MEMBRANE FOR CONCENTRATING BIOLOGICAL PARTICLES, CONCENTRATING DEVICE, CONCENTRATING SYSTEM, CONCENTRATING METHOD, AND METHOD FOR DETECTING BIOLOGICAL PARTICLES

Title:

MEMBRANE FOR CONCENTRATING BIOLOGICAL PARTICLES, CONCENTRATING DEVICE, CONCENTRATING SYSTEM, CONCENTRATING METHOD, AND METHOD FOR DETECTING BIOLOGICAL PARTICLES

Document Type and Number:

WIPO Patent Application WO/2020/183955

Kind Code:

A1

Abstract:

A concentrating membrane used to concentrate biological particles, the concentrating membrane including a hydrophilic composite porous membrane that comprises a porous base material and a hydrophilic resin coating that coats at least one main surface and the inner pore surfaces of the porous base material, the hydrophilic composite porous membrane being such that the ratio t/x of the membrane thickness t (μm) and the average pore size x (μm) measured by palm porometer is 50-630.　A device 10 for concentrating biological particles 50, the device 10 comprising: a housing 20 having an inlet 21 and an outlet 22, the housing 20 being such that a to-be-treated liquid 40 containing biological particles 50 and water is injected from the inlet 21 and discharged from the outlet 22 by the pressure difference between the inlet 21 and the outlet 22; a concentrating membrane 30 provided in the housing 20 so as to separate the inlet 21 and the outlet 22, the concentrating membrane 30 being a hydrophilic porous membrane to which the biological particles 50 do not adsorb, and allowing an effluent 42, which is a liquid in which the concentration of biological particles 50 has been decreased from that of the to-be-treated liquid 40, to penetrate from the surface on the inlet 21 side to the surface on the outlet 22 side; and a concentration space portion 24 for accommodating a concentrated liquid 41, which is a liquid in which the concentration of biological particles 50 is increased over that of the to-be-treated liquid 40 by the concentrating membrane 30, the concentration space portion 24 being located on the upstream side of the concentrating membrane 30 in the housing 20.

Inventors:

NAMBU MAMI (JP)
IKUTA YOSHIKAZU (JP)
NAGAO YU (JP)
KAIHATSU KUNIHIRO (JP)
YUMEN IKUKO (JP)
OGATA KATSUYA (JP)
AOKI DAISUKE (JP)

Application Number:

PCT/JP2020/002968

Publication Date:

September 17, 2020

Filing Date:

January 28, 2020

Export Citation:

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Assignee:

TEIJIN LTD (JP)
VISGENE LTD (JP)

International Classes:

B01D61/14; C12M1/12; B01D69/02; B01D69/12; B01D71/26; B01D71/38; C12N7/02; C12Q1/04; G01N33/48

Domestic Patent References:

WO2012115021A1

2012-08-30

Foreign References:

JPH0576733A	1993-03-30
JPH1190184A	1999-04-06
JP2013531236A	2013-08-01
JP2009183804A	2009-08-20
JP2003268152A	2003-09-25
JP2004016930A	2004-01-22
JP2002265658A	2002-09-18
JP2016534748A	2016-11-10
JP2006071478A	2006-03-16
JPS61271003A	1986-12-01
JP2019047540A	2019-03-22
JP2019047541A	2019-03-22

Other References: