Title:
CONCENTRATION METHOD AND CONCENTRATION SYSTEM FOR RAW MATERIAL LIQUID
Document Type and Number:
WIPO Patent Application WO/2023/136214
Kind Code:
A1
Abstract:
Provided are a raw material liquid concentration method and a raw material liquid concentration system that can achieve a high flux even when using a raw material liquid that is rich in an organic solvent. An aspect of the present invention provides a method for concentrating a raw material liquid, said method comprising a concentration step for bringing a raw material liquid and an induction solution in contact via a forward osmosis membrane. The raw material liquid contains not less than 50 mass% of an organic solvent and a valuable substance. The forward osmosis membrane has a base material layer and an active layer. Either the induction solution contains a hydrophobic induction solute and the active layer is hydrophilic, or the induction solution contains a hydrophilic induction solute and the active layer is hydrophobic.
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Inventors:
TAKADA RYOICHI (JP)
OSAKI TAKAHIRO (JP)
KATAYAMA YUJI (JP)
OSAKI TAKAHIRO (JP)
KATAYAMA YUJI (JP)
Application Number:
PCT/JP2023/000173
Publication Date:
July 20, 2023
Filing Date:
January 06, 2023
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
B01D61/00; B01D69/08; B01D69/10; B01D69/12; B01D71/10; B01D71/26; B01D71/34; B01D71/42; B01D71/52; B01D71/56; B01D71/62; B01D71/64; B01D71/68; B01D71/72
Domestic Patent References:
| WO2022154097A1 | 2022-07-21 | |||
| WO2020241795A1 | 2020-12-03 | |||
| WO2021054406A1 | 2021-03-25 |
Foreign References:
| US20130048561A1 | 2013-02-28 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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