. In order to selectively move Li+ to an aqueous solution RS in the recovery tank 13 from an aqueous solution SW in the supply tank 11, the aqueous solution SW containing Li+ and other metal ions Mn+, this lithium recovery device 10C is also provided with: a first power supply 51 which is connected between a first electrode 31 that has a porous structure and is arranged so as to be in contact with a supply tank 11-side surface of the electrolyte membrane 2 and a second electrode 32A that is arranged within the recovery tank 13, in such a manner that the first electrode 31 functions as the positive electrode; and a sub power supply 53 which is connected in series to the positive electrode of the first power supply 51, while having the positive electrode thereof connected to a sub electrode 41 that is arranged within the supply tank 11 at a distance from the electrolyte membrane 2.
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Inventors:
SASAKI KAZUYA (JP)
SHINMURA KIYOTO (JP)
SHINMURA KIYOTO (JP)
Application Number:
PCT/JP2022/032300
Publication Date:
March 02, 2023
Filing Date:
August 26, 2022
Export Citation:
Assignee:
UNIV HIROSAKI (JP)
International Classes:
B01D61/44; B01D61/46; C02F1/469
Foreign References:
| JP2019141807A | 2019-08-29 | |||
| JPH0985249A | 1997-03-31 | |||
| JP2019141808A | 2019-08-29 | |||
| JP2012200666A | 2012-10-22 | |||
| JP6233877B2 | 2017-11-22 | |||
| JP2019141807A | 2019-08-29 |
Other References:
KUNUGI S.INAGUMA Y.ITOH M.: "Electrochemical recovery and isotope separation of lithium ion employing lithium ion conductive perovskite-type oxides", SOLID STATE IONICS, vol. 122, July 1999 (1999-07-01), pages 35 - 39, XP004168357, DOI: 10.1016/S0167-2738(99)00073-9
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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