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1. WO2020118438 - ULTRAFILTRATION/NANOFILTRATION MEMBRANE WITH TUNABLE PORE SIZE

Publication Number WO/2020/118438
Publication Date 18.06.2020
International Application No. PCT/CA2019/051796
International Filing Date 12.12.2019
IPC
B01D 61/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
B01D 61/18 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
18Apparatus therefor
B01D 61/20 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
20Accessories; Auxiliary operations
B01D 65/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
65Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02Membrane cleaning or sterilisation
B01D 67/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
67Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
CPC
B01D 61/14
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
B01D 61/18
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
18Apparatus therefor
B01D 61/20
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
14Ultrafiltration; Microfiltration
20Accessories; Auxiliary operations
B01D 65/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
65Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02Membrane cleaning or sterilisation ; ; Membrane regeneration
B01D 67/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
67Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
Applicants
  • SOCIÉTÉ DE COMMERCIALISATION DES PRODUITS DE LA RECHERCHE APPLIQUÉE SOCPRA SCIENCES ET GÉNIE S.E.C. [CA]/[CA]
Inventors
  • FARNIA, Farhad
  • ZHAO, Yue
Agents
  • LAVERY, DE BILLY, L.L.P.
Priority Data
62/779,12013.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ULTRAFILTRATION/NANOFILTRATION MEMBRANE WITH TUNABLE PORE SIZE
(FR) MEMBRANE D'ULTRAFILTRATION/NANOFILTRATION À TAILLE DE PORE RÉGLABLE
Abstract
(EN)
An ultrafiltration/nanofiltration membrane with gas-tunable pore size is provided. This membrane comprises an active layer arranged between two porous support layers, wherein the active layer is formed of randomly arranged cellulose nanocrystals, wherein pores are defined in the active layer by the free spaces existing between the randomly arranged cellulose nanocrystals, and wherein chains of a CO2-responsive polymer are grafted on the surface of the cellulose nanocrystals. There are also provided methods for filtering a feed using the membrane, for tuning the apparent pore size/MWCO/charge of the membrane, for cleaning the membrane, and for manufacturing the membrane.
(FR)
L'invention concerne une membrane d'ultrafiltration/nanofiltration présentant une taille de pore réglable à gaz. Cette membrane comprend une couche active agencée entre deux couches de support poreuses, la couche active étant formée de nanocristaux de cellulose agencés de manière aléatoire, des pores étant définis dans la couche active par les espaces libres existant entre les nanocristaux de cellulose agencés de manière aléatoire, et des chaînes d'un polymère sensible au CO2 étant greffées sur la surface des nanocristaux de cellulose. L'invention concerne également des procédés pour filtrer une charge à l'aide de la membrane, pour accorder la taille de pore apparente/MWCO/charge de la membrane, pour nettoyer la membrane, et pour fabriquer la membrane.
Latest bibliographic data on file with the International Bureau