CN112573610A - Landscape water treatment purification material and preparation method thereof - Google Patents
Landscape water treatment purification material and preparation method thereof Download PDFInfo
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- CN112573610A CN112573610A CN202011189902.6A CN202011189902A CN112573610A CN 112573610 A CN112573610 A CN 112573610A CN 202011189902 A CN202011189902 A CN 202011189902A CN 112573610 A CN112573610 A CN 112573610A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 239000000463 material Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000000746 purification Methods 0.000 title claims abstract description 16
- 239000000243 solution Substances 0.000 claims abstract description 132
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 49
- 239000002135 nanosheet Substances 0.000 claims abstract description 48
- 229920002635 polyurethane Polymers 0.000 claims abstract description 35
- 239000004814 polyurethane Substances 0.000 claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 34
- 229920001432 poly(L-lactide) Polymers 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 22
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 19
- 239000003929 acidic solution Substances 0.000 claims abstract description 17
- 230000001590 oxidative effect Effects 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 238000005266 casting Methods 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 11
- 238000001291 vacuum drying Methods 0.000 claims abstract description 11
- 238000005406 washing Methods 0.000 claims abstract description 11
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 claims abstract description 10
- 238000001354 calcination Methods 0.000 claims abstract description 10
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000011261 inert gas Substances 0.000 claims abstract description 10
- 238000005502 peroxidation Methods 0.000 claims abstract description 10
- 239000002243 precursor Substances 0.000 claims abstract description 10
- 238000002791 soaking Methods 0.000 claims abstract description 9
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 6
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims abstract description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 20
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 229960000583 acetic acid Drugs 0.000 claims description 10
- QKIUAMUSENSFQQ-UHFFFAOYSA-N dimethylazanide Chemical compound C[N-]C QKIUAMUSENSFQQ-UHFFFAOYSA-N 0.000 claims description 10
- 239000012362 glacial acetic acid Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 9
- 229910017604 nitric acid Inorganic materials 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 7
- 239000001508 potassium citrate Substances 0.000 claims description 6
- 229960002635 potassium citrate Drugs 0.000 claims description 6
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical group [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 6
- 235000011082 potassium citrates Nutrition 0.000 claims description 6
- 239000001509 sodium citrate Substances 0.000 claims description 5
- 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 description 5
- 238000004519 manufacturing process Methods 0.000 claims 6
- 230000000694 effects Effects 0.000 abstract description 11
- 229920006267 polyester film Polymers 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 239000012528 membrane Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- 241000195493 Cryptophyta Species 0.000 description 7
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000004155 Chlorine dioxide Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 235000019398 chlorine dioxide Nutrition 0.000 description 3
- 229910000365 copper sulfate Inorganic materials 0.000 description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000010170 biological method Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003124 biologic agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920006237 degradable polymer Polymers 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000002311 subsequent effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000036561 sun exposure Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
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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
- C02F1/28—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
-
- 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
- B01J20/02—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
- B01J20/205—Carbon nanostructures, e.g. nanotubes, nanohorns, nanocones, nanoballs
-
- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
-
- 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
- B01J20/3071—Washing or leaching
-
- 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
Abstract
The invention discloses a preparation method of a landscape water treatment purification material, which comprises the following steps: (1) dispersing the aluminum hydroxide into an ethanol water solution, and uniformly stirring to obtain an aluminum hydroxide solution; heating a carbon material precursor to 1000-1200 ℃ at a heating rate of 1-3 ℃/min under the protection of inert gas, calcining for 1-3 h, then preserving heat for 30min, cooling to room temperature to obtain carbon nanosheets, then adding the carbon material precursor into an oxidizing acidic solution, and performing peroxidation to obtain porous carbon nanosheets; (2) soaking a porous carbon nanosheet into a hydroxy aluminum oxide solution, performing ultrasonic treatment for 20-30 min, then sequentially adding a polyurethane solution and a poly L-lactic acid solution, and continuing ultrasonic treatment for 30-60 min to obtain a blending solution; (3) and placing the blending solution in an environment with a vacuum degree of 0.05-0.1 MPa for 3-5 h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film with deionized water for 2-3 times, and then placing the film in a vacuum drying oven at a dry temperature of 20-30 ℃ for drying for 18-24 h to obtain the modified polyester film. The material has good toughness and good treatment effect on landscape water.
Description
Technical Field
The invention belongs to the technical field of landscape water treatment, and particularly relates to a landscape water treatment purification material and a preparation method thereof.
Background
Landscape water generally refers to a body of water used for visual appreciation and is generally divided into two categories: one is a natural waterscape like a natural lake, river, etc.; the other is artificial waterscape like fountain, artificial lake, small city river, etc. Along with the improvement of living standard, the requirements of people on living environment are higher and higher, and the urban water landscape is used as a component of the living environment, so that the ornamental value is increased, the water vapor circulation can be increased, and the microclimate adjusting effect is achieved. However, the landscape water pollution is increasingly prominent, and the deterioration of landscape water quality and water eutrophication can cause adverse effects on the surrounding environment.
Most of urban artificial water landscapes are closed systems, the self-purification capacity of water bodies is poor, designers often only consider the ornamental value of the urban artificial water landscapes when designing the water landscapes, and measures are not taken for maintaining the water quality, so that the water quality is deteriorated. The modern artificial water landscape has ornamental value and forms a micro-ecological system, namely the micro-ecological system of the artificial water landscape.
Landscape water generally comprises ponds, artificial lakes, small river channels flowing through cities and the like, and the landscape water treatment needs to be carried out according to local conditions and comprehensive treatment, and common methods comprise physical methods, biological methods and ecological methods. Assuming no sewage is discharged, landscape water is mainly subjected to the following main pollution factors: 1. organic matters and nitrogen and phosphorus elements in the surface and soil caused by rainwater surface runoff (the pollution degree of the rainwater on the surface is equivalent to that of domestic sewage); 2. foreign organic matters and nitrogen and phosphorus elements brought by atmospheric dust fall; 3. organic matters accumulated by dead biological communities derived from the lake and the like continuously; 4. the sun exposure in high temperature in summer causes a great amount of blue algae outbreak.
Current methods commonly used for treating landscape water include: physical, biological and chemical methods. The physical method comprises water diversion and water changing, aeration and oxygenation, ultraviolet ray algae removal, sterilization, precipitation and filtration/dirt interception and the like. Although the polluted water body can be replaced by water diversion and water replacement, the water quality is kept clear, the method is high in cost, and the pollution problem is not solved fundamentally. Aeration and aeration can improve the oxygen content of the water body and prevent and treat black and odorous water body, but the operation cost is high. The ultraviolet irradiation has short contact time and high speed, and does not need chemical medicine prick, but the ultraviolet irradiation has no subsequent effect and has high requirement on turbidity. The precipitation filtration/sewage interception method can intercept suspended matters and colloid impurities of smaller particles in water, but the filter can have the phenomena of blockage and cutoff in different degrees after being used for a period of time, so that the treatment effect is gradually reduced.
The chemical method comprises adding copper sulfate, chlorine dioxide, adding chemical air floatation method and coagulating sedimentation method. The addition of copper sulfate and chlorine dioxide has obvious killing effect on algae, bacteria and plankton, but the addition of the copper sulfate and the chlorine dioxide can cause secondary pollution, the algae can generate drug resistance, and the microbial variation and the like are caused. The chemical-adding air floatation method can effectively remove pollutants such as fine suspended particles, algae, solid impurities, phosphate and the like in water, so that the dissolved oxygen in the water is increased, but secondary pollution is caused, and the process flow is complex. The coagulating sedimentation can effectively remove suspended matters and algae in water, is simple and convenient to operate, and has long retention time and slow effect.
The biological method comprises biological contact oxidation, an aeration biological filter, biological agent addition and an aquatic animal and plant system. The biological contact oxidation and aeration biological filter has the advantages of high efficiency, energy conservation, strong impact load resistance and small occupied area, but has the defects of easy sludge expansion and difficult sludge treatment. The water quality can be purified to a certain degree by adding a proper amount of microorganisms, but the decomposition of the microorganisms can cause mass propagation of algae, and the water quality is deteriorated again; the operation cost is high. A set of integrally balanced aquatic animal and plant system is established in the landscape water body, the self-purification capacity of the water body can be improved, but the balance of the whole system is poor, and the change of the surrounding environment can destroy the balance, so that the water quality is deteriorated.
Porous carbon nanosheet materials are more applied to the fields of adsorption, catalysis and the like. The graphene-like two-dimensional material is a graphene-like two-dimensional material, has a high aspect ratio and a rigid interface, is provided with a microporous structure with an adjustable pore size on the surface, and has excellent thermodynamic and chemical stability. These properties make it potentially useful as a water treatment material.
Although various methods are currently used in landscape water treatment, each method has its own disadvantages. The inventor of the application prepares a membrane material based on the property of porous carbon nano and combined with a degradable material, and the membrane material is used for landscape water treatment and has an obvious effect.
Disclosure of Invention
The invention mainly aims to solve the problem that the existing landscape water treatment method is poor in effect, and provides a landscape water treatment and purification material and a preparation method thereof. The purifying material can effectively remove pollutants in landscape water, and has good degradation performance and no pollution to the environment.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme.
The invention provides a preparation method of a landscape water treatment purification material, which comprises the following steps:
(1) dispersing the aluminum hydroxide into an ethanol water solution, and uniformly stirring to obtain an aluminum hydroxide solution;
heating a carbon material precursor to 1000-1200 ℃ at a heating rate of 1-3 ℃/min under the protection of inert gas, calcining for 1-3 h, keeping the temperature for 30min, cooling to room temperature to obtain carbon nanosheets, adding the carbon nanosheets into an oxidizing acidic solution, and performing a peroxidation reaction to obtain porous carbon nanosheets;
(2) soaking a porous carbon nanosheet into the hydroxy aluminum oxide solution, performing ultrasonic treatment for 20-30 min, then sequentially adding a polyurethane solution and a poly L-lactic acid solution, and continuing ultrasonic treatment for 30-60 min to obtain a blending solution;
(3) and (3) placing the prepared blending solution in an environment with a vacuum degree of 0.05-0.1 MPa for 3-5 h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film for 2-3 times by using deionized water, and then placing the film in a vacuum drying oven at a temperature of 20-30 ℃ for drying for 18-24 h to obtain the landscape water treatment material, wherein the material is a film material.
In the preparation method, the aluminum oxyhydroxide and the ethanol are mixed in a mass ratio of 1: (100-150) in an amount of.
In the preparation method, the carbon material precursor is potassium citrate or sodium citrate.
In the preparation method, the oxidizing acidic solution is a mixture of (0.1-0.5): (0.5-1): (0.1-0.5) a mixture of sulfuric acid, nitric acid and hydrogen peroxide.
In the preparation method, the carbon material precursor and the oxidizing acidic solution are added in a ratio of 40 to 80mL of the oxidizing acidic solution to 1g of the carbon material precursor.
In the preparation method, the porous carbon nanosheet and the hydroxy alumina solution are added according to the proportion of 1g of porous carbon nanosheet to 50-100 mL of hydroxy alumina solution.
The preparation method described above, wherein the polyurethane solution is prepared according to the following steps: dissolving 1-5 g of polyurethane in 10-20 mL of N, N-dimethyl amide solvent, heating in a water bath, and refluxing for 20min to obtain the polyurethane.
The preparation method described above, wherein the poly L-lactic acid solution is prepared according to the following steps: dissolving 1-5 g of poly L-lactic acid in 20-40 mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
In the preparation method, the volume ratio of the polyurethane solution to the poly L-lactic acid solution is (1-5): 1 is added.
By the technical scheme, the invention at least has the following advantages: the method takes the aluminum oxyhydroxide as a main adsorption substance, combines the aluminum oxyhydroxide with the porous carbon nanosheet through the ultrasonic action, and then polymerizes with the degradable polymer to form the film-shaped material, wherein the material has good toughness and degradability. According to the invention, the hydroxy alumina and the porous carbon nanosheet have adsorption performance, the hydroxy alumina is loaded on the porous carbon nanosheet, and the porous carbon nanosheet has the characteristics of porosity and large surface area, so that more hydroxy alumina can be loaded, and the two substances are combined to have a synergistic effect, so that the overall adsorption performance can be enhanced. The purifying material of the present invention exists in a membrane state, so that the purifying material is convenient to use, and the used membrane material is degradable and has no pollution to the environment after being used.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Preparing a polyurethane solution: dissolving 3g of polyurethane in 15mL of N, N-dimethyl amide solvent, heating in a water bath, and refluxing for 20 min.
Preparing a poly L-lactic acid solution: dissolving 3g of poly L-lactic acid in 25mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
10g of aluminum oxyhydroxide was dispersed in 1200mL of an ethanol solution (50% concentration), and the solution was stirred uniformly to obtain an aluminum oxyhydroxide solution. Heating potassium citrate to 1200 ℃ at a heating rate of 2 ℃/min under the protection of inert gas, calcining for 2h, then preserving heat for 30min, and cooling to room temperature to obtain the carbon nanosheet. Then 10g of carbon nanosheet is added into 600mL of oxidizing acidic solution (a mixture of sulfuric acid, nitric acid and hydrogen peroxide in a volume ratio of 0.3: 0.8: 0.2) to be subjected to a peroxidation reaction to obtain the porous carbon nanosheet. Soaking 5g of porous carbon nanosheet in the 400mL of hydroxy aluminum oxide solution, performing ultrasonic treatment for 25min, then sequentially adding 300mL of polyurethane solution and 100mL of poly L-lactic acid solution, and continuing ultrasonic treatment for 45min to obtain a blending solution. And placing the prepared blending solution in an environment with the vacuum degree of 0.08MPa for 4h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film with deionized water for 2-3 times, and then placing the film in a vacuum drying oven at the temperature of 25 ℃ for drying for 20h to obtain the landscape water treatment material which is a film material. The film thickness was measured to be 0.04mm, and the properties were measured according to GB/T1040.3, with the performance parameters shown in Table 1.
Example 2
Preparing a polyurethane solution: 4g of polyurethane is dissolved in 15mL of N, N-dimethyl amide solvent, heated in a water bath and refluxed for 20 min.
Preparing a poly L-lactic acid solution: dissolving 3g of poly L-lactic acid in 20mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
10g of aluminum oxyhydroxide was dispersed in 1000mL of an ethanol solution (concentration: 50%), and the solution was stirred uniformly to obtain an aluminum oxyhydroxide solution. And heating sodium citrate to 1000 ℃ at a heating rate of 3 ℃/min under the protection of inert gas, calcining for 3h, then preserving heat for 30min, and cooling to room temperature to obtain the carbon nanosheet. Then, 10g of carbon nanosheet is added into 600mL of oxidizing acidic solution (a mixture of sulfuric acid, nitric acid and hydrogen peroxide in a volume ratio of 0.5: 0.5: 0.5) to be subjected to a peroxidation reaction to obtain the porous carbon nanosheet. Soaking 5g of porous carbon nanosheet into the 500mL of hydroxy aluminum oxide solution, performing ultrasonic treatment for 20min, then sequentially adding 500mL of polyurethane solution and 100mL of poly L-lactic acid solution, and continuing ultrasonic treatment for 30min to obtain a blending solution. And placing the prepared blending solution in an environment with the vacuum degree of 0.08MPa for 4h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film with deionized water for 2-3 times, and then placing the film in a vacuum drying oven at the temperature of 20 ℃ for drying for 24h to obtain the landscape water treatment material, wherein the landscape water treatment material is a film material. The film thickness was measured to be 0.04mm, and the properties were measured according to GB/T1040.3, with the performance parameters shown in Table 1.
Example 3
Preparing a polyurethane solution: 1g of polyurethane is dissolved in 10mL of N, N-dimethyl amide solvent, heated in a water bath and refluxed for 20 min.
Preparing a poly L-lactic acid solution: dissolving 5g of poly L-lactic acid in 20mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
10g of aluminum oxyhydroxide was dispersed in 1200mL of an ethanol solution (concentration: 75%), and the solution was stirred uniformly to obtain an aluminum oxyhydroxide solution. Heating potassium citrate to 1200 ℃ at a heating rate of 3 ℃/min under the protection of inert gas, calcining for 1h, then preserving heat for 30min, and cooling to room temperature to obtain the carbon nanosheet. Then 10g of carbon nanosheet is added into 800mL of oxidizing acidic solution (a mixture of sulfuric acid, nitric acid and hydrogen peroxide in a volume ratio of 0.5: 1: 0.5) to be subjected to peroxidation reaction to obtain the porous carbon nanosheet. Soaking 5g of porous carbon nano sheet into the 250mL of hydroxy aluminum oxide solution, performing ultrasonic treatment for 30min, then sequentially adding 100mL of polyurethane solution and 100mL of poly L-lactic acid solution, and continuing ultrasonic treatment for 30min to obtain a blending solution. And placing the prepared blending solution in an environment with the vacuum degree of 0.05MPa for 5h, then casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film with deionized water for 2-3 times, and then placing the film in a vacuum drying oven at the temperature of 30 ℃ for drying for 18h to obtain the landscape water treatment material which is a film material. The film thickness was measured to be 0.04mm, and the properties were measured according to GB/T1040.3, with the performance parameters shown in Table 1.
Example 4
Preparing a polyurethane solution: dissolving 3g of polyurethane in 15mL of N, N-dimethyl amide solvent, heating in a water bath, and refluxing for 20 min.
Preparing a poly L-lactic acid solution: dissolving 3g of poly L-lactic acid in 40mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
10g of aluminum oxyhydroxide was dispersed in 1500mL of an ethanol solution (concentration: 45%), and the solution was stirred uniformly to obtain an aluminum oxyhydroxide solution. And heating sodium citrate to 1200 ℃ at a heating rate of 3 ℃/min under the protection of inert gas, calcining for 1h, then preserving heat for 30min, and cooling to room temperature to obtain the carbon nanosheet. Then, 10g of carbon nanosheet is added into 400mL of oxidizing acidic solution (a mixture of sulfuric acid, nitric acid and hydrogen peroxide in a volume ratio of 0.5: 1: 0.5) to be subjected to peroxidation reaction to obtain the porous carbon nanosheet. Soaking 5g of porous carbon nanosheet in 350mL of the hydroxy aluminum oxide solution, performing ultrasonic treatment for 25min, then sequentially adding 300mL of polyurethane solution and 100mL of poly L-lactic acid solution, and continuing ultrasonic treatment for 45min to obtain a blending solution. And placing the prepared blending solution in an environment with the vacuum degree of 0.1MPa for 3h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film with deionized water for 2-3 times, and then placing the film in a vacuum drying oven at the temperature of 20 ℃ for drying for 24h to obtain the landscape water treatment material which is a film material. The film thickness was measured to be 0.04mm, and the properties were measured according to GB/T1040.3, with the performance parameters shown in Table 1.
Example 5
Preparing a polyurethane solution: 5g of polyurethane is dissolved in 20mL of N, N-dimethyl amide solvent, heated in a water bath and refluxed for 20 min.
Preparing a poly L-lactic acid solution: dissolving 1g of poly L-lactic acid in 20mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
10g of aluminum oxyhydroxide was dispersed in 1500mL of an ethanol solution (50% concentration), and the solution was stirred uniformly to obtain an aluminum oxyhydroxide solution. Heating potassium citrate to 1200 ℃ at a heating rate of 3 ℃/min under the protection of inert gas, calcining for 1h, then preserving heat for 30min, and cooling to room temperature to obtain the carbon nanosheet. Then, 10g of carbon nanosheet is added into 700mL of oxidizing acidic solution (a mixture of sulfuric acid, nitric acid and hydrogen peroxide in a volume ratio of 0.1: 0.5: 0.5) to be subjected to a peroxidation reaction to obtain the porous carbon nanosheet. Soaking 5g of porous carbon nanosheet into 450mL of the hydroxy aluminum oxide solution, performing ultrasonic treatment for 25min, then sequentially adding 400mL of polyurethane solution and 100mL of poly L-lactic acid solution, and continuing ultrasonic treatment for 45min to obtain a blending solution. And placing the prepared blending solution in an environment with the vacuum degree of 0.1MPa for 3h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film with deionized water for 2-3 times, and then placing the film in a vacuum drying oven at the temperature of 30 ℃ for drying for 24h to obtain the landscape water treatment material, wherein the landscape water treatment material is a film material. The film thickness was measured to be 0.04mm, and the properties were measured according to GB/T1040.3, with the performance parameters shown in Table 1.
Example 6
Preparing a polyurethane solution: dissolving 3g of polyurethane in 20mL of N, N-dimethyl amide solvent, heating in a water bath, and refluxing for 20 min.
Preparing a poly L-lactic acid solution: dissolving 3g of poly L-lactic acid in 30mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
10g of aluminum oxyhydroxide was dispersed in 1200mL of an ethanol solution (concentration: 60%), and the solution was stirred uniformly to obtain an aluminum oxyhydroxide solution. And heating sodium citrate to 1100 ℃ at a heating rate of 3 ℃/min under the protection of inert gas, calcining for 2h, then preserving heat for 30min, and cooling to room temperature to obtain the carbon nanosheet. Then, 10g of carbon nanosheet is added into 700mL of oxidizing acidic solution (a mixture of sulfuric acid, nitric acid and hydrogen peroxide in a volume ratio of 0.1: 0.5: 0.3) to be subjected to a peroxidation reaction to obtain the porous carbon nanosheet. Soaking 5g of porous carbon nanosheet into the 500mL of hydroxy aluminum oxide solution, performing ultrasonic treatment for 25min, then sequentially adding 500mL of polyurethane solution and 100mL of poly L-lactic acid solution, and continuing ultrasonic treatment for 60min to obtain a blending solution. And placing the prepared blending solution in an environment with the vacuum degree of 0.1MPa for 3h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film with deionized water for 2-3 times, and then placing the film in a vacuum drying oven at the temperature of 30 ℃ for drying for 20h to obtain the landscape water treatment material which is a film material. The film thickness was measured to be 0.04mm, and the properties were measured according to GB/T1040.3, with the performance parameters shown in Table 1.
Comparative example 1
Preparing a polyurethane solution: dissolving 3g of polyurethane in 15mL of N, N-dimethyl amide solvent, heating in a water bath, and refluxing for 20 min.
Preparing a poly L-lactic acid solution: dissolving 3g of poly L-lactic acid in 25mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
Heating potassium citrate to 1200 ℃ at a heating rate of 2 ℃/min under the protection of inert gas, calcining for 2h, then preserving heat for 30min, and cooling to room temperature to obtain the carbon nanosheet. Then 10g of carbon nanosheet is added into 600mL of oxidizing acidic solution (a mixture of sulfuric acid, nitric acid and hydrogen peroxide in a volume ratio of 0.3: 0.8: 0.2) to be subjected to a peroxidation reaction to obtain the porous carbon nanosheet. 5g of porous carbon nanosheet, 300mL of polyurethane solution and 100mL of poly L-lactic acid solution are mixed and ultrasonically treated for 45min to obtain a blending solution. And placing the prepared blending solution in an environment with the vacuum degree of 0.08MPa for 4h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film with deionized water for 2-3 times, and then placing the film in a vacuum drying oven at the temperature of 25 ℃ for drying for 20h to obtain the landscape water treatment material which is a film material. The film thickness was measured to be 0.04mm, and the properties were measured according to GB/T1040.3, with the performance parameters shown in Table 1.
Comparative example 2
Preparing a polyurethane solution: dissolving 3g of polyurethane in 15mL of N, N-dimethyl amide solvent, heating in a water bath, and refluxing for 20 min.
Preparing a poly L-lactic acid solution: dissolving 3g of poly L-lactic acid in 25mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
10g of aluminum oxyhydroxide was dispersed in 1200mL of an ethanol solution (50% concentration), and the solution was stirred uniformly to obtain an aluminum oxyhydroxide solution. And sequentially adding 300mL of polyurethane solution and 100mL of poly L-lactic acid solution into 400mL of the hydroxy aluminum oxide solution, and continuing performing ultrasonic treatment for 30-60 min to obtain a blending solution. And placing the prepared blending solution in an environment with the vacuum degree of 0.08MPa for 4h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film with deionized water for 2-3 times, and then placing the film in a vacuum drying oven at the temperature of 25 ℃ for drying for 20h to obtain the landscape water treatment material which is a film material. The film thickness was measured to be 0.04mm, and the properties were measured according to GB/T1040.3, with the performance parameters shown in Table 1.
TABLE 1 summary of the performance tests of the purification membrane materials of examples 1-6 and comparative examples 1-2
As can be seen from the results in Table 1, the film material of the present invention has excellent tensile strength, elongation at break and tear strength, which are greatly improved as compared with comparative examples 1 and 2.
Test example 1 Sewage treatment Effect test of purifying Material
The purification membrane material for landscape water prepared by the invention is applied to landscape water treatment in a certain community, and the SS concentration and the COD (chemical oxygen demand) in water are measured to be 76mg/L and 120mg/L before treatment.
The processing steps are as follows: according to the shape of the landscape water, the purification membrane material for the landscape water is cut into a corresponding shape and then is paved on the landscape water. The purification membrane material can degrade organic matters in landscape water, is taken out of the water after being treated for 1-2 hours, and measures SS and COD indexes of the landscape water, and the results are shown in table 2. The used purification membrane material can be recycled after being aired, and the service life is generally 5 times.
TABLE 2 summary of the landscape Water treatment effects of the purification Membrane materials of examples 1-6 and comparative examples 1-2
As can be seen from the results in Table 2, the purification material of the present invention can effectively remove SS and COD in landscape water with obvious effect.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A preparation method of landscape water treatment and purification material comprises the following steps:
(1) dispersing the aluminum hydroxide into an ethanol water solution, and uniformly stirring to obtain an aluminum hydroxide solution;
heating a carbon material precursor to 1000-1200 ℃ at a heating rate of 1-3 ℃/min under the protection of inert gas, calcining for 1-3 h, keeping the temperature for 30min, cooling to room temperature to obtain carbon nanosheets, adding the carbon nanosheets into an oxidizing acidic solution, and performing a peroxidation reaction to obtain porous carbon nanosheets;
(2) soaking a porous carbon nanosheet into the hydroxy aluminum oxide solution, performing ultrasonic treatment for 20-30 min, then sequentially adding a polyurethane solution and a poly L-lactic acid solution, and continuing ultrasonic treatment for 30-60 min to obtain a blending solution;
(3) and (3) placing the prepared blending solution in an environment with a vacuum degree of 0.05-0.1 MPa for 3-5 h, casting the blending solution on a stainless steel mold, drying to obtain a film, washing the obtained film for 2-3 times by using deionized water, and then placing the film in a vacuum drying oven at a temperature of 20-30 ℃ for drying for 18-24 h to obtain the landscape water treatment material, wherein the material is a film material.
2. The production method according to claim 1, wherein the aluminum oxyhydroxide and the ethanol are mixed in a mass ratio of 1: (100-150) in an amount of.
3. The production method according to claim 1, wherein the carbon material precursor is potassium citrate or sodium citrate.
4. The production method according to claim 1, wherein the oxidizing acidic solution is a solution obtained by mixing, by volume, an oxidizing acidic solution of (0.1 to 0.5): (0.5-1): (0.1-0.5) a mixture of sulfuric acid, nitric acid and hydrogen peroxide.
5. The production method according to claim 1, wherein the carbon material precursor and the oxidizing acidic solution are added in a ratio of 40 to 80mL of the oxidizing acidic solution to 1g of the carbon material precursor.
6. The preparation method according to claim 1, wherein the porous carbon nanosheet and the aluminum oxyhydroxide solution are added in a ratio of 50-100 mL of the aluminum oxyhydroxide solution per 1g of porous carbon nanosheet.
7. The production method according to claim 1, wherein the polyurethane solution is formulated according to the following steps: dissolving 1-5 g of polyurethane in 10-20 mL of N, N-dimethyl amide solvent, heating in a water bath, and refluxing for 20min to obtain the polyurethane.
8. The production method according to claim 1, wherein the poly L-lactic acid solution is formulated according to the following steps: dissolving 1-5 g of poly L-lactic acid in 20-40 mL of glacial acetic acid, and magnetically stirring until the solution is uniform.
9. The preparation method according to claim 1, wherein the volume ratio of the polyurethane solution to the poly L-lactic acid solution is (1-5): 1 is added.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107488268A (en) * | 2017-09-15 | 2017-12-19 | 重庆石墨烯研究院有限公司 | Polyurethane porous film of graphene-containing and its production and use |
| CN107715698A (en) * | 2017-11-09 | 2018-02-23 | 济南大学 | A kind of preparation method of purification membrane material for landscape water and products obtained therefrom and application |
| CN107876002A (en) * | 2017-11-09 | 2018-04-06 | 济南大学 | A kind of preparation method of landscape water sorbing material and products obtained therefrom and application |
| US20180170003A1 (en) * | 2015-06-18 | 2018-06-21 | Imperial Innovations Limited | 2-dimensional carbon material |
| CN109360740A (en) * | 2018-12-17 | 2019-02-19 | 华进半导体封装先导技术研发中心有限公司 | Porous carbon nanosheet of a kind of two dimension N doping and preparation method thereof |
| CN110385048A (en) * | 2019-06-24 | 2019-10-29 | 大连理工大学 | A kind of porous carbon nanosheet mixed substrate membrane containing nano-grade molecular sieve of two dimension and preparation method thereof |
-
2020
- 2020-10-30 CN CN202011189902.6A patent/CN112573610A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180170003A1 (en) * | 2015-06-18 | 2018-06-21 | Imperial Innovations Limited | 2-dimensional carbon material |
| CN107488268A (en) * | 2017-09-15 | 2017-12-19 | 重庆石墨烯研究院有限公司 | Polyurethane porous film of graphene-containing and its production and use |
| CN107715698A (en) * | 2017-11-09 | 2018-02-23 | 济南大学 | A kind of preparation method of purification membrane material for landscape water and products obtained therefrom and application |
| CN107876002A (en) * | 2017-11-09 | 2018-04-06 | 济南大学 | A kind of preparation method of landscape water sorbing material and products obtained therefrom and application |
| CN109360740A (en) * | 2018-12-17 | 2019-02-19 | 华进半导体封装先导技术研发中心有限公司 | Porous carbon nanosheet of a kind of two dimension N doping and preparation method thereof |
| CN110385048A (en) * | 2019-06-24 | 2019-10-29 | 大连理工大学 | A kind of porous carbon nanosheet mixed substrate membrane containing nano-grade molecular sieve of two dimension and preparation method thereof |
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