CN100482316C - Microbe filter made from micropore ceramics - Google Patents
Microbe filter made from micropore ceramics Download PDFInfo
- Publication number
- CN100482316C CN100482316C CNB2005100855301A CN200510085530A CN100482316C CN 100482316 C CN100482316 C CN 100482316C CN B2005100855301 A CNB2005100855301 A CN B2005100855301A CN 200510085530 A CN200510085530 A CN 200510085530A CN 100482316 C CN100482316 C CN 100482316C
- Authority
- CN
- China
- Prior art keywords
- filter
- micropore ceramics
- synthos
- ceramic
- ceramics
- 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.)
- Expired - Fee Related
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 59
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 241000700605 Viruses Species 0.000 claims abstract description 14
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 22
- 239000011148 porous material Substances 0.000 claims description 19
- 230000003115 biocidal effect Effects 0.000 claims description 13
- 239000003139 biocide Substances 0.000 claims description 13
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 5
- 230000000813 microbial effect Effects 0.000 claims 2
- 241000894006 Bacteria Species 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000003242 anti bacterial agent Substances 0.000 abstract 1
- 229940088710 antibiotic agent Drugs 0.000 abstract 1
- 239000004068 calcium phosphate ceramic Substances 0.000 abstract 1
- 244000005700 microbiome Species 0.000 description 10
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 9
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 9
- 241000588724 Escherichia coli Species 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 239000012528 membrane Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000007170 pathology Effects 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 230000003612 virological effect Effects 0.000 description 3
- 241000702263 Reovirus sp. Species 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 239000003462 bioceramic Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 101710134784 Agnoprotein Proteins 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 241000701370 Plasmavirus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000840 anti-viral effect Effects 0.000 description 1
- 230000002155 anti-virotic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000035 biogenic effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- -1 calcium phosphate compound Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 231100001083 no cytotoxicity Toxicity 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Filtering Materials (AREA)
Abstract
A millipore ceramic type microbe filter for treating the gas or liquid containing bacteria and viruses features that the milliporous calcium phosphate ceramic is used as the filtering medium and the antibiotic agent is combined with said filtering medium. Its advantage is high effect to remove and kill the bacteria and viruses.
Description
Technical field
The invention belongs to medical and the filtering material field use in life, particularly be used to handle and contain bacterium and viral gas or a kind of microbe filter made from micropore ceramics of liquid.
Background technology
The bacterium or the virus filter of report mainly contain at present:
(1) S Brinker-Sai Feiersi, this invention of R pula " from water, physically removing the filter for installation of bacterial suspended matter and solid particle " (No. the 1196518th, Chinese patent).This invention adopts the lamina membranacea of compact arranged hollow fibre composition as filtration members, has the slit (width) between 0.001 ~ 1.0 μ m between the hollow fibre membranous wall, can filter bacterium and solid phase particles from water.
(2) " a kind of method and apparatus that human plasma virus is filtered " (the Chinese patent CN1531978A) of people such as Wang Xiaoning invention.The method that this device adopts the organic polymer perforated membrane or has the filter membrane of compatibility to combine to virus is come the virus in the separated plasma.
(3) by the filtering material in the European patent EP 0673667 (September 27 nineteen ninety-five) of " the filter sheet " of people such as Tsuru Sumiaki application.This filtering material is scattered in the high-molecular organic material powder of calcium phosphate compound or porous particle as filtering medium, is used for filtering noxious gas and virus.
(4) by S.Masmoudi, R.Ben Amar, A.Larbot, H.El Feki, A.Ben Salah, L.Cot be published in " Journal of Membrane Science " go up (2005, Vol.247:1-9) be entitled as the ceramic filter in " Elaboration of inorganic microfiltration membranes withhydroxyapatite applied to the treatment of wastewater from sea productindustry ".The author is particle coated in the porous cordierite supporting body surface with hydroxylapatite ceramic, has formed the about 32.5 μ m of a layer thickness behind drying and 600 ℃ of sintering on the porous cordierite supporter, and average pore size is 0.5 μ m, and the porosity is 48% filter membrane.This ceramic filter can be used for filtering organic components, bacterium and the salinity in the marine products production waste.
(5) Suguru Suzuki, Kenji Itoh, Masako Ohgaki, Masaya Ohtani, MasakuniOzawa was published in " Ceramics International " 1999, was entitled as ceramic filter in " Preparation of sintered filter for ion exchange by a doctor blademethod with aqueous slurries of needlelike hydroxyapatite " on the 25th volume 287-291 page or leaf.This ceramic filter utilizes the synthetic hydroxylapatite ceramic powder with needle-like crystalline form of sol-gal process as raw material, through the moulding of scraper casting technique, form at high temperature sintering.The pore-size distribution of this porous ceramics does not wait from several microns to tens microns, is tested to be used for filtering to contain heavy metal Pb
2+Ion solution (0.025mol/L), result show once to filter can remove 59% Pb
2+, 5 filtrations just can be removed the Pb in the solution fully
2+They find that this filter has good adsorption effect (0.Takagi to protein recently, N.Kuramoto, M.Ozawa, S.Suzuki are published in be entitled as " the Adsorption/desorption of acidic andbasic proteins on needle-like hydroxyapatite filter prepared by slipcasting " on " Ceramics International " 2004 the 30th volumes 139-143 page or leaf).
The basic principle of mentioned microorganism filter is a mechanical stop, and the aperture of selected filtering medium must be less than the size of the microorganism of being filtered.Though these filters can filter the bacterium that diameter is 0.5-5 μ m, being difficult to filter diameter is the virus of 10-500nm.This is because prior art is difficult to produce the poromerics with nanometer scale on the one hand, and promptly allow to prepare nanoaperture on the other hand, needed pressure will be very big during filtration, and the microorganism that is trapped can promptly stop up filter membrane, causes filter pressure to increase severely and filter failure.Though above-mentioned some filter has also utilized adsorption effect, because their general employing membrane structures or aperture are bigger, adsorption effect is limited.
Summary of the invention
The purpose of this invention is to provide a kind of can effectively filter bacterium and virus, to human body and the harmless microbe filter made from micropore ceramics of environment totally nontoxic, it is characterized in that: described microbe filter made from micropore ceramics is as filtering medium with the synthos micropore ceramics;
The porosity scope of described synthos micropore ceramics is 10%～75%.
Pore diameter scope in the described synthos micropore ceramics is 0.1 μ m～200 μ m.
The another kind of filtering medium of described microbe filter made from micropore ceramics is for adopting the synthos micropore ceramics that is compounded with biocide.
The invention has the beneficial effects as follows with the main media of micropore synthos bioceramic as microbe filter, fully harmless and good compatibility is arranged to human body with living organism.Micropore ceramics has a large amount of sub-micron porosity, can effectively adsorb virus and the bacterium very little with blockage size, in micropore ceramics, introduce the interconnected pore, large aperture of certain volume simultaneously, make filter when keeping filter effect, have the good penetration performance and be not easy blocked, and then service life of having improved filter efficiency and filter.Also further promote product killing and suppress effect to microorganism by compound biocide in filtering medium.
The specific embodiment
The invention provides a kind of microbe filter made from micropore ceramics.This microbe filter made from micropore ceramics is as filtering medium with the synthos micropore ceramics.And compound biocide further promotes product killing and suppress effect microorganism in as the synthos micropore ceramics of filtering medium.Exemplifying embodiment is below illustrated.
Embodiment 1
With the synthos ceramic powder with as the water soluble starch of pore creating material and soluble starch by volume 4:3:3 in deionized water, fully mix, resulting slurry drying, grinding, after sieving, dry-pressing formed.Place chamber type electric resistance furnace to obtain porous ceramics compressing tablet at 1200 ℃ of sintering.The porous ceramics outward appearance that sinters into is regular, tests its Main Ingredients and Appearance through XRD and is still synthos.This ceramic porosity is 50%, SEM observes and shows that pottery contains the bigger connection pore of sub-micron porosity and aperture simultaneously, the pore size distribution range of sub-micron porosity is between 0.1 μ m～1 μ m, the pore size distribution range that is communicated with pore does not wait from several microns to tens microns, and the volume that is communicated with pore accounts for 38% of ceramic cumulative volume.
This ceramic filter is used to filter concentration greater than 10
5The Escherichia coli suspension of individual/ml, the result shows that 100% Escherichia coli can be filtered by this ceramic filter.SEM observes and shows that Escherichia coli are attracted in the calcium phosphate micropore ceramics, and wherein the Escherichia coli of some are directly stopped by sub-micron porosity.Illustrate that this ceramic filter has tangible filter effect to bacterium.
It is 100TCID that this ceramic filter is used to filter titre
50The reovirus of/ml (3 type) suspension is inoculated in the HeLa cell to observe the infection ability of virus with the viral suspension after filtering.The result shows, do not have the cytopathy that can examine two days later through the sample that filters, and had part cell generation pathology in the not filtered sample in contrast this moment; After five days, the whole cell generation pathologies in the sample of filtered, and have only 25～50% cell generation pathology through filtered sample, illustrate that this ceramic filter has filtration or suppresses effect virus.
Embodiment 2
It is the AgNO of 0.2mol/L that ceramic filter described in the embodiment 1 is placed concentration
3Soak after 1 hour in the solution and take out, 60 ℃ of dryings.The XRD test shows to also have Ag outside these ceramic main component synthos
3PO
4, illustrate that the silver ion biocide has been compound in the ceramic filter by displacement reaction.
Place concentration greater than 10 this ceramic filter
5In the Escherichia coli suspension of individual/ml, test the effect of its kill bacteria through fask oscillating method.The result shows that 100% Escherichia coli are killed or suppress, the antibacterial effect of the ceramic filter that illustrates the silver ion biocide compound and can further improve.
This ceramic filter is used to filter reovirus (3 type) suspension, and method is identical with embodiment 1 with condition.The result shows, all do not make cell that the pathology that can examine takes place through sample first three day of filtering, and this result obviously is better than the result among the embodiment 1.After five days,, observe in detail and show that the number of cell generation pathology obviously is less than the cell number of the process filtered sample generation pathology among the embodiment 1 though also have 25 ~ 50% cell that pathology has taken place through the sample that filters.The antiviral effect of The above results explanation the is compound ceramic filter that the silver ion biocide can further improve.
Comparative example 1
The synthos ceramic powder is mixed in deionized water with organic monomer and surfactant, utilize the green compact of the in-situ polymerization moulding porous ceramics that stirs bubble and organic monomer, place chamber type electric resistance furnace after drying at 1200 ℃ of sintering.The porous ceramics porosity that sinters into is 79%, SEM observes it and contains the very big connection pore in aperture, the pore-size distribution broad of hole, scope at several micron between the 270 μ m, the volume that is communicated with pore accounts for 63% of ceramic cumulative volume, does not contain the pore structure of sub-micron substantially.
The bacterium filter result shows, has only 66.7% Escherichia coli to be filtered.This ceramic filter of this presentation of results is failed filtering microorganism effectively.
The selected synthos of the present invention are one of most important biogenic minerals of nature, it is the main inorganic composition of nature bone and tooth, its representative is a hydroxyapatite, up to the present, with the hydroxyapatite be the synthos pottery of representative be proved to be have good biocompatibility, no cytotoxicity and can form good advantages such as bonding with bone tissue, therefore studied and be used in substituting and transplanting of bone tissue widely.Select for use the synthos bioceramic can guarantee that product safety is nontoxic.
The complicated structure of synthos pottery makes it have a lot of displacements or absorption position, for example comprises Ca in the hydroxyapatite
2+The ion exchange position or the adsorption potential that form, (PO
4)
3-The ion exchange position or the adsorption potential that form, and (OH)
-The hydrogen bonds that form etc. prove hydroxyapatite to various zwitterions, and protein and large biological molecule have displacement or suction-operated.The inventor has tangible adsorption effect by having studies confirm that this synthos pottery to bacterium and virus, and because the synthos pottery of porous has very large specific area, therefore is suitable as very much filtration and the sorbing material of microorganism.Studies show that suitable interconnected pore is of a size of 5～200 μ m, the volume of intercommunicating pore is 5～60% of a ceramic volumetric.The interconnected pore is oversize, and quantity too much makes microorganism not be adsorbed by filter fast with fluid easily or stops, causes filter failure.The aperture is too small or the intercommunicating pore volume is too small, then is difficult to be communicated with.
The porosity is an important parameter that influences ceramic filter efficient and filter pressure.It is airtight that the porosity is lower than 10% pottery, and the porosity is higher than that 75% pottery can take place to destroy when filtering or effective filtering microorganism.
Research finds that also on above-mentioned synthos microporous ceramic filter compound biocide can further improve filter killing and suppress effect microorganism.Advantages such as it is obvious that the silver ion biocide that is adopted has the anti-bacteria and anti-virus effect, and effectiveness is lasting be widely used in medicine equipment, cleaners and polishes and daily necessities, and the security of argentum-carried hydroxylapatite are accepted by the World Health Organization.
The present invention by further on above-mentioned filtering medium compound biocide obtain having the filter product of obvious kill bacteria and viral effect.Selected biocide also is safe and harmless to human body, thereby has guaranteed the safety of entire product and harmless.
Claims (4)
1. microbe filter made from micropore ceramics, it is characterized in that: this microbe filter is a kind of microbial virus filter, and described microbial virus filter is as filtering medium with synthos porous ceramics with 0.1 μ m＜pore diameter≤1 μ m micropore.
2. according to the described microbe filter made from micropore ceramics of claim 1, it is characterized in that the pore diameter scope of described synthos micropore ceramics is 0.1 μ m＜pore diameter≤200 μ m, porosity scope is 10%-75%.
3. according to claim 1 or 2 described microbe filter made from micropore ceramics, it is characterized in that the synthos micropore ceramics also contains biocide.
4. according to the described microbe filter made from micropore ceramics of claim 3, it is characterized in that described biocide is the silver ion biocide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100855301A CN100482316C (en) | 2005-07-26 | 2005-07-26 | Microbe filter made from micropore ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100855301A CN100482316C (en) | 2005-07-26 | 2005-07-26 | Microbe filter made from micropore ceramics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1727032A CN1727032A (en) | 2006-02-01 |
| CN100482316C true CN100482316C (en) | 2009-04-29 |
Family
ID=35926665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100855301A Expired - Fee Related CN100482316C (en) | 2005-07-26 | 2005-07-26 | Microbe filter made from micropore ceramics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100482316C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG157290A1 (en) * | 2008-05-09 | 2009-12-29 | Millipore Corp | Method for reducing performance variability of multi-layer filters |
| CN102553355B (en) * | 2011-09-06 | 2014-11-19 | 华润双鹤药业股份有限公司 | Application of clay material, ceramic material and glass material in preparation of pulmonary surfactant extract of calf, pig or other mammals |
| CN104474789B (en) * | 2011-09-06 | 2016-09-14 | 华润双鹤药业股份有限公司 | China clay material, ceramic material and the glass material purposes in preparation cattle, pig or other mammal lung surface active extracts |
| CN102745815A (en) * | 2012-06-29 | 2012-10-24 | 宋瑞平 | Domestic sewage and wastewater advanced centralized treatment process |
| CN108355401B (en) * | 2018-02-09 | 2021-01-08 | 纳琦环保科技有限公司 | Preparation method of inorganic porous purification filter element |
-
2005
- 2005-07-26 CN CNB2005100855301A patent/CN100482316C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1727032A (en) | 2006-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI284055B (en) | Microporous filter media, filtration systems containing same, and methods of making and using | |
| JP2004507339A (en) | Formation of composite materials with expansive substances | |
| RU2426579C2 (en) | Filter for drinking water tertiary treatment | |
| CN106310978B (en) | Composite air filter membrane based on chitosan and graphene oxide and preparation method thereof | |
| JP5718309B2 (en) | Nonwoven media incorporating ultrafine or nano-sized powder | |
| CN106518006A (en) | In-situ composite antibacterial filtering ceramic as well as preparation method and application thereof | |
| CA2752109C (en) | Microporous filter media with intrinsic safety feature | |
| CN103402563A (en) | Electrosorption and decomposition device for the purification of blood and other fluids | |
| Zheng et al. | Nano-TiO2 membrane adsorption reactor (MAR) for virus removal in drinking water | |
| CN100482316C (en) | Microbe filter made from micropore ceramics | |
| WO2007149606A2 (en) | Drinking water filtration device | |
| CN108905968A (en) | A kind of preparation method and water purification catridge of graphene oxide composite filter element material | |
| RU2426557C1 (en) | Sorption-bactericidal material, method of its obtaining, method of filtering liquid or gaseous media, medical sorbent | |
| Zainol Abidin et al. | Polysulfone/iron oxide nanoparticles ultrafltration membrane for adsorptive removal of phosphate from aqueous solution | |
| Alrafai et al. | The degradation of methylene blue dye using copper-doped hydroxyapatite encapsulated into polycaprolactone nanofibrous membranes | |
| Arumugham et al. | Recent advances in bioceramic-based nanocomposites for membrane and adsorption separation processes: A review | |
| Yang et al. | Development and characterization of porous silver‐incorporated hydroxyapatite ceramic for separation and elimination of microorganisms | |
| CN109789374B (en) | Filter medium for removing or inactivating microorganisms from water | |
| Gupta et al. | Development of carbon nanotube-metal organic framework (MOF) hybrid antiviral microfiltration membrane | |
| Mallakpour et al. | Emerging membrane technologies and disinfection methods for efficient removal of waterborne pathogens during the COVID-19 pandemic and post-pandemic | |
| KR101521991B1 (en) | Waterborne polyurethane/hydroxyapatite/textile sorbent for heavy metal ions and a method for manufacturing the same | |
| da Silva Biron et al. | Tubular ceramic membranes coated with ZnO and applied in the disinfection of water contaminated with Staphylococcus aureus | |
| Darzipour et al. | Antibacterial dynamic membranes loaded by cephalexin/amine-functionalized SBA_15 for Pb (II) ions removal | |
| CN106414346A (en) | BOP water filter cartridge | |
| Pais | Fabrication and characterization of electrospun cactus mucilage nanofibers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20180726 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |