EP4028151A1 - Membranes biomimetiques composites a canaux artificiels d'eau - Google Patents
Membranes biomimetiques composites a canaux artificiels d'eauInfo
- Publication number
- EP4028151A1 EP4028151A1 EP20765321.3A EP20765321A EP4028151A1 EP 4028151 A1 EP4028151 A1 EP 4028151A1 EP 20765321 A EP20765321 A EP 20765321A EP 4028151 A1 EP4028151 A1 EP 4028151A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- water
- formula
- membranes
- biomimetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
- B01D69/105—Support pretreatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0006—Organic membrane manufacture by chemical reactions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0093—Chemical modification
- B01D67/00933—Chemical modification by addition of a layer chemically bonded to the membrane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
- B01D69/1251—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction by interfacial polymerisation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/56—Polyamides, e.g. polyester-amides
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/30—Cross-linking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/04—Characteristic thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/20—Specific permeability or cut-off range
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Definitions
- the invention belongs to the field of biomimetic membranes with artificial water channels, in particular their use in the context of the production and management of drinking water.
- the present invention relates to a biomimetic membrane with artificial water channels, to its method of synthesis, as well as to its use for the desalination of brackish and sea water, obtaining water. ultra-pure or filtration of pollutants.
- AQP proteins ii) liposomes in which AQPs are incorporated for protection and iii) a polyamide support including liposomes (Zhao, Y. et al. J. Membrane Sci. 2012, 423-424, 422-428).
- liposomes are justified by the fact that AQPs are transmembrane proteins and that their native environment is the hydrophobic region of cell membranes.
- Hybrid polyamide membranes based on AQP on a flat support were found to be more permeable (4 LMH / bar, + 33% compared to the polyamide membrane of the reference), with reduced selectivity: NaCl rejection of 97% (Qi, S . et al. J. Membrane Sci. 2016, 508, 94-103).
- the present invention thus relates in the first place to new biomimetic membrane materials making it possible to overcome the various drawbacks of the prior art.
- the process for preparing these new membrane materials is also simple and inexpensive. They exhibit improved performance compared to existing RO membranes, in particular in terms of water permeability, rejections of salts and organic molecules and in terms of mechanical and chemical stability.
- the present invention thus exhibits a simultaneous improvement in water permeability and selectivity through soft material superstructures with an increased preference for water through artificial water channels. This is reflected in particular in the synergistic increase in water permeability (4-5 LMH / bar) and selectivity / rejection of NaCl ( ⁇ 99.5%) and their long-term stability.
- the water permeability of the membranes according to the invention is 3 to 5 times better than that of traditional RO membranes (1.3-1.5 LMH / bar) while ensuring a NaCl rejection rate of more than 99% .
- R represents a linear or branched C4 to C8 alkyl group, preferably chosen from butyl, pentyl, hexyl, heptyl or octyl,
- the at least one compound of formula I is in the form of supramolecular aggregates of the imidazole quartet type, homogeneously distributed in the rigid matrix formed by the crosslinked polyamide film.
- the composite biomimetic membrane according to the invention is characterized in that it comprises:
- R represents a linear or branched C4 to C8 alkyl group, preferably chosen from butyl, pentyl, hexyl, heptyl or octyl,
- the at least one compound of formula I is in the form of aggregates supramolecular imidazole quartet type, homogeneously distributed in the rigid matrix formed by the crosslinked polyamide film.
- the term "ultrafiltration support membrane” means any type of microporous support compatible with the pressures and the envisaged uses. It may be, for example, a microporous support in microporous polysulfone (PSF) or in polyetherosulfone (PES) cast on a support in non-woven reinforcing fabric of polyethylene (PET), polypropylene (PP), polyacrylonitrile (PAN 50 or PAN 450), or in PVDF (polyvinylidene). It can be chosen, for example, from commercial membranes of the M-PS20-GPET and M-PS35-GPP type.
- PSF microporous polysulfone
- PES polyetherosulfone
- PVDF polyvinylidene
- the molecular weight threshold (MWCO) of the support may be 10 to 250 kD, preferably 10 to 40 kD, or more preferably 20 to 35 kD, with an MWCO point value of 20 kD.
- the thickness of the support may be of the order of 20 to 200 ⁇ m, for example 20 to 70 ⁇ m for a porous support made of PSF or PES and from 50 to 150 ⁇ m for a support made of PET or
- the composite biomimetic membrane according to the invention can be chosen from membranes in which the ultrafiltration support membrane has a molecular weight threshold in the range from 10 to 250 kD. preferably 10 to 40 kD, or even more preferably 20 to 35 kD, with a MWCO point value of 20 kD.
- the thickness of the ultrafiltration support membrane can be 20 ⁇ m to 200 ⁇ m, preferably 20 ⁇ m to 150 ⁇ m.
- the membrane according to the invention comprises at least one compound of formula I: Formula I in which,
- R represents a linear or branched C4 to C8 alkyl group, preferably chosen from butyl, pentyl, hexyl, heptyl or octyl,
- the compound of formula I can be chosen from the compounds in which R is a butyl or a hexyl.
- the compound of formula I can be chosen from the compounds in which X represents O.
- the composite biomimetic membrane according to the invention can comprise at least one compound of formula II: Formula II in which R 1 represents butyl or hexyl.
- the compounds of formula I or II are in the form of supramolecular aggregates of the imidazole quartet or I-quartet type as described in Le Duc et al., Licsandru et al. . or Barboiu et al. (Y. Le Duc, et al., Angew. Chem. Int. Ed. 2011, 50 (48), 11366-11372; E. Licsandru, et al., J. Am. Chem. Soc., 2016, 138, 5403-5409; M. Barboiu, Chem. Commun., 2016, 52, 5657-5665 4. 1. Kocsis et al.
- the compounds of formula I or II are in the form of supramolecular aggregates imidazole quartet or I-quartet.
- an imidazole quartet, or I-quartet is a self-assembly of four molecules of formula I or II and two molecules of water.
- I-quartet defines the first degree of organization of artificial water channels and channel assemblies lead to the formation of supramolecular aggregates which are homogeneously embedded in the polyamide film during the implementation of the process of the present invention.
- the term “supramolecular aggregate” is understood to mean a crystalline aggregate which may have an average diameter ranging from 20 to 40 nm.
- Supramolecular aggregates can be composed of self-organized lamellar phases containing artificial water channels of the imidazole-quartet type.
- the average size of non-porous aggregates is generally 20 to 40 nm.
- each aggregate can include 84,000 molecules, or 14 average amol in a crystal of the dimensions 30 x 30 x 30 nm with an ideal distribution of 70 x50 x24 molecules of formula I or II according to the three dimensions of the crystal.
- a supramolecular aggregate can comprise from 9 to 18 amol of compound of formula I or IL
- the supramolecular aggregates of the imidazole quartet or I-quartet type are distributed homogeneously in the rigid matrix formed by the crosslinked polyamide film.
- the surface density of aggregates of the molecules of formula I or II can range from 30 to 40 aggregates / 100 ⁇ m 2 .
- crosslinked polyamide film means a surface layer resulting from the in situ polymerization of a crosslinked polyamide.
- the polyamide is formed from monomers bearing amine functions (hereinafter “amine monomer”) and from monomers bearing acyl chloride functions (hereinafter “acyl chloride monomer”).
- the monomers can be divalent and trivalent. Since the polyamide film is crosslinked, at least one of the monomers used is trivalent.
- the amine monomers can be of the following formula LLN-R 3 - NLL or H2N-R a (NH2) -NH2, R a being a C1 to C20 group, linear or branched, aliphatic or heteroaliphatic, saturated or unsaturated, cyclic or acyclic, aryl or heteroaryl, arylalkyl or alkylaryl, optionally comprising heteroatoms chosen from O, N and / or S.
- the amine monomer can be a diamine or triamine (divalent or trivalent).
- the acyl chloride monomers can be of the following formulas C10C-R b -C0Cl or C10C-R b (C0Cl) -C0Cl, R b being a C1 to C20 group, linear or branched, aliphatic or heteroaliphatic , saturated or unsaturated, cyclic or acyclic, aryl or heteroaryl, arylalkyl or alkylaryl, optionally comprising heteroatoms chosen from O, N and / or S.
- the acyl chloride monomer can be an acyl or tri chloride acyl chloride (divalent or trivalent).
- the acyl chloride monomer can be selected from the group comprising tri-mesoyl chloride, terephthaloyl choride, isophthaloyl choloride and cyclohexane 1,3,5-tricarbonyl chloride.
- At least one of the monomers is trivalent in order to obtain a crosslinked polyamide film.
- the monomers used are metaphenylenediamine (MPD) and mesoyl trichloride (TMC).
- the crosslinked polyamide film can be deposited or formed on the microporous surface of the ultrafiltration support membrane.
- the crosslinked polyamide film may have a thickness ranging from 0.05 to 0.4 ⁇ m, preferably from 0.08 to 0.15 ⁇ m.
- the composite biomimetic membranes according to the invention can be so-called high, low or very low density membranes.
- a high density membrane can be prepared with a 0.32 M solution of MPD and a 3.7 mM solution of TMC.
- a low density membrane can be prepared with a 0.19 M solution of MPD and a 3.7 mM solution of TMC.
- a very low density membrane can be prepared with a 0.13 M or 0.17 M solution of MPD and a 2.5 mM solution of TMC.
- the invention also relates to a method of manufacturing a composite biomimetic membrane according to the invention comprising:
- the method of manufacturing a composite biomimetic membrane according to the invention comprises the steps: a) impregnation of the surface of an ultrafiltration support membrane with a colloidal suspension comprising at least one compound of formula I in the form of 'supramolecular aggregates:
- R represents a C4 to C8 alkyl group, preferably chosen from butyl, pentyl, hexyl, heptyl or octyl,
- X represents S or O; b) forming a crosslinked polyamide film by interfacial polymerization on the surface of the impregnated membrane obtained in step a), and obtaining the composite biomimetic membrane.
- the colloidal suspension from step a) can comprise at least one compound of formula II: Formula II in which R 1 represents butyl or hexyl.
- the colloidal suspension from step a) comprises an organic solvent and / or water.
- the organic solvent can be chosen from methanol, ethanol, propanol, isopropanol and acetonitrile.
- the solvent can be a mixture of water and organic solvent, preferably water, and ethanol or methanol.
- the solvent / water volumetric ratio can be 70/30 to 90/10 v / v, preferably 85/15.
- the concentration of the compound of formula I or formula II in the colloidal suspension of step a) of the process according to the invention is within a range ranging from 4 mM to 0.15 M, preferably from 21 , 9 mM to 0.12 M.
- the preparation of the colloidal suspension from step a) of the process according to the invention can comprise the sub-steps: i) dissolving a compound of formula I or II in an organic solvent; ii) adding water (deionized or Milli-Q) to the solution obtained in i) according to a solvent / water volumetric ratio ranging from 70/30 to 90/10 v / v, preferably 85/15; iii) ultrasonic homogenization, preferably for less than 30 minutes, followed by a rest period, preferably for 1 to 3 hours.
- the concentration of compound of formula I or II in the solution of step i) of the preparation of the colloidal suspension of step a) of the process according to the invention is within a range of 5 , 23 mM to 0.18 M, preferably from 21.9 mM to 0.12 M, and more preferably from 33 mM to 83.9 mM.
- step a) of the process according to the invention can be carried out by flowing the liquid solution, spraying or electrospraying on the surface of the support membrane.
- step a) can be followed by a rest period, preferably of a duration of 30 seconds to 5 minutes, before the implementation of step b) of the method according to the invention. .
- This period makes it possible to standardize the dispersion of the supramolecular aggregates of the colloidal suspension in the pores of the surface of the ultrafiltration support membrane.
- the interfacial polymerization of step b) of the process according to the invention can comprise the sub-steps: i) impregnation of the surface of the impregnated membrane obtained in step a) with a solution comprising a di- or triamine monomer; and ii) impregnation of the surface of the impregnated membrane obtained in step i) with a solution comprising a di- or acyl trichloride monomer; iii) polymerization by immersion in water of the impregnated membrane obtained in step ii), at a temperature greater than or equal to 50 ° C.
- the ultrafiltration support membrane can be fixed on a base.
- Said base can be a base of stainless steel, aluminum, tempered glass or Teflon. This can make it possible to limit the polymerization reaction to the available surface of the ultrafiltration support membrane.
- the amine monomer is dissolved in water (deionized or Milli-Q).
- concentration of amine monomer in the solution of step i) of the interfacial polymerization of step b) of the process according to the invention can range from 5.8 mM to 0.32 M.
- a high density membrane (H-I4RO) can be obtained by using a 0.32 M solution of amine monomer (e.g. MPD), low density (L-I4RO) a 0.19 M solution of amine monomer (e.g. MPD) or very low density (XL-I4RO) a 0.13 or 0.17 M solution of amine monomer (eg MPD).
- the impregnation of step i) of the interfacial polymerization of step b) of the process according to the invention may have a duration of less than 240 seconds, preferably less than 120 seconds.
- step i) of the interfacial polymerization of step b) of the process according to the invention can be carried out by flowing the aqueous solution, spraying or electrospraying on the surface of the support membrane. ultrafiltration.
- step i) of the interfacial polymerization of step b) of the process according to the invention is followed by drying of the ultrafiltration support membrane to remove any excess solution on membrane surface or traces of residual compounds. Drying can be done by air flow or using absorbent materials.
- the acyl chloride monomer is dissolved in an organic solvent (for example hexane, isopar g, trichlorotrifluoroethene), toluene).
- concentration of acyl chloride monomer in the solution of step ii) of the interfacial polymerization of step b) of the process according to the invention can range from 1.4 mM to 11.3 M.
- H-I4RO high density
- L-I4RO low density
- TMC acyl chloride monomer
- XL-I4RO very low density membrane
- step ii) of the interfacial polymerization of step b) of the process according to the invention can be carried out by immersion, spraying or electrospray on the surface of the ultrafiltration support membrane.
- the impregnation of step ii) of the interfacial polymerization of step b) of the process according to the invention may have a duration of less than 120 seconds, preferably less than 60 seconds.
- the temperature of step iii) of the interfacial polymerization of step b) of the process according to the invention is greater than or equal to 50 ° C, preferably at a temperature ranging from 50 to 95 ° C. , and even more preferably 95 ° C.
- the duration of the immersion of step iii) of the interfacial polymerization of step b) of the process according to the invention can be from 60 to 240 seconds, preferably 120 seconds.
- the method according to the invention further comprises a step c) of rinsing the composite biomimetic membrane obtained in step b).
- the rinsing can be carried out in an aqueous solution of NaOCl (eg at 200 ppm) and / or in an aqueous solution of Na 2 S 2 par 5 (eg at 1000 ppm), followed by a second immersion in water (deionized). or MilliQ), preferably under conditions similar to polymerization step iii) of step b) of the process according to the invention.
- the membranes according to the invention can for example be stored in deionized water or in a solution of sodium metabisulphite (lg / L) at low temperature (around 4 ° C) or else protected by a layer. protective such as glycerin before any use for filtration.
- the invention also relates to the use of composite biomimetic membranes according to the invention for the desalination of brackish water or sea water, obtaining ultra-pure water and / or filtration of pollutants.
- the term “pollutants” or “pollutants” is understood to mean any element making the water unfit for consumption for particularly toxicological reasons, for example urea, drug residues (paracetamol, etc. .), nitrosamines, boric acid, etc.
- the desalination yield is greater than or equal to 99% (expressed as rejection as NaCl, R NaCl ), preferably greater than 99.5% or even up to 99.9%.
- R NaCl rejection as NaCl
- R NaCl rejection as NaCl
- the desalination yield is greater than or equal to 99% (expressed as rejection as NaCl, R NaCl ), preferably greater than 99.5% or even up to 99.9%.
- NaCl permeance is understood to mean the coefficient of permeability of solute B determined using the value of the real rejection R r and the flow of permeate with a feed solution containing 35 g / L of NaCl at pH 8.
- “Brackish water” means water with a concentration of 500-10000 ppm NaCl.
- permeance is understood to mean the coefficient A corresponding to the flow of permeate with a pure water feed solution, Jw, s0 divided by the applied pressure difference DR.
- Sea water means water with a concentration of 30,000-50000 ppm NaCl.
- FIG. 1 represents a schematic operating mode of the process according to the invention: preparation of a composite PA-AWC biomimetic membrane according to the invention (I4RO): impregnation on the ultrafiltration support membrane of PS20-GPET of an aqueous solution containing supramolecular aggregates (AWC) followed by the impregnation of an aqueous solution comprising the MPD amine monomer, followed by the impregnation of an organic solution containing the TMC acid chloride monomer followed by the interfacial polymerization (IP) reaction with the result of obtaining d a polyamide (PA) polymeric film incorporating the water channels within the crosslinked PA-AWC biomimetic layer, according to the invention.
- I4RO interfacial polymerization
- FIG. 2 shows scanning electron microscopy (SEM) photographs showing the cross section of the reference membranes without TFC channels and I4RO biomimetic membranes according to the invention; as well as the nanometric organization of the supramolecular aggregates of the 14 within the polyamide matrix.
- Figure 3 shows AFM atomic force microscopy images of the A) TFC reference membrane (left) and the biomimetic membranes B) H-I4R0 1 and C) L-I4R0 2.
- FIG. 4 represents an EDX analysis of the surface and the elemental surface distribution a) of the reference membrane TFC and b) the hybrid biomimetic membrane H-I4R0 1-HC6.
- Figure 5 shows the laboratory system used for the measurements of water permeance, flow and release of solute.
- Figure 6 shows the desalination performance of a) brackish water (18 bar) or b) sea water (65 bar) using
- -functionalized polyamide membranes r) REFPA, s) HFAPA, (La et al. J. Membrane Sci. 2013, 437 33-39, t) AQP, (Wang et al. J. Membrane Sci. 2012, 423-424 , 422-428), vl) 3DPAN450TFC_1, v2) 3DPAN450TFC_2, v3) 3DPAN450TFC_3, v4) 3DPAN450TFC 4 (Chuwdhury et al. Science, 2018, 361, 682-686).
- FIG. 7 illustrates the difference in structure between the membranes obtained from the nanocrystalline solutions HC8: a) at room temperature (25 ° C) and b) at 60 ° C; and membranes obtained from colloidal solutions of c) HC4, d) HC6 at room temperature according to the invention.
- Example 1 Synthesis of I4RO biomimetic membranes according to the invention.
- the M-PS20-GPET and M-PS35-GPP ultrafiltration support membranes are fixed with tape on a stainless steel plinth so that the polymerization reaction is produced only on the available surface.
- Metaphenylenediamine MPD is dissolved in deionized water.
- the use of a 0.32 M MPD solution leads to the formation of high density membranes (H-I4RO), the use of a 0.19 M MPD solution leads to the formation of low density membranes (L-I4RO), while the use of a 0.13 M and 0.17 M MPD solution leads to the formation of very low density membranes (XL-I4RO).
- the surface of the M-PS20-GPET or M-PS35-GPP ultrafiltration membrane (Table 1) is impregnated by immersion for 120 seconds in the MPD solution to obtain a uniform and homogeneous dispersion.
- the drying is carried out with an air blower of the membrane to remove any excess solution on the surface of the membrane or traces of residual compounds.
- PA-TFC or I4RO thin layers is observed on the surface of the support membranes with a thickness of about 0.1 to 0.4 ⁇ m.
- the membranes obtained are then immersed in deionized water at 95 ° C for approximately 120 seconds, followed by rinsing with an aqueous solution of 200 ppm NaOCl for approximately 120 seconds, followed by immersion in a solution. aqueous 1000 ppm Na2S205 for about 30 seconds, to be finally immersed in deionized water at 95 ° C for about 120 seconds.
- the membranes are stored in deionized water at 4 ° C or protected by a protective layer of glycerin before any use for filtration.
- Example 2 Static characterization methods and filtration methods of composite biomimetic membranes
- AFM Atomic force microscopy
- Nanoman with electronics Nanoscope 5 (Bruker Instruments) were used to measure the surface roughness of TFC and I4RO membranes.
- the sample was placed directly on the motorized XY stage, using the Tapping mode.
- the measuring tips for scanning the samples were from Nanosensors, PPP NCSTR, with a nominal spring constant of 7 N / m and a typical radius less than 5 nm. All images were acquired with a sampling resolution of at least 512 pts / 512 lines using a scan rate of 5.5 Hz for 5pm 2 (image size) and 0.65 Hz for smaller sizes.
- These AFM images show the formation of thin layers with significant roughness for the TFC reference membranes in PA, which is greatly reduced for the I4RO biomimetic hybrid membranes.
- Table 2 EDX surface analysis and elemental surface distribution of the TFC reference membrane.
- Table 3 EDX surface analysis and elemental surface distribution of the L-I4R0 4 biomimetic membrane.
- Filtration system Measurements of the coefficient of pure water permeability (also called water permeability), permeate flow and solute discharge, as well as backwashing experiments, were carried out. carried out using a cross-flow laboratory system for all membranes, including the TFC reference membrane and I4RO hydride biomimetic membranes with different natures: I4R0 1, as well as commercial reverse osmosis membranes ( Figure 5).
- the laboratory system includes a high pressure pump (Hydra-cell pump, Wanner Engineering, Inc., Minneapolis, MN), feed vessel, flat membrane housing cell, temperature control systems and data acquisition.
- the housing cell consists of a rectangular channel 7.6 cm long, 2.8 cm wide and 0.3 cm high. The active surface of the membrane sample is therefore 23 cm 2 .
- the cross flow was controlled by a floating disc rotameter and adjusted, along with the operating pressure, by means of a bypass valve and back pressure regulator (Swagelok, Solon, OH), while the flow of permeate was measured automatically for 60 s using a computer interface balance.
- the temperature was controlled by a recirculating chiller (model MC 1200, Lauda, Lauda-Kônigshofen) with a stainless steel coil submerged in the feed tank.
- the observed solute release value was therefore calculated from the solute concentrations in the feed and permeate streams, as shown in Table 4.
- the solute concentrations in the feed and permeate streams were obtained. from the electrical conductivity measured using a calibration line. Three different observed rejection values were obtained, one every 30 minutes, and the three values were averaged.
- the solute permeability coefficient "B" was also calculated as shown in Table 4. For all experiments, the feed water temperature was kept constant at 27 ⁇ 1 ° C.
- the feed solution was allowed to flow with a cross flow of 4.5 L / min during the backwash. After 20 minutes, the permeate solution was depressurized, the feed solution was put back under pressure: water permeability, flow and rejection tests carried out under the same operating conditions and at the same concentrations as those described previously, followed determining the values of A, B and the discharges observed. Three backwash cycles were performed.
- Example 3 Comparison of the efficiency of a biomimetic membrane comprising I-quartets (according to the invention) and a membrane comprising nanocrystals.
- WP permeability to water and rejection of salts,%) of the AWC-HC4 and AWC-HC6 membranes according to the invention and of a composite layer membrane.
- the membranes according to the invention AWC-HC4 and AWC-HC6 show marked improvements in permeabilities and with high selectivities.
- FIG. 7 illustrates the difference in structure between the membranes obtained from the nanocrystalline solutions and the membranes obtained from the colloidal solutions.
- the membranes according to the invention are homogeneous, with protuberances of the “ridge and valley” type which are very homogeneous and arranged over the entire surface of the membrane. AWC particles are smaller and continuously interacting on the surface of PA protuberances.
- the composite biomimetic membranes according to the invention thus have the following advantages:
- membranes also exhibit remarkable homogeneity properties due to controlled nanostructuring during their synthesis.
- These membranes also exhibit good stability in a basic hydrolytic environment and / or dissolution in the presence of organic solvents such as ethanol or methanol or surfactants such as dodecylsulphate.
- the membranes according to the invention exhibit a biomimetic architecture in the form of nanometric supramolecular aggregates of AWC channels with a structure of soft material within a rigid polymer matrix of PA.
- This particular architecture of the membranes in accordance with the invention is favorable to the permeability of water without allowing the transport of cations and anions. This has an advantage in terms of water permeability by increasing their transport capacity while maintaining high ionic retention.
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1910152A FR3100722B1 (fr) | 2019-09-13 | 2019-09-13 | Membrane biomimetiques composites a canaux artificiels d’eau |
| PCT/EP2020/075162 WO2021048182A1 (fr) | 2019-09-13 | 2020-09-09 | Membranes biomimetiques composites a canaux artificiels d'eau |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4028151A1 true EP4028151A1 (fr) | 2022-07-20 |
Family
ID=69024373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20765321.3A Pending EP4028151A1 (fr) | 2019-09-13 | 2020-09-09 | Membranes biomimetiques composites a canaux artificiels d'eau |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US12397266B2 (fr) |
| EP (1) | EP4028151A1 (fr) |
| JP (1) | JP2022548531A (fr) |
| KR (1) | KR20220089693A (fr) |
| CN (1) | CN114728241B (fr) |
| AU (1) | AU2020346338A1 (fr) |
| FR (1) | FR3100722B1 (fr) |
| IL (1) | IL291151A (fr) |
| WO (1) | WO2021048182A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3100722B1 (fr) | 2019-09-13 | 2021-10-15 | Centre Nat Rech Scient | Membrane biomimetiques composites a canaux artificiels d’eau |
| CN119098067A (zh) * | 2023-06-08 | 2024-12-10 | 沃顿科技股份有限公司 | 反渗透膜的制备方法和由此制备的反渗透膜 |
| CN117244412A (zh) * | 2023-07-27 | 2023-12-19 | 率氢技术(北京)股份有限公司 | 一种反渗透膜片及其制备方法 |
| CN120054245A (zh) * | 2025-03-11 | 2025-05-30 | 海南大学 | 一种具有人工水通道的cof仿生膜及其制备方法和应用 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4277344A (en) | 1979-02-22 | 1981-07-07 | Filmtec Corporation | Interfacially synthesized reverse osmosis membrane |
| NO346294B1 (no) | 2010-04-30 | 2022-05-30 | Toray Advanced Mat Korea Inc | Foroverrettet osmosemembran for sjøvannavsalting, og fremgangsmåte for produksjon av denne |
| WO2013043118A1 (fr) * | 2011-09-21 | 2013-03-28 | Nanyang Technological University | Membranes composites en film mince à base d'aquaporine |
| CN102512982B (zh) | 2012-01-11 | 2013-11-13 | 浙江理工大学 | 一种抗菌耐氧化复合反渗透膜 |
| US9561474B2 (en) * | 2012-06-07 | 2017-02-07 | International Business Machines Corporation | Composite membrane with multi-layered active layer |
| GB201300465D0 (en) | 2013-01-11 | 2013-02-27 | Aquaporin As | A hollow fiber module having tfc-aquaporin modified membranes |
| CN104117288B (zh) | 2013-04-25 | 2017-07-18 | 财团法人工业技术研究院 | 过滤材料及其制造方法 |
| CN105148750B (zh) | 2015-08-21 | 2017-07-28 | 浙江大学 | 一种聚酰胺复合膜表面改性的方法 |
| US12059654B2 (en) | 2016-02-08 | 2024-08-13 | Aquaporin A/S | Self-assembled nanostructures and separation membranes comprising aquaporin water channels and methods of making and using them |
| CN108176259A (zh) * | 2018-01-17 | 2018-06-19 | 浙江工业大学 | 一种改性聚酰胺反渗透膜及其制造方法 |
| FR3100722B1 (fr) | 2019-09-13 | 2021-10-15 | Centre Nat Rech Scient | Membrane biomimetiques composites a canaux artificiels d’eau |
-
2019
- 2019-09-13 FR FR1910152A patent/FR3100722B1/fr active Active
-
2020
- 2020-09-09 KR KR1020227012201A patent/KR20220089693A/ko active Pending
- 2020-09-09 AU AU2020346338A patent/AU2020346338A1/en not_active Abandoned
- 2020-09-09 JP JP2022514823A patent/JP2022548531A/ja active Pending
- 2020-09-09 EP EP20765321.3A patent/EP4028151A1/fr active Pending
- 2020-09-09 CN CN202080064152.1A patent/CN114728241B/zh active Active
- 2020-09-09 WO PCT/EP2020/075162 patent/WO2021048182A1/fr not_active Ceased
- 2020-09-09 US US17/642,625 patent/US12397266B2/en active Active
-
2022
- 2022-03-06 IL IL291151A patent/IL291151A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU2020346338A1 (en) | 2022-04-14 |
| JP2022548531A (ja) | 2022-11-21 |
| CN114728241B (zh) | 2025-01-03 |
| US20220347633A1 (en) | 2022-11-03 |
| CN114728241A (zh) | 2022-07-08 |
| KR20220089693A (ko) | 2022-06-28 |
| WO2021048182A1 (fr) | 2021-03-18 |
| FR3100722B1 (fr) | 2021-10-15 |
| IL291151A (en) | 2022-05-01 |
| US12397266B2 (en) | 2025-08-26 |
| FR3100722A1 (fr) | 2021-03-19 |
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