Title:
SEPARATING/PURIFYING METHOD AND SEPARATING/PURIFYING APPARATUS OF MICRO USEFUL SUBSTANCE
Document Type and Number:
Japanese Patent JP2022182361
Kind Code:
A
Abstract:
To provide a separating/purifying method of micro useful substance.SOLUTION: A separating/purifying method of micro useful substance in which liquid containing micro useful substance is filtered by a hollow fiber membrane, where the hollow fiber membrane has an inner diameter of 0.2 to 1.4 mm and a molecular weight cut-off of 100,000 to 1,000,000. The filtration method has: a first filtration process in which liquid containing micro useful substance is press-fitted and filtered from a first opening part on one end side of the hollow fiber membrane, and separated into permeated liquid and first concentrated liquid; and a second filtration process in which the first concentrated liquid is press-fitted and filtered from a second opening part on the other end side of the hollow fiber membrane, and separated into permeated liquid and second concentrated liquid, where concentrated liquid with increased concentration of the micro useful substance is obtained by filtration of alternately executing the first filtration process and the second filtration process for plural times at the membrane surface velocity of 0.3 to 2 m/sec.SELECTED DRAWING: None
Inventors:
NAKATSUKA NOBUYUKI
Application Number:
JP2021089878A
Publication Date:
December 08, 2022
Filing Date:
May 28, 2021
Export Citation:
Assignee:
DAICEN MEMBRANE SYSTEMS LTD
International Classes:
C07K1/34; B01D61/14; B01D61/58; B01D63/02; B01D69/00; B01D69/02; B01D69/08; C12M1/12
Attorney, Agent or Firm:
Satoshi Furuya
Yoshitsune Kazumasa
Yoshitsune Kazumasa
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