WO2003095079A2 - Filtermembran - Google Patents
Filtermembran Download PDFInfo
- Publication number
- WO2003095079A2 WO2003095079A2 PCT/EP2003/004959 EP0304959W WO03095079A2 WO 2003095079 A2 WO2003095079 A2 WO 2003095079A2 EP 0304959 W EP0304959 W EP 0304959W WO 03095079 A2 WO03095079 A2 WO 03095079A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- layer
- filter
- filter membrane
- membrane
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 68
- 239000002253 acid Substances 0.000 claims description 18
- 229920000642 polymer Polymers 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- -1 alkaline earth metal salts Chemical class 0.000 claims description 7
- 239000000644 isotonic solution Substances 0.000 claims description 7
- 239000002585 base Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- AEMOLEFTQBMNLQ-UHFFFAOYSA-N beta-D-galactopyranuronic acid Natural products OC1OC(C(O)=O)C(O)C(O)C1O AEMOLEFTQBMNLQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 5
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 4
- 235000010323 ascorbic acid Nutrition 0.000 claims description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 241000700605 Viruses Species 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 230000001717 pathogenic effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 241000224466 Giardia Species 0.000 claims description 2
- 150000000994 L-ascorbates Chemical class 0.000 claims description 2
- 239000011668 ascorbic acid Substances 0.000 claims description 2
- 229960005070 ascorbic acid Drugs 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims description 2
- 238000004113 cell culture Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 235000015097 nutrients Nutrition 0.000 claims description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 2
- 150000003873 salicylate salts Chemical class 0.000 claims description 2
- 229960004889 salicylic acid Drugs 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims description 2
- IAJILQKETJEXLJ-UHFFFAOYSA-N Galacturonsaeure Natural products O=CC(O)C(O)C(O)C(O)C(O)=O IAJILQKETJEXLJ-UHFFFAOYSA-N 0.000 claims 3
- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 claims 1
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 claims 1
- BHDKTFQBRFWJKR-UHFFFAOYSA-N 2-hydroxy-5-sulfobenzoic acid;dihydrate Chemical compound O.O.OC(=O)C1=CC(S(O)(=O)=O)=CC=C1O BHDKTFQBRFWJKR-UHFFFAOYSA-N 0.000 claims 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims 1
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 claims 1
- AEMOLEFTQBMNLQ-BZINKQHNSA-N D-Guluronic Acid Chemical compound OC1O[C@H](C(O)=O)[C@H](O)[C@@H](O)[C@H]1O AEMOLEFTQBMNLQ-BZINKQHNSA-N 0.000 claims 1
- AEMOLEFTQBMNLQ-YMDCURPLSA-N D-galactopyranuronic acid Chemical compound OC1O[C@H](C(O)=O)[C@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-YMDCURPLSA-N 0.000 claims 1
- AEMOLEFTQBMNLQ-AQKNRBDQSA-N D-glucopyranuronic acid Chemical compound OC1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-AQKNRBDQSA-N 0.000 claims 1
- AEMOLEFTQBMNLQ-VANFPWTGSA-N D-mannopyranuronic acid Chemical compound OC1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@@H]1O AEMOLEFTQBMNLQ-VANFPWTGSA-N 0.000 claims 1
- ABBQHOQBGMUPJH-UHFFFAOYSA-M Sodium salicylate Chemical compound [Na+].OC1=CC=CC=C1C([O-])=O ABBQHOQBGMUPJH-UHFFFAOYSA-M 0.000 claims 1
- FRHBOQMZUOWXQL-UHFFFAOYSA-K azane;2-hydroxypropane-1,2,3-tricarboxylate;iron(3+) Chemical compound N.[Fe+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O FRHBOQMZUOWXQL-UHFFFAOYSA-K 0.000 claims 1
- 229960004106 citric acid Drugs 0.000 claims 1
- 229960002303 citric acid monohydrate Drugs 0.000 claims 1
- 229940097043 glucuronic acid Drugs 0.000 claims 1
- 229920002674 hyaluronan Polymers 0.000 claims 1
- 229960003160 hyaluronic acid Drugs 0.000 claims 1
- 239000004313 iron ammonium citrate Substances 0.000 claims 1
- 235000000011 iron ammonium citrate Nutrition 0.000 claims 1
- PJAHUDTUZRZBKM-UHFFFAOYSA-K potassium citrate monohydrate Chemical compound O.[K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O PJAHUDTUZRZBKM-UHFFFAOYSA-K 0.000 claims 1
- FRMWBRPWYBNAFB-UHFFFAOYSA-M potassium salicylate Chemical compound [K+].OC1=CC=CC=C1C([O-])=O FRMWBRPWYBNAFB-UHFFFAOYSA-M 0.000 claims 1
- 229960003629 potassium salicylate Drugs 0.000 claims 1
- CONVKSGEGAVTMB-RXSVEWSESA-M potassium-L-ascorbate Chemical compound [K+].OC[C@H](O)[C@H]1OC(=O)C(O)=C1[O-] CONVKSGEGAVTMB-RXSVEWSESA-M 0.000 claims 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims 1
- 229960004025 sodium salicylate Drugs 0.000 claims 1
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 claims 1
- ZBTUYCUNQBRXOR-UHFFFAOYSA-L sodium succinate hexahydrate Chemical compound O.O.O.O.O.O.[Na+].[Na+].[O-]C(=O)CCC([O-])=O ZBTUYCUNQBRXOR-UHFFFAOYSA-L 0.000 claims 1
- PPASLZSBLFJQEF-RXSVEWSESA-M sodium-L-ascorbate Chemical compound [Na+].OC[C@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RXSVEWSESA-M 0.000 claims 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 claims 1
- 239000001384 succinic acid Substances 0.000 claims 1
- 229940014800 succinic anhydride Drugs 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000008367 deionised water Substances 0.000 description 10
- 229910021641 deionized water Inorganic materials 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 239000000835 fiber Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 6
- IAJILQKETJEXLJ-SQOUGZDYSA-N L-guluronic acid Chemical compound O=C[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O IAJILQKETJEXLJ-SQOUGZDYSA-N 0.000 description 5
- AEMOLEFTQBMNLQ-YBSDWZGDSA-N d-mannuronic acid Chemical compound O[C@@H]1O[C@@H](C(O)=O)[C@H](O)[C@@H](O)[C@H]1O AEMOLEFTQBMNLQ-YBSDWZGDSA-N 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 235000010443 alginic acid Nutrition 0.000 description 3
- 229920000615 alginic acid Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 235000010410 calcium alginate Nutrition 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 229940072056 alginate Drugs 0.000 description 2
- 239000000648 calcium alginate Substances 0.000 description 2
- 229960002681 calcium alginate Drugs 0.000 description 2
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002906 microbiologic effect Effects 0.000 description 2
- 229940021222 peritoneal dialysis isotonic solution Drugs 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000008237 rinsing water Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000199919 Phaeophyceae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 150000001860 citric acid derivatives Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 125000005613 guluronic acid group Chemical group 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004102 tricarboxylic acid cycle Effects 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- B01D69/107—Organic support material
- B01D69/1071—Woven, non-woven or net mesh
-
- 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
- B01D71/08—Polysaccharides
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
- C12M47/02—Separating microorganisms from the culture medium; Concentration of biomass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4005—Concentrating samples by transferring a selected component through a membrane
- G01N2001/4016—Concentrating samples by transferring a selected component through a membrane being a selective membrane, e.g. dialysis or osmosis
Definitions
- the invention relates to a filter membrane for the enrichment and / or separation of constituents from liquids and the use of the filter membranes for the stated purpose.
- a large number of filter membranes and filter media are known in the prior art, which are used in the most varied of examination methods. This includes, among other things, filter media and processes that have been developed for special tasks, but those posed Only partially meet requirements.
- the disadvantage of these materials and techniques in filtration is usually that, especially when quantifying microorganisms, such as bacteria, viruses, phages, pathogenic protozoa and particles in the submicro / Jmanometer range, quantitative detection is not always possible because of this The depth filter effect is so firmly anchored in the filter media that it can no longer be diagnosed quantitatively. On average, recovery rates of 30 to 40% are often realistic.
- the object of the present invention is to bring the components necessary for the production of filter membranes to interaction and to form them into a membrane which is as homogeneous as possible.
- Another object of the invention is to provide a membrane which is also suitable for larger quantities of liquids, for example aqueous media, in order to keep larger particles away from the membrane layer for as long as possible.
- the aforementioned object is achieved by a filter membrane for enriching and / or separating constituents from liquids, including a fleece-shaped one Carrier layer and a membrane layer in surface contact therewith, the membrane layer containing a polyuronic acid polymer.
- the invention relates to a filter membrane which is improved over the prior art and which can be used particularly advantageously in the area of enrichment and quantification of microbiological and particulate components in the submicron / nanometer range.
- nonwoven carrier layer provides various advantages according to the invention, since heterogeneous films and flakes are formed on the nonwoven fibers of the carrier layer by electrical potential formation, as a result of which the filter-active pores of the membrane layer are kept free of homogeneous film and flocculation components over a long period of time.
- a second embodiment of the present invention is that the filter membrane has a further fleece-shaped coarse filter layer in surface contact with the membrane layer Has.
- This coarse filter layer serves to retain larger particles and can likewise contribute to increasing the overall stability of the filter membrane according to the invention.
- the membrane layer contains a polyuronic acid polymer, preferably consists of a polyuronic acid copolymer.
- the nonwoven carrier layer and / or, if present, the coarse filter layer also contains a polyuronic acid copolymer or consists of a polyuronic acid polymer. It is of course to be ensured here that the respective non-woven layers are produced according to the desired properties and brought into contact with one another.
- the filter membrane is characterized in that the membrane layer, the carrier layer and / or the coarse filter layer contains a reactive agent.
- reactive agents include, for example, nutrient media, cell cultures, phages, viruses, catalysts, fluorescent markers and / or color markers.
- the filter membranes according to the invention are suitable for the enrichment and / or separation of any constituents from liquids.
- the open pore diameter of the membrane layer is particularly preferably in the range from 10 nm to 100 ⁇ m.
- filter membranes can be produced in which the polyuronic acid polymer is completely soluble in isotonic solution at room temperature.
- isotonic solutions include citrates and buffered citric acid itself; but also succinic acid, succinates, ascorbic acid and ascorbates, salicylic acid and salicylates, which dissolve the filter membranes at room temperature or at temperatures around 36 ° C.
- succinic acid, succinates, ascorbic acid and ascorbates, salicylic acid and salicylates which dissolve the filter membranes at room temperature or at temperatures around 36 ° C.
- the individual chemical compounds of these isotonic solutions are part of the citrate cycle.
- the components listed here can also advantageously be used in any mixtures to dissolve the membranes.
- alkali metal polyuronic acid polymers are essentially water-soluble, it is known that alkaline earth metal polyuronic acid polymers as well as aluminum polyuronic acid polymers are insoluble in water, but can be dissolved in isotonic solution.
- a further embodiment of the present invention is characterized in that the polyuronic acid polymer is derived from alkali metal and / or alkaline earth metal salts including ammonium and aluminum.
- Calcium alginate fibers or aluminum alginate fibers with the basic substance alginic acid, a polyuronic acid from the group of fiber polymers consisting of the monomers D-mannuronic and L-guluronic acid, are obtained from marine brown algae.
- the sodium alginate is dissolved in water and the solution is extruded into a calcium chloride bath, the sodium ions being replaced by calcium ions.
- This material is used, for example, for moist wound treatment due to the swellability of the calcium alginates and the intracapillary fluid and secretion absorption for wet wound treatment.
- the guluronic acid forms a connection with the calcium and also with the aluminum and thus initiates the formation of the continuously dispersed fiber of a hydrogel.
- the invention relates to a filter membrane which can preferably be used in the sector of determining and enriching microbiological and particulate components in drinking / waste water and in clinical, food technology, biotechnological and pharmaceutical fields.
- A. Production of membrane layer On a finely perforated sieve plate made of plastic or stainless steel, a commercially available polypropylene fleece, which was soaked with a 0.5 molar aluminum polychloride solution - after conditioning the fleece (removal of air bubbles) - was tensioned and with an equimolar L-guluron / D-mannuronic acid solution (0.5%) pulled out in a layer thickness of 0.5 mm. After a time of 20 seconds, the fleece was rinsed vigorously from below with deionized water, then flooded with deionized water from above and the rinsing water was removed by holding it at an angle. The membrane layer formed was not allowed to dry or dry out.
- This so-called top fleece was previously soaked with deionized water.
- the resulting membrane / fleece layer was covered with a plastic plate and placed on a shelf with the sieve plate facing upwards.
- the sieve plate and the polypropylene fleece were now removed and another fleece, impregnated with deionized water, in the form of the top fleece (as bottom or bottom fleece), was placed on the membrane which had now been placed on top.
- a roller was now used to roll lightly over the entire surface to remove any air bubbles. Subsequently, round filters were punched out in succession with a punching iron with a diameter of 5 cm, lifted off and kept under water. Sterilized filter membranes could be shrink-wrapped in film and kept in this way.
- the coarse fleece was produced by spraying the L-guluron / D-mannuronic acid solution described under A., whereby an aluminum solution described according to A. was atomized laterally by spraying so that intimate contact of the two components was ensured.
- the resulting fibers could be washed by spraying with deionized water, then compressed to a fleece of approx. 3 mm and dried.
- a commercially available polypropylene fleece which was soaked with a 1.5 molar aluminum polychloride solution - after conditioning the fleece (removal of air bubbles) - was tensioned on a finely perforated plastic or stainless steel sieve plate and stretched with an equimolar L-guluron / D-Mannuronic acid solution (1.5%) pulled out in a layer thickness of 2 mm. After a time of 180 seconds, the fleece was rinsed vigorously from below with deionized water, then flooded with deionized water from above and the rinsing water was removed by holding it at an angle. The membrane layer formed was not allowed to dry or dry out.
- This so-called upper fleece was previously soaked in deionized water.
- the resulting membrane / fleece layer was covered with a plastic plate and placed on a shelf with the sieve plate facing upwards.
- the sieve plate and the polypropylene nonwoven were now removed and another was placed on the membrane that had been produced and was now on top fleece soaked in deionized water, in the shape of the top fleece (as bottom or bottom fleece).
- the coarse fleece was produced by spraying the L-guluron / D-mannuronic acid solution described under A., whereby an aluminum solution described according to A. was atomized laterally by spraying so that intimate contact between the two components was ensured.
- the resulting fibers could be washed by spraying with deionized water, then pressed into a fleece of about 10 mm and dried.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Microbiology (AREA)
- Sustainable Development (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Biomedical Technology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003240229A AU2003240229A1 (en) | 2002-05-14 | 2003-05-13 | Filter membrane |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10221342A DE10221342A1 (de) | 2002-05-14 | 2002-05-14 | Filtermembran |
DE10221342.9 | 2002-05-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003095079A2 true WO2003095079A2 (de) | 2003-11-20 |
WO2003095079A3 WO2003095079A3 (de) | 2004-10-14 |
Family
ID=29413786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/004959 WO2003095079A2 (de) | 2002-05-14 | 2003-05-13 | Filtermembran |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003240229A1 (de) |
DE (1) | DE10221342A1 (de) |
WO (1) | WO2003095079A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009135936A1 (de) * | 2008-05-08 | 2009-11-12 | Aj Innuscreen Gmbh | Verfahren zur anreicherung und isolierung von biomolekülen oder viren |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1011853B (de) * | 1956-05-04 | 1957-07-11 | Dr Heinrich Thiele | Verfahren zur Herstellung von Membranen mit runden, geraden und gleichfoermigen Kapillarroehren |
DE1108665B (de) * | 1954-01-11 | 1961-06-15 | Dr Heinrich Thiele | Verfahren zur Herstellung von Membranen fuer Ultrafilter und Keimfilter und zur Dialyse aus Kolloiden |
DE1242576B (de) * | 1959-11-16 | 1967-06-22 | Dr Heinrich Thiele | Verfahren zur Gewinnung von in Fluessigkeiten dispergierten Teilchen mittels Filtration |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5436388A (en) * | 1977-08-26 | 1979-03-17 | Sumitomo Electric Ind Ltd | Porous polysaccharide and its preparation |
-
2002
- 2002-05-14 DE DE10221342A patent/DE10221342A1/de not_active Withdrawn
-
2003
- 2003-05-13 WO PCT/EP2003/004959 patent/WO2003095079A2/de not_active Application Discontinuation
- 2003-05-13 AU AU2003240229A patent/AU2003240229A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1108665B (de) * | 1954-01-11 | 1961-06-15 | Dr Heinrich Thiele | Verfahren zur Herstellung von Membranen fuer Ultrafilter und Keimfilter und zur Dialyse aus Kolloiden |
DE1011853B (de) * | 1956-05-04 | 1957-07-11 | Dr Heinrich Thiele | Verfahren zur Herstellung von Membranen mit runden, geraden und gleichfoermigen Kapillarroehren |
DE1242576B (de) * | 1959-11-16 | 1967-06-22 | Dr Heinrich Thiele | Verfahren zur Gewinnung von in Fluessigkeiten dispergierten Teilchen mittels Filtration |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Week 197917 Derwent Publications Ltd., London, GB; AN 1979-32582B XP002293105 & JP 54 036388 A (SUMITOMO ELECTRIC IND CO) 17. März 1979 (1979-03-17) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009135936A1 (de) * | 2008-05-08 | 2009-11-12 | Aj Innuscreen Gmbh | Verfahren zur anreicherung und isolierung von biomolekülen oder viren |
DE102008023297A1 (de) * | 2008-05-08 | 2009-11-12 | Aj Innuscreen Gmbh | Verfahren zur Anreicherung und Isolierung von Biomolekühlen oder Viren |
DE102008023297B4 (de) * | 2008-05-08 | 2014-06-26 | Aj Innuscreen Gmbh | Verfahren zur Anreicherung und Isolierung von Nukleinsäuren oder Viren |
US9006420B2 (en) | 2008-05-08 | 2015-04-14 | Timo Hillebrand | Method for concentrating and isolating biomolecules or viruses |
Also Published As
Publication number | Publication date |
---|---|
DE10221342A1 (de) | 2003-12-04 |
WO2003095079A3 (de) | 2004-10-14 |
AU2003240229A1 (en) | 2003-11-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Li et al. | Fabrication of pure chitosan nanofibrous membranes as effective absorbent for dye removal | |
DE3209127C2 (de) | ||
DE2436281A1 (de) | Sorptionsmaterial und verfahren zu dessen herstellung | |
DE2825636A1 (de) | Vorrichtung fuer mikrobiologische arbeiten | |
DE2257697A1 (de) | Poroese celluloseazetat-membran und verfahren zu ihrer herstellung | |
WO2010000450A2 (de) | Wundauflage mit hydrogelmatrix | |
CH651579A5 (de) | Verfahren zum selektiven zerstoeren einer permeablen membran. | |
DE2812174A1 (de) | Die blutgerinnung nicht foerdernde, biologisch vertraegliche gegenstaende | |
CH662363A5 (de) | Verfahren zum zuechten von zellen, die normalerweise nur eine mitose erfahren, wenn sie auf einem substrat fixiert sind. | |
WO1999051765A1 (de) | Verfahren zum nachweis von mikroorganismen in gasen | |
DE212010000186U1 (de) | Bakterizides Sorptionsmaterial | |
CH646185A5 (de) | Filtermaterial. | |
WO2013022016A1 (ja) | 排水処理用高分子多孔質膜 | |
WO2003095079A2 (de) | Filtermembran | |
DE3140445A1 (de) | Ionenaustauscherfiltermedium und verfahren zu seiner herstellung | |
DE2139646B2 (de) | Verfahren zur herstellung einer mikroporoesen scheidewand | |
DE19842528A1 (de) | Imprägnierte Fasermaterialien zur Wasser-, Getränke- und Nahrungsmittel-Reinigung | |
DE19914200B4 (de) | Membran mit einem leitfähigen Polymer sowie Verfahren zur Herstellung der Membran | |
EP1177829B1 (de) | Mit Blut und Gewebe verträgliche Membranen aus P(AN/NVP)-Misch-polymeren und deren Anwendung im medizinischen Bereich | |
DE2212573C3 (de) | Prüfmittel zur halbquantitativen Bestimmung der in einer Flüssigkeit enthaltenen Mikroorganismen | |
EP0751818A1 (de) | High-flux-dialysemembran aus polyacrylnitril | |
DE60202013T2 (de) | Pulverförmiger Wundverband und Verfahren zu seiner Herstellung | |
DE19943205C1 (de) | Verfahren zur Erzeugung, zum Transport und zur Eliminierung von biochemischen Stoffen mittels aktiver biologischer Zellen | |
DE3440557C1 (de) | Unterlage fuer das Zellwachstum in vitro und deren Verwendung | |
WO2017108788A1 (de) | Wundsystem enthaltend zwei stoffe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |