WO2022161559A1 - Élément filtrant pour filtrer des virus et/ou des bactéries dans un fluide - Google Patents

Élément filtrant pour filtrer des virus et/ou des bactéries dans un fluide Download PDF

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Publication number
WO2022161559A1
WO2022161559A1 PCT/DE2021/000181 DE2021000181W WO2022161559A1 WO 2022161559 A1 WO2022161559 A1 WO 2022161559A1 DE 2021000181 W DE2021000181 W DE 2021000181W WO 2022161559 A1 WO2022161559 A1 WO 2022161559A1
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Prior art keywords
equal
filter
weight
adsorbent
filter element
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PCT/DE2021/000181
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German (de)
English (en)
Inventor
Dejan Riljic
Oliver Riljic
Original Assignee
Apodis Gmbh
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Publication of WO2022161559A1 publication Critical patent/WO2022161559A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/022—Filtration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/01—Deodorant compositions
    • A61L9/014—Deodorant compositions containing sorbent material, e.g. activated carbon
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3234—Inorganic material layers
    • B01J20/3236—Inorganic material layers containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • B01J20/3244—Non-macromolecular compounds
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/14—Filtering means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0414—Surface modifiers, e.g. comprising ion exchange groups
    • B01D2239/0421—Rendering the filter material hydrophilic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0442—Antimicrobial, antibacterial, antifungal additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0464—Impregnants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0613—Woven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0618—Non-woven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/08—Special characteristics of binders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/04—Surfactants, used as part of a formulation or alone

Definitions

  • Filter element for filtering viruses and/or bacteria from a fluid
  • the present invention relates to a filter element for filtering viruses and/or bacteria from a fluid, in particular from air and/or water, with a filter medium which has an adsorbent, in particular chemisorbent, on its filter medium surface, and a filter system for filtering air and/or or water.
  • the present invention also relates to a method for producing a filter element for filtering viruses and/or bacteria from a fluid, and the use of a material composition for filtering viruses and/or bacteria from a fluid.
  • Virus particles are particularly difficult to separate in terms of their size of 80-300 nm in relation to fibers in the 1000-5000 nm range.
  • a particle is separated mainly by the barrier effect of textile fibers. Due to this pure physisorption, particles such as viruses can get back into the air flow.
  • Filter fabrics for the filtration of viruses only physically adsorb the virus particles on the fiber surfaces. Since mostly inert fiber materials such as cellulose fibers or synthetic fibers based on polyester or polyolefins are used, the viruses or virus aerosols and bacteria on the fiber surfaces remain infectious.
  • infections with a more severe course of the disease can be triggered by the increased viral load.
  • a biofilm can form, which can lead to microorganisms breaking through into the filtered air.
  • a virus-adsorbing and antiviral effect is also ascribed to chitosan as a biopolymer.
  • EP 2 849 763 B1 describes the use of chitopolymers, in particular chitosan, in the treatment and prevention of corona virus diseases.
  • DE 3620168 A1 discloses a chemisorption filter for treating breathing air for people suffering from allergies
  • the approach presented here presents a filter element for filtering viruses and/or bacteria from a fluid, in particular air and/or water, with a filter medium which has an adsorbent, in particular chemisorbent, on its filter medium surface, with the Adsorbent for virucidal and/or bactericidal action
  • - has at least one surfactant.
  • a breathing mask or face mask is presented with a filter element as described above.
  • a method for producing a filter element for filtering viruses and/or bacteria from a fluid, in particular air and/or water, in particular a filter element described above with the following steps:
  • an adsorbent suspension in particular chemisorbent suspension, comprising o aluminum hydroxide, in particular aluminum trihydrate, and/or chitosan; and o at least one surfactant;
  • the present invention relates to the use of a material composition - aluminum hydroxide, in particular aluminum trihydrate, and/or chitosan; and
  • At least one surfactant in particular in a coating and/or impregnation of a filter medium, for filtering viruses and/or bacteria from a fluid, in particular from air and/or water.
  • the fluid is preferably air and/or water.
  • the filter element is preferably designed as an air filter and/or water filter.
  • the filter element is preferably designed or set up for use or installation in air purification systems or air filter systems and/or water filter systems.
  • the filter element can be designed as a breathing filter.
  • the filter element can preferably be designed or set up for use in breathing masks or face masks.
  • the filter medium is solid or designed as a solid.
  • the filter medium preferably has a filter fabric and/or a filter fleece and/or a filter mat or consists of a filter fabric and/or a filter fleece and/or a filter mat.
  • the filter medium can have or consist of cellulose, for example.
  • the filter medium can be designed as a filter layer, e.g. as a filter fabric layer and/or a filter fleece layer and/or a filter mat.
  • the filter medium is understandably designed to be physically and/or chemically connectable to the absorbent.
  • the filter medium is designed to form or enter into a physical and/or chemical connection with the adsorbent.
  • the filter medium can be designed such that it can be painted and/or connected to a binding agent.
  • the filter medium can also be pretreated accordingly, for example by treatment using ozone, plasma, etc.
  • the filter medium is preferably coated and/or impregnated with the adsorbent.
  • the filter element preferably has an adsorption layer or an adsorption film with the adsorbent, which is arranged on the filter medium surface of the filter medium.
  • the adsorbent is virucidal and/or bactericidal or has a virucidal and/or bactericidal effect.
  • the adsorbent is preferably designed to bind and inactivate or “kill” viruses and/or bacteria by chemisorption.
  • the adsorbent is preferably a chemisorbent and analogously the adsorbent suspension is preferably a chemisorbent suspension.
  • the adsorbent includes aluminum hydroxide and/or chitosan.
  • the aluminum hydroxide is preferably aluminum trihydrate.
  • the particle size of the aluminum trihydrate is preferably in a range from greater than or equal to 5 ⁇ m to less than or equal to 35 ⁇ m, preferably in a range from greater than or equal to 5 ⁇ m to less than or equal to 15 ⁇ m.
  • the proportion of aluminum hydroxide in the adsorbent is preferably in a range from greater than or equal to 39.5% by weight to less than or equal to 59.5% by weight.
  • the proportion of chitosan in the adsorbent is preferably in a range from greater than or equal to 10% by weight to less than or equal to 20% by weight.
  • the adsorbent also has at least one surfactant.
  • the surfactant here is preferably a strong fat-dissolving surfactant.
  • the proportion of the at least one surfactant in the adsorbent is preferably in a range from essentially greater than or equal to 0.01% by volume to less than or equal to 0.5% by volume.
  • the at least one surfactant can include or consist of at least one nonionic surfactant, in particular a fatty acid ethoxylate.
  • the at least one surfactant can have or consist of at least one ionic surfactant, in particular based on alkanesulfonates.
  • the surfactant can also include or consist of mixtures of surfactants.
  • the adsorbent preferably also has a binder which, in particular, has or consists of polyurethane and/or an amine component.
  • the present invention provides a very effective and inexpensive filter element for filtering viruses and/or bacteria from a fluid, in particular air and/or water, the viruses and/or bacteria on a filter medium surface advantageously at the moment of deposition (in situ) be inactivated.
  • the adsorbent contains aluminum hydroxide, in particular aluminum trihydrate, and/or chitosan for the virucidal and/or bactericidal effect; and at least one surfactant.
  • This adsorbent enables effective, irreversible chemisorption of viruses and/or bacteria on the filter medium surface, with the membrane of the viruses and/or bacteria also being broken up or dissolved by means of the at least one surfactant after chemisorption has taken place, and the viruses and/or bacteria thus being effectively in situ be inactivated.
  • the filter element according to the invention not only chemisorbs the viruses and/or bacteria from a fluid very effectively, but also inactivates them sustainably "in situ", so that - in contrast to only physisorbed microbiologically active particles - the introductory
  • the risk of increased viral load described above is solved and this provides protection against infection for people when the filter is replaced.
  • no chemically potent disinfectants based on chlorine or peroxide are required for this. Due to the composition, which is harmless to human health, the filter element can advantageously also be used as a breathing filter , especially used in respirators.
  • the filter medium surface with the adsorbent and/or the adsorption layer or the adsorption film is hydrophilic, in particular strongly hydrophilic. It is particularly advantageous here if the filter medium surface with the adsorbent and/or the adsorption layer or the adsorption film is designed in such a way that water forms a contact angle of less than or equal to 25° on it. This allows the interaction with a virus or a virus membrane and / or a Bacterium or a bacterial membrane and thus the filter effectiveness of the filter element can be further increased.
  • the proportion by weight of the adsorbent remaining at 100% by weight is filled with water, in particular the adsorbent has a water content in a range from greater than or equal to 15% by weight to less than or equal to 20% by weight .
  • the filter medium surface can advantageously have water, in particular a moisture content in a range from greater than or equal to 0.05 g/m 2 to less than or equal to 0.5 g/m 2 .
  • the hydrophilicity of the filter medium surface can be provided or increased with the adsorbent and/or the adsorption layer or the adsorption film.
  • the adsorbent is designed as an open-pored adsorption layer and/or as an open-pored adsorption film on the filter medium surface. It is particularly advantageous here if the open-pore adsorption layer and/or the open-pore adsorption film has an inner surface area of greater than or equal to 0.6 m 2 /g and less than or equal to 3 m 2 /g.
  • open-pored adsorption layers or adsorption films are highly hydrophilic and offer a large reactive surface area for adsorption or chemisorption and exhibit a very low or minimal pressure drop. The latter is extremely important for use in filter systems or cleaning systems, since filter modifications or filter coatings must not significantly impair or negatively influence the function of the filter/filter element, mainly with regard to the pressure drop.
  • the adsorbent or the adsorption layer/adsorption film has the following composition:
  • - aluminum hydroxide in a range from greater than or equal to 39.5% by weight to less than or equal to 59.5% by weight;
  • - chitosan in a range from greater than or equal to 10% by weight to less than or equal to 20% by weight; at least one surfactant in a range of greater than or equal to 0.01% by volume to less than or equal to 0.5% by volume;
  • - binders in particular polyurethane binders, in a range from greater than or equal to 10% by weight to less than or equal to 30% by weight;
  • An open-pore adsorption layer and/or an open-pore adsorption film with this composition and in particular an inner surface area of greater than or equal to 0.6 m 2 /g to less than or equal to 3 m 2 /g represents an optimal ratio of filter effectiveness and tolerable pressure drop.
  • the filter system for filtering air and/or water with a filter element as described above has a spray device which is designed to To humidify the filter element and/or the air to be filtered (sucked in).
  • a spray device which is designed to To humidify the filter element and/or the air to be filtered (sucked in).
  • the hydrophilicity and thus the filter effectiveness of the filter system can be adjusted and/or maintained, in particular during operation.
  • the sprayed water can condense on the virus particles or bacterial particles in the air to be filtered (sucked in), which improves the separation of the viruses or bacteria on the filter element and thus further improves the filter effectiveness of the filter system.
  • the filter system there is a sensor unit for determining the humidity on the filter element and/or in the air to be filtered, and a control unit or regulating unit, which is designed to control or to control the spray device depending on the determined humidity regulate, are provided.
  • a control unit or regulating unit which is designed to control or to control the spray device depending on the determined humidity regulate
  • the filter medium is sprayed with the adsorbent suspension by means of a spray device, in particular with a spray pressure in the range of 0.5 bar.
  • a spray device in particular with a spray pressure in the range of 0.5 bar.
  • HVLP High Volume Low Pressure
  • the rebound effect on the filter medium surface is very low, so that the adsorbent suspension can penetrate deep into the three-dimensional structure of the filter medium or the filter layer without sticking. It is helpful here if, on the side opposite the sprayed filter medium surface side, suck in such a way that the spray mist of the adsorbent suspension is drawn through the filter medium.
  • a step of heating the filter medium in particular to a temperature in the range of 100° C., by means of a heating device is carried out before the step of applying the adsorbent suspension.
  • a step of moistening the filter element by means of a spray device is carried out after the step of applying the adsorbent suspension.
  • An HVLP (High Volume Low Pressure) spray gun for example, can be used as the spray device. It has been found that the subsequent moistening of the filter element leads to alkalinity in the area of the aluminum hydroxide or the aluminum trihydrate particles, as a result of which the adsorption effect of the virus particles or bacterial particles is further improved.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Public Health (AREA)
  • Inorganic Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Zoology (AREA)
  • Materials Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Pulmonology (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filtering Materials (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

L'invention concerne un élément filtrant destiné à filtrer des virus et/ou des bactéries dans un fluide, en particulier de l'air et/ou de l'eau, comprenant un milieu filtrant qui présente un adsorbant, en particulier un chimisorbant, au niveau de sa surface de milieu filtrant. Selon l'invention, l'adsorbant, pour assurer un effet virucide et/ou bactéricide, comprend de l'hydroxyde d'aluminium, en particulier du trihydrate d'aluminium et/ou du chitosane ; et au moins un tensioactif.
PCT/DE2021/000181 2021-01-28 2021-11-04 Élément filtrant pour filtrer des virus et/ou des bactéries dans un fluide WO2022161559A1 (fr)

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DE102021000579.1 2021-01-28
DE102021000579.1A DE102021000579B3 (de) 2021-01-28 2021-01-28 Filterelement zur Filterung von Viren und/oder Bakterien aus einem Fluid, Filteranlage, Atemschutzmaske, Verfahren zur Herstellung des Filterelements und Verwendung einer Materialzusammensetzung

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EP0679405A1 (fr) 1994-04-25 1995-11-02 Rotkreuzstiftung Zentrallaboratorium Blutspendedienst Srk Procédé pour séparer les virus contenus dans une solution de protéine
JPH09220519A (ja) * 1996-02-16 1997-08-26 Mitsubishi Paper Mills Ltd 酸化チタン含有積層シートの製造方法
WO2003039713A1 (fr) * 2001-10-19 2003-05-15 Innovative Construction And Building Materials, Llc Materiau de filtration d'air anti-pathogenes et dispositifs de traitement d'air offrant une protection contre les microorganismes infectieux en suspension dans l'air
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EP1808525A1 (fr) * 2004-11-02 2007-07-18 T.I. Research Laboratory Ltd. Feuilles à utiliser dans des filtres, des masques et ainsi de suite ayant un effet bactéricide
WO2008105934A2 (fr) * 2006-09-22 2008-09-04 Oregon Biomedical Engineering Institute, Inc. Utilisation de chitosane pour inactiver des agents toxiques et pathogènes
WO2010072288A2 (fr) * 2008-12-16 2010-07-01 Trovotech Gmbh Suspension destinée à traiter des filtres ou des matériaux filtrants, procédé de traitement de filtres ou matériaux filtrants et filtres ou matériaux filtrants pourvus d'un revêtement biocide
KR20130019313A (ko) * 2011-08-16 2013-02-26 한국화학연구원 초미립자 여과 및 살균효과가 우수한 공기필터
WO2013075018A1 (fr) * 2011-11-17 2013-05-23 University Of Kansas Filtre en céramique à surface modifiée
CN104524866A (zh) * 2014-12-04 2015-04-22 上海洁晟环保科技有限公司 复合抗菌空气过滤材料及其制备方法
EP2849763B1 (fr) 2012-05-18 2017-10-25 Uniwersytet Jagiellonski Polymeres de chitosan pour le traitement et la prevention des infections provoquées par une espèce du genre corona
WO2019067487A1 (fr) * 2017-09-27 2019-04-04 Georgia-Pacific Nonwovens LLC Milieu de filtration d'air non tissé
CN112007426A (zh) * 2020-07-08 2020-12-01 山东联科科技股份有限公司 一种高性能介孔二氧化硅-壳聚糖复合的抗菌过滤片的制备方法

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EP3804550A1 (fr) 2016-08-26 2021-04-14 Livinguard AG Masque facial résistant au lavage ayant des propriétés antimicrobiennes et/ou une capacité de lavage améliorée

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620168A1 (de) 1986-06-14 1987-12-17 Hoelter Heinrich Dipl Ing Chemisorptionsfilter zur behandlung von atemluft fuer allergieerkrankte menschen
EP0679405A1 (fr) 1994-04-25 1995-11-02 Rotkreuzstiftung Zentrallaboratorium Blutspendedienst Srk Procédé pour séparer les virus contenus dans une solution de protéine
JPH09220519A (ja) * 1996-02-16 1997-08-26 Mitsubishi Paper Mills Ltd 酸化チタン含有積層シートの製造方法
WO2003039713A1 (fr) * 2001-10-19 2003-05-15 Innovative Construction And Building Materials, Llc Materiau de filtration d'air anti-pathogenes et dispositifs de traitement d'air offrant une protection contre les microorganismes infectieux en suspension dans l'air
US20050133035A1 (en) * 2003-12-18 2005-06-23 Kimberly-Clark Worldwide, Inc. Facemasks containing an anti-fog / anti-glare composition
EP1808525A1 (fr) * 2004-11-02 2007-07-18 T.I. Research Laboratory Ltd. Feuilles à utiliser dans des filtres, des masques et ainsi de suite ayant un effet bactéricide
RU2297269C1 (ru) * 2005-12-15 2007-04-20 Общество с ограниченной ответственностью "Аквазон" Способ получения фильтрующего материала
WO2008105934A2 (fr) * 2006-09-22 2008-09-04 Oregon Biomedical Engineering Institute, Inc. Utilisation de chitosane pour inactiver des agents toxiques et pathogènes
WO2010072288A2 (fr) * 2008-12-16 2010-07-01 Trovotech Gmbh Suspension destinée à traiter des filtres ou des matériaux filtrants, procédé de traitement de filtres ou matériaux filtrants et filtres ou matériaux filtrants pourvus d'un revêtement biocide
KR20130019313A (ko) * 2011-08-16 2013-02-26 한국화학연구원 초미립자 여과 및 살균효과가 우수한 공기필터
WO2013075018A1 (fr) * 2011-11-17 2013-05-23 University Of Kansas Filtre en céramique à surface modifiée
EP2849763B1 (fr) 2012-05-18 2017-10-25 Uniwersytet Jagiellonski Polymeres de chitosan pour le traitement et la prevention des infections provoquées par une espèce du genre corona
CN104524866A (zh) * 2014-12-04 2015-04-22 上海洁晟环保科技有限公司 复合抗菌空气过滤材料及其制备方法
WO2019067487A1 (fr) * 2017-09-27 2019-04-04 Georgia-Pacific Nonwovens LLC Milieu de filtration d'air non tissé
CN112007426A (zh) * 2020-07-08 2020-12-01 山东联科科技股份有限公司 一种高性能介孔二氧化硅-壳聚糖复合的抗菌过滤片的制备方法

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