CN108744729A - A kind of graphene modified activated carbon composite filter element and its preparation method and application - Google Patents
A kind of graphene modified activated carbon composite filter element and its preparation method and application Download PDFInfo
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- CN108744729A CN108744729A CN201810541228.XA CN201810541228A CN108744729A CN 108744729 A CN108744729 A CN 108744729A CN 201810541228 A CN201810541228 A CN 201810541228A CN 108744729 A CN108744729 A CN 108744729A
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- activated carbon
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- filter element
- composite filter
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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
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2055—Carbonaceous material
-
- 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
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- B01D2239/0442—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
- B01D2239/10—Filtering material manufacturing
-
- 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
Abstract
The present invention relates to a kind of graphene modified activated carbon composite filter element and its preparation method and application, the composite filter element includes each component of following mass percentage：Graphene 0.1%-10%；Modified activated carbon 90-99.9%.The preparation method of the composite filter element includes the following steps：A, modified activated carbon is immersed in graphene solution, filters out solid matter；B, it is dried to get the graphene modified activated carbon composite filter element after and then cleaning solid matter.Composite filter element prepared by the present invention has effects that high-efficiency antimicrobial, decolourizes, de-tastes, and can effectively remove bacterium, small organic molecule, heavy metal, chlorine residue and other radioactive substances in water, and fully adsorbs heterochromatic, the peculiar smell in water, keeps water quality sweetness palatable.And the composite filter element can effectively inhibit the growth for the bacterium for being adsorbed in cartridge surface, the problem of to effectively prevent secondary pollution.
Description
Technical field
The present invention relates to water purification catridge technical fields, specifically, being related to a kind of graphene modified activated carbon composite filter element
And its preparation method and application.
Background technology
Contain in usual tap water according to statistics containing harmful substances such as bacterium, heavy metal, gas with foreign flavor, pigments in tap water
There are about 2000 multiple compounds, wherein the main reason for more than 200 kinds harmful, and wherein bacterium is water pollution.Study table
It is bright：The pathogenic bacteria such as salmonella, staphylococcus aureus, Bacillus cereus and pathogenic escherichia coli in drinking water
Very serious influence can be generated on human health.Water purifier is a kind of ideal Household water purifying equipment, is used for tap water purifying,
Make to be contaminated and the tap water of not up to safe drinking water standard is after the processing of this water purifier, can be greatly improved.It can
Effectively remove iron rust, silt, chlorine residue, heterochromatic peculiar smell, organic matter, heavy metal ion and worm's ovum, red worm etc. more than 1 μm.It is existing
Have in technology, the pre-filtering device of water purifier, be usually provided with two-stage filter core, the first order is PP cotton filter element, and the second level is pressure
Contracting active carbon filter core, the two-stage filter core are set on water process access.PP filter cores adsorb suspended impurity, particle, dirt in water more
Mud etc., with the standard that micron (μm) is classification, it can be common that the pore size filters such as 1,5,10,20 μm pass through spy using melt-blown process
Different reception device so that melt-blown micro fibre forms centreless tubular article, by adjusting process combination, thus it is possible to vary fibre diameter
And density, to obtain the filter core product of various different strainabilities.Activated carbon is found to can be used to do from earlier 1900s
It is used for water process.It is the carbon of a tool cellular tissue, this some holes is exactly the surface area for increasing activated carbon adsorption impurity.
The physical property of carbonization material has great relationship with its raw material and the quality of processing procedure.Activated carbon is abutment surface cellular group
Knit adsorption of chemical species, organic contamination source, heterochromatic peculiar smell etc..In general, the activated carbon that volume is smaller, total body surface area meeting
Bigger, adsorption capacity also will be higher, but the crushing of its pipeline also can be higher.When originally water flow is larger, activated carbon filtering
The adsorption capacity of material is very limited, cannot effectively remove chlorine residue and heavy metal etc. in tap water.When activated carbon filter material
After the adsorption capacity of material reaches saturation, it is necessary to replace activated carbon filtration core, otherwise can not just play a role in filtering, and frequently replace
Activated carbon filtration core will make troubles to user, and increase use cost.Meanwhile PP cotton filter element and common activated carbon filter
Material cannot inhibit the growth of bacterium, the two-stage filter core to be changed without for a long time, can cause secondary pollution instead, bacterium is in several
What multiple increases.In order to achieve the purpose that antibacterial, existing processing method be by extruded activated carbon filter core be dipped into silver nitrate and
In dust technology mixed liquor, after dry, silver ion, that is, physical absorption is in extruded activated carbon filter core, to realize sterilization antibacterial work(
Can, however, the extruded activated carbon filter core is once set on water process access, silver and nitric acid can be precipitated, and silver is heavy metal,
Harmful, it is nitrite that nitric acid, which is precipitated, and being used for a long time can be carcinogenic.
Invention content
In view of the drawbacks of the prior art, the object of the present invention is to provide a kind of graphene modified activated carbon composite filter element and its
Preparation method and application.
The purpose of the present invention is what is be achieved through the following technical solutions：
The present invention provides a kind of graphene modified activated carbon composite filter elements, include each group of following mass percentage
Point：
Graphene 0.1%-10%；
Modified activated carbon 90-99.9%.
More preferable graphene mass percentage is 1-10%.
Preferably, the preparation method of the modified activated carbon is：
Activated carbon raw material is cleaned, after drying, is added in modifier solution, impregnates 2-3 hours, filter out after stirring evenly
Solid matter, up to modified activated carbon after cleaning, drying；
The mass ratio of the activated carbon and modifying agent is 20:1-1:2；The mass fraction of modifying agent in the modifier solution
For 1%-30%.
Preferably, the activated carbon raw material is in coaly activated carbon, cocoanut active charcoal, active fruit shell carbon, timber activated carbon
One or more.More preferably cocoanut active charcoal.
Preferably, the modifying agent is organosilicon, methyl methacrylate, acrylate, neopelex, fourth
One or more of diene and styrene.
Preferably, the modifying agent is neopelex modified activated carbon.
Preferably, the graphene is graphene oxide, graphene, anion-modified graphene, redox graphene
One or more of.More preferably graphene oxide, anion-modified graphene.
The present invention also provides a kind of preparation methods of graphene modified activated carbon composite filter element, which is characterized in that including
Following steps：
A, modified activated carbon is immersed in graphene solution, filters out solid matter；
B, it is dried to get the graphene modified activated carbon composite filter element after and then cleaning solid matter.Thus it prepares
In obtained composite filter element, the content of graphene is up to 0.05-2%.
Preferably, in step A, in the graphene solution, the quality containing graphene is 0.1-10%, more preferable 1-
10%；The soaking time is 6-10 hours.
Preferably, the drying temperature is 110-130 DEG C, drying time 20-28h.
The present invention use immersion-stoving process, the activated carbon being modified is immersed in graphene oxide, by depickling/
De-alkali reaction forms sulphur bridge key, enhances the connection of graphene oxide and activated carbon.
The present invention also provides a kind of application of graphene modified activated carbon composite filter element in purifier.
The modifying agent main function of the present invention is so that graphene is existed using chemical bonding reaction link graphene and activated carbon
It is uniformly distributed in activated carbon, while the connection between bonding reaction enhancing graphene and activated carbon.
The graphene main function is the anti-microbial property for enhancing activated carbon, can put forward the antibiotic property of active carbon filter core material
Energy.
Graphene, which is one kind, has carbon atom by two-dimensional material made of hexagonal array, table of the graphene oxide in graphene
Layer has carboxyl, and epoxy group, hydroxyl etc. can cut bacterial cell membrane containing base group modification, to destroy the thin of bacterium
After birth causes intracellular organic matter to outflow and kills bacterium.Graphene can be by the insertion to bacterial cell membrane, by thin simultaneously
Phospholipid molecule is extracted on after birth, to destroy cell membrane to kill bacterium.Further, since the electron transport property that graphene is excellent
Enable graphene to change the current potential of bacterium film surface easily, is inhaled to make to be adsorbed on a large amount of electronics in the bacterial body of film surface
It guides to graphene surface and the potential of bacterium film surface is made to lose stable state, film surface cellular respiration, electron-transport, signal is caused to pass
The functions such as defeated are chaotic, cause biochemical abnormal so that dead in bacterial body.
Compared with prior art, the present invention has following advantageous effect：
Composite filter element prepared by the present invention has effects that high-efficiency antimicrobial, decolourizes, de-tastes, and can effectively remove thin in water
Bacterium, small organic molecule, heavy metal, chlorine residue and other radioactive substances, and heterochromatic, peculiar smell in water are fully adsorbed, make water quality
It is sweet palatable.And the composite filter element can effectively inhibit the growth for the bacterium for being adsorbed in cartridge surface, it is secondary to effectively prevent
The problem of pollution.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
Embodiment 1
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, is included the following steps：
1. activated carbon modified：
1.1 weigh cocoanut active charcoal 100g in 1L beakers, with deionized water rinse, stand 6 hours, by upper layer impurity,
Ash content and clear liquid are outwelled, and 4-6 times repeatedly, activated carbon are cleaned, 10-14 hours dry at 110-130 DEG C.
1.2 configuration neopelex solution (5% (mass fraction)) are in 250mL small beakers, by activated carbon in 1
It is added in above-mentioned solution, is impregnated 2-3 hours after stirring evenly, filter out solid matter.
It is 20-28 hours dry at 110-130 DEG C after 1.3 solids filtered out are cleaned 3-5 times with deionized water, it prepares
It is grafted with the modified activated carbon of sodium group.
2. prepared by graphene activated carbon：
2.1 by graphene oxide ((5%) mass fraction) in 250mL small beakers, by modified activated carbon made from step 1
It is added in above-mentioned solution, is impregnated 6-10 hours after stirring evenly, filter out solid matter.
It is 20-28 hours dry at 110-130 DEG C after 2.2 solids filtered out are cleaned 3-5 times with deionized water, prepare graphite
Alkene modified active Carbon Materials.
In gained composite filter element, graphene content is 1%.
Embodiment 2
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, is included the following steps：
1. activated carbon modified：
1.1 weigh cocoanut active charcoal 100g in 1L beakers, with deionized water rinse, stand 6 hours, by upper layer impurity,
Ash content and clear liquid are outwelled, and 4-6 times repeatedly, activated carbon are cleaned, 10-14 hours dry at 110-130 DEG C.
1.2 configuration neopelex solution (1% (mass fraction)) are in 250mL small beakers, by activated carbon in 1
It is added in above-mentioned solution, is impregnated 2-3 hours after stirring evenly, filter out solid matter.
It is 20-28 hours dry at 110-130 DEG C after 1.3 solids filtered out are cleaned 3-5 times with deionized water, it prepares
It is grafted with the modified activated carbon of sodium group.
2. prepared by graphene activated carbon：
2.1 by graphene oxide (10%) mass fraction) in 250mL small beakers, by modified activated carbon made from step 1
It is added in above-mentioned solution, is impregnated 6-10 hours after stirring evenly, filter out solid matter.
It is 20-28 hours dry at 110-130 DEG C after 2.2 solids filtered out are cleaned 3-5 times with deionized water, prepare graphite
Alkene modified active Carbon Materials.
In gained composite filter element, graphene content is 2%.
Embodiment 3
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, is included the following steps：
1. activated carbon modified：
1.1 weigh cocoanut active charcoal 100g in 1L beakers, with deionized water rinse, stand 6 hours, by upper layer impurity,
Ash content and clear liquid are outwelled, and 4-6 times repeatedly, activated carbon are cleaned, 10-14 hours dry at 110-130 DEG C.
1.2 configuration neopelex solution (3% (mass fraction)) are in 250mL small beakers, by activated carbon in 1
It is added in above-mentioned solution, is impregnated 2-3 hours after stirring evenly, filter out solid matter.
It is 20-28 hours dry at 110-130 DEG C after 1.3 solids filtered out are cleaned 3-5 times with deionized water, it prepares
It is grafted with the modified activated carbon of sodium group.
2. prepared by graphene activated carbon：
2.1 by graphene oxide (0.1%) mass fraction) in 250mL small beakers, by modified active made from step 1
Charcoal is added in above-mentioned solution, is impregnated 6-10 hours after stirring evenly, is filtered out solid matter.
It is 20-28 hours dry at 110-130 DEG C after 2.2 solids filtered out are cleaned 3-5 times with deionized water, prepare graphite
Alkene modified active Carbon Materials.
In gained composite filter element, graphene content is 0.05%.
Embodiment 4
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, is included the following steps：
1. activated carbon modified：
1.1 weigh cocoanut active charcoal 100g in 1L beakers, with deionized water rinse, stand 6 hours, by upper layer impurity,
Ash content and clear liquid are outwelled, and 4-6 times repeatedly, activated carbon are cleaned, 12 hours dry at 120 DEG C.
1.2 configuration neopelex solution (2% (mass fraction)) are in 250mL small beakers, by activated carbon in 1
It is added in above-mentioned solution, is impregnated 2-3 hours after stirring evenly, filter out solid matter.
It is 24 hours dry at 120 DEG C after 1.3 solids filtered out are cleaned 3-5 times with deionized water, it prepares and is grafted with sulphur
The modified activated carbon of sour sodium group.
2. prepared by graphene activated carbon：
2.1 by graphene oxide (1% (mass fraction)) in 250mL small beakers, by modified activated carbon made from step 1
It is added in above-mentioned solution, is impregnated 6-10 hours after stirring evenly, filter out solid matter.
It is 24 hours dry at 120 DEG C after 2.2 solids filtered out are cleaned 3-5 times with deionized water, it prepares graphene and is modified work
Property Carbon Materials.
In gained composite filter element, graphene content is 0.5%.
Embodiment 5
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, with 4 basic phase of embodiment
Together, it the difference is that only：In step 2.1, the graphene used is anion-modified graphene.
In gained composite filter element, graphene content is 0.4%.
Embodiment 6
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, with 4 basic phase of embodiment
Together, it the difference is that only：In step 2.1, the graphene used is redox graphene.
In gained composite filter element, graphene content is 0.2%.
Embodiment 7
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, with 4 basic phase of embodiment
Together, it the difference is that only：In step 1.2, the modifying agent used is methyl methacrylate.
In gained composite filter element, graphene content is 0.25%.
Embodiment 8
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, with 4 basic phase of embodiment
Together, it the difference is that only：In step 1.2, the modifying agent used is organosilicon.
In gained composite filter element, graphene content is 0.3%.
Embodiment 9
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, with 4 basic phase of embodiment
Together, it the difference is that only：In step 1.1, the activated carbon used is wood activated charcoal.
In gained composite filter element, graphene content is 0.4%.
Embodiment 10
A kind of preparation method of graphene modified activated carbon composite filter element is present embodiments provided, with 4 basic phase of embodiment
Together, it the difference is that only：In step 1.1, the activated carbon used is coaly activated carbon.
In gained composite filter element, graphene content is 0.4%.
Comparative example 1
This comparative example provides a kind of preparation method of graphene modified activated carbon composite filter element, specific steps and embodiment
1 is essentially identical, the difference is that only：In this comparative example, activated carbon is not modified, it is directly that activated carbon is molten in graphene
It is impregnated in liquid.
In gained composite filter element, graphene content is 0.1%.
Compliance test result：
Graphene modified activated carbon composite filter element made from above example and comparative example is filtered tap water, mistake
The results are shown in Table 1 for filter.
Table 1
There are many concrete application approach of the present invention, the above is only a preferred embodiment of the present invention.More than it should be pointed out that
Embodiment is merely to illustrate the present invention, and the protection domain being not intended to restrict the invention.For the common skill of the art
For art personnel, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as this hair
Bright protection domain.
Claims (10)
1. a kind of graphene modified activated carbon composite filter element, which is characterized in that include each component of following mass percentage：
Graphene 0.1%-10%；
Modified activated carbon 90-99.9%.
2. graphene modified activated carbon composite filter element according to claim 1, which is characterized in that the modified activated carbon
Preparation method is：
Activated carbon raw material is cleaned, after drying, is added in modifier solution, is impregnated 2-3 hours after stirring evenly, filter out solid
Substance, up to modified activated carbon after cleaning, drying；
The mass ratio of the activated carbon and modifying agent is 20:1-1:2；The mass fraction of modifying agent is in the modifier solution
1%-30%.
3. graphene modified activated carbon composite filter element according to claim 1, which is characterized in that the activated carbon raw material is
One or more of coaly activated carbon, cocoanut active charcoal, active fruit shell carbon, timber activated carbon.
4. graphene modified activated carbon composite filter element according to claim 1, which is characterized in that the modifying agent is, has
One or more of machine silicon, acrylate, methyl methacrylate, neopelex, butadiene and styrene.
5. graphene modified activated carbon composite filter element according to claim 2 or 4, which is characterized in that the modifying agent is
Neopelex modified activated carbon.
6. graphene modified activated carbon composite filter element according to claim 1, which is characterized in that the graphene is oxidation
One or more of graphene, graphene, anion-modified graphene, redox graphene.
7. a kind of preparation method according to claim 1-6 any one of them graphene modified activated carbon composite filter elements, special
Sign is, includes the following steps：
A, modified activated carbon is immersed in graphene solution, filters out solid matter；
B, it is dried to get the graphene modified activated carbon composite filter element after and then cleaning solid matter.
8. the preparation method of graphene modified activated carbon composite filter element according to claim 6, which is characterized in that step A
In, in the graphene solution, the quality containing graphene is 0.1-10%；The soaking time is 6-10 hours.
9. the preparation method of graphene modified activated carbon composite filter element according to claim 6, which is characterized in that step B
In, the drying temperature is 110-130 DEG C, drying time 20-28h.
10. a kind of application of graphene modified activated carbon composite filter element according to claim 1 in purifier.
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| CN109701492A (en) * | 2019-02-22 | 2019-05-03 | 常州兴烯石墨烯科技有限公司 | A kind of functionality graphene composite activated carbon and preparation method thereof |
| CN109718739A (en) * | 2019-01-16 | 2019-05-07 | 上海利物盛纳米科技有限公司 | Antibacterial type graphene modified carbon leaching material and preparation method thereof for Water warfare |
| CN110171881A (en) * | 2019-05-31 | 2019-08-27 | 广州康滤净化科技有限公司 | A kind of air-flow method prepares graphene grafting active carbon purifying filter core and preparation method thereof |
| CN110813234A (en) * | 2019-11-12 | 2020-02-21 | 南昌师范学院 | Preparation method of antibacterial modified wheat straw biochar with amphiphilic characteristic |
| CN110860272A (en) * | 2019-11-04 | 2020-03-06 | 南通强生石墨烯科技有限公司 | Graphene antibacterial carbon sphere and preparation method and application thereof |
| CN113666901A (en) * | 2021-09-08 | 2021-11-19 | 山东海科创新研究院有限公司 | Vinylene carbonate and purification method thereof |
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| CN109718739A (en) * | 2019-01-16 | 2019-05-07 | 上海利物盛纳米科技有限公司 | Antibacterial type graphene modified carbon leaching material and preparation method thereof for Water warfare |
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| CN110171881A (en) * | 2019-05-31 | 2019-08-27 | 广州康滤净化科技有限公司 | A kind of air-flow method prepares graphene grafting active carbon purifying filter core and preparation method thereof |
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| CN110813234A (en) * | 2019-11-12 | 2020-02-21 | 南昌师范学院 | Preparation method of antibacterial modified wheat straw biochar with amphiphilic characteristic |
| CN113666901A (en) * | 2021-09-08 | 2021-11-19 | 山东海科创新研究院有限公司 | Vinylene carbonate and purification method thereof |
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