CN104190111B - A kind of have oil-water separation mesh film of lead ion response and preparation method thereof - Google Patents
A kind of have oil-water separation mesh film of lead ion response and preparation method thereof Download PDFInfo
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Abstract
The invention discloses and a kind of there is oil-water separation mesh film of lead ion response and preparation method thereof.The cushioning liquid that the method comprises the steps: (1) is 8.0 ~ 12.0 by Dopamine hydrochloride and pH value is mixed to get mixed solution; (2) nethike embrane be impregnated in described mixed solution; (3) mercaptan compound and alkaline medium are dissolved in the water obtain suspension, and the nethike embrane taken out in step (2) be impregnated in described suspension, there is described in obtaining the oil-water separation mesh film of super hydrophilic oleophobic property and lead ion response.Oil-water separation mesh film provided by the invention, may be used for oil-containing, containing in the sewage disposal of lead ion.Because it has lead ion response, can separative efficiency be realized high, the water-oil separating performance that separating rate is fast, can lead ion be monitored simultaneously, thus strengthen separator performance, simplify sewage-treatment plant.This nethike embrane is nontoxic, environmental friendliness, has good stability, can be used for preparing on a large scale.
Description
Technical field
The invention belongs to solid material surface modification field, be specifically related to a kind of to there is oil-water separation mesh film of lead ion response and preparation method thereof.
Background technology
Environmental pollution is the world problem come along with the fast development of modern industrial society, in industrial production can a large amount of discharge containing heavy metal, complex wastewater containing greasy dirt, therefore efficiently processing, be separated and reclaim oil-polluted water becomes the problem needing solution badly.Current, utilize special wellability surfacing to carry out water-oil separating, become the study hotspot of material science.And the heavy metal that may exist in oil-polluted water, can produce whole sewage disposal system and have a strong impact on.
For the heavy metal ion monitoring in sewage, often need very accurate instrument.Use ion indicator or Clod Vapour Atomic Absorption spectrum as needed in the observation process of lead ion, the former needs the chemical reagent of at substantial, although and the latter is accurately wasted time and energy.
Existing patent report utilizes temperature, pH, humidity as the response factor in oil water separation process now.The dimethylaminoethyl methacrylate as utilized in CN103111096A with temperature and pH double-response characteristic modifies nethike embrane, obtains and has the temperature of super oleophobic properties under water, the oil-water separation mesh film of pH double-response.And in CN103601826A, utilize esterification to obtain hydrophobe-hydrophile alternating structure, humidity response can be realized.Above-mentioned patent only relates to the certain fields of response water-oil separating, and for ion, the report that particularly lead ion is also not relevant at present.The oil-water separation mesh film of lead ion response plays an important role to the process of oil-containing complex wastewater system.
Summary of the invention
The object of this invention is to provide and a kind of there is oil-water separation mesh film of lead ion response and preparation method thereof, simultaneously, this oil-water separation mesh film can realize fast from hydrophilic to hydrophobicity fundamental change under lead ion regulation and control, thus reaches the controlled oil-water separation of original position.
Provided by the present invention a kind ofly have lead ion response and have the preparation method of the oil-water separation mesh film of hydrophilic oleophobic properties, comprises the steps:
(1) cushioning liquid being 8.0 ~ 12.0 by Dopamine hydrochloride and pH value is mixed to get mixed solution;
(2) nethike embrane be impregnated in described mixed solution, obtain the nethike embrane that Surface coating gathers dopamine;
(3) mercaptan compound and alkaline medium are scattered in water obtain suspension, and the nethike embrane Surface coating that step (2) obtains being gathered dopamine impregnated in described suspension, namely obtains described oil-water separation mesh film after taking-up.
In above-mentioned preparation method, in step (1), the mass fraction of described Dopamine hydrochloride in described mixed solution is 0.1% ~ 20.0%, is preferably 0.1% ~ 1.0%, is specially 0.2 ~ 0.6%.
The pH value of described cushioning liquid is preferably 8.5.
Described cushioning liquid is specially the cushioning liquid (i.e. TRIS-HC1 buffer solution) of Tri(Hydroxymethyl) Amino Methane Hydrochloride.
In above-mentioned preparation method, in step (2), described nethike embrane can be metal fabric net or metal sponge; The order number of described nethike embrane is 100 order ~ 1000 orders, is specially 400 ~ 1000 orders.Described metal fabric netting gear body can be stainless (steel) wire, iron net, titanium net or aluminium alloy net, and described metal sponge specifically can be copper sponge or chromium sponge.
The time of described dipping can be 12 ~ 72 hours, is specially 48 ~ 72 hours.
In above-mentioned preparation method, before described step (2), described method also comprises the step of cleaning nethike embrane.The mixed solution (volume ratio is 1:1) of concrete available ethanol and acetone cleans (as ultrasonic cleaning) described nethike embrane.
In above-mentioned preparation method, in step (3), the mass fraction of described mercaptan compound in described suspension is 0.1% ~ 25.0%, is preferably 0.1% ~ 10.0%, is specially 2.5% ~ 5.0%.
Described mercaptan compound is the carboxylic acid polyalcohol that thiocarboxylic acid and/or end group contain sulfydryl.
Described thiocarboxylic acid is selected from following at least one: TGA, mercaptobutyric acid, dimercapto propionic acid, dimercaptosuccinic acid, mercapto succinic acid, cysteine, homocysteine and glutathione.
Described end group is specially end group containing the polyacrylic acid of sulfydryl, end group containing the polymethylacrylic acid etc. of sulfydryl containing the carboxylic acid polyalcohol (connected by covalent bond or synthesized by RAFT) of sulfydryl, is preferably the polyacrylic acid of end group containing sulfydryl.
Described end group is 100 ~ 1000 containing the degree of polymerization of the carboxylic acid polyalcohol of sulfydryl, is preferably 500 ~ 1000.
Described end group specifically prepares by following method containing the polyacrylic acid of sulfydryl:
By 7.2g acrylic acid (AA), 26.3mg chain-transferring agent (CTA, as 4-cyano group-4-ethyl three thioester substrate valeric acid), 3.2mg azodiisobutyronitrile (AIBN) and 5mL methyl alcohol is placed in polymerization pipe, magnetic agitation mixes, and uses the oxygen in nitrogen bubble 15min removing reaction system.After bubbling terminates, above-mentioned polymerization pipe is placed in the oil bath of 60 DEG C and reacts 12h.Pass into oxygen and stop reaction, use ether sedimentation to wash the polyacrylic acid of three acquisition purifying.
The mass fraction of described alkaline medium in described mixing suspension is 0.1% ~ 10.0%, is preferably 0.1% ~ 5.0%, more preferably 0.1% ~ 2.0%, specifically can be 1.0%.
Described alkaline medium is selected from following at least one: NaOH, potassium hydroxide, barium hydroxide and ammoniacal liquor, is preferably NaOH.
The time of described dipping is 3 ~ 24 hours, is specially 12 ~ 24 hours.
The oil-water separation mesh film that said method prepares also belongs to protection scope of the present invention, and its mesh aperture is 13 ~ 150 microns, specifically can be 13 ~ 40 microns.
Another object of the present invention utilizes above-mentioned oil-water separation mesh film to the characteristic of lead ion response, provides a kind of method of monitoring lead ion in oil-polluted water.
Described method is specific as follows: with described oil-water separating net UF membrane oil-polluted water; If described oil-water separation mesh film still keeps the characteristic of hydrophilic oleophobic, then show in described oil-polluted water not containing lead ion; If the characteristic of the hydrophilic oleophobic of described oil-water separation mesh film changes (as becoming hydrophilic and oleophilic, hydrophobic oleophilic oil), then show in oil-polluted water containing lead ion.
When lead ion in oil-polluted water reaches the saturated concentration of lead ion in the aqueous solution, then the surface property of described oil-water separation mesh film can be hydrophobic oleophilic oil by hydrophilic oleophobic fast transition; When the saturated concentration of lead ion during lead ion in oil-polluted water is lower than the aqueous solution, then only need increase the dip time of described oil-water separation mesh film in oil-polluted water, the characteristic of the hydrophilic oleophobic of described oil-water separation mesh film finally also can be made to change (as becoming hydrophilic and oleophilic, hydrophobic oleophilic oil).
Another object of the present invention utilizes above-mentioned oil-water separation mesh film to the characteristic of lead ion response, provides a kind of method purifying lead ion in oil-polluted water.
Described method is the oil-polluted water with the leaded ion of described oil-water separating net membrane filtration, makes carboxylic acid ion and the lead ion generation chelatropic reaction on oil-water separation mesh film surface, thus reaches the object of lead ion in purification oil-polluted water.
Described lead ion is lead (II) ion or tetravalence lead ion.
Oil-water separation mesh film provided by the invention has dredges oil properties under water, its under water to the contact angle of oil droplet at 150 °.Utilize the hydrophily of its surface coated carboxylic acid compound hydrogel simultaneously, and its micrometer grade hole gap, water can be made to soak nethike embrane rapidly and pass through.
Oil-water separation mesh film provided by the invention also has lead ion response, namely described oil-water separation mesh film has hydrophilic oleophobic property under without the sewage disposal environment of lead ion, water can be crossed only oily, and in the environment having lead ion, wellability can be there is and change in described oil-water separation mesh film, change hydrophobic oleophilic oil into by hydrophilic oleophobic property, oil only water can be crossed.
The oil-water separation mesh film with lead ion response provided by the invention, may be used for oil-containing, containing in the sewage disposal of lead ion.The lead ion response that described oil-water separation mesh film has, can realize separative efficiency high, the water-oil separating performance that separating rate is fast, can monitor lead ion simultaneously, thus strengthens separator performance, simplifies sewage-treatment plant.
Oil-water separation mesh film provided by the invention is nontoxic, environmental friendliness, has good stability, can be used for preparing on a large scale.
Accompanying drawing explanation
Fig. 1 is the surface topography stereoscan photograph of the oil-water separation mesh film of preparation in the embodiment of the present invention 1.
Fig. 2 be the oil-water separation mesh film of preparation in the embodiment of the present invention 1 at original state A, modify B after dopamine, modify polyacrylic acid after C, impregnated in 1mg/mL lead ion solution after D and after impregnated in saturated lead ion solution the water in air of E drip shape picture that (1.5 milliliters) and oil-in-water drip and angle changes.
Fig. 3 is that the oil-water separation mesh film prepared of the embodiment of the present invention 1 is for separating of the experimental provision of oil water mixture and experiment effect photo.A is the oil-water separation mesh film under normal condition, and b is the oil-water separation mesh film after impregnated in 1mg/mL lead ion solution, and c is the oil-water separation mesh film after impregnated in saturated lead ion solution.
Detailed description of the invention
Below by specific embodiment, the present invention will be described, but the present invention is not limited thereto.
Experimental technique described in following embodiment, if no special instructions, is conventional method; Described reagent and material, if no special instructions, all can obtain from commercial channels.
The present invention's end group used is obtained by following preparation method containing the polyacrylic acid of sulfydryl: by 7.2g acrylic acid (AA), 26.3mg chain-transferring agent (CTA, as 4-cyano group-4-ethyl three thioester substrate valeric acid), 3.2mg azodiisobutyronitrile (AIBN) and 5mL methyl alcohol is placed in polymerization pipe, magnetic agitation mixes, and uses the oxygen in nitrogen bubble 15min removing reaction system.After bubbling terminates, above-mentioned polymerization pipe is placed in the oil bath of 60 DEG C and reacts 12h.Pass into oxygen and stop reaction, use ether sedimentation to wash the polyacrylic acid of three acquisition purifying.
Embodiment 1, prepare the response oil-water separation mesh film of hydrophilic oleophobic
(1) 1000 object stainless (steel) wires being immersed in volume ratio is in the acetone of 1:1 and the mixed solution of ethanol ultrasonic 30 minutes, hot blast drying after cleaning;
(2) at ambient temperature, add the water of 60mL and the trishydroxymethylaminomethane of 0.24g, stir in the beaker of 100mL, instillation hydrochloric acid solution regulates pH to 8.5, obtains mixing cushioning liquid (TRIS-HCl buffer solution);
(3) 0.12g Dopamine hydrochloride is added the mixing cushioning liquid that step (2) obtains, obtain mixed solution.In this mixed solution, the mass percentage of Dopamine hydrochloride is 0.20%, and the mass percentage of trishydroxymethylaminomethane is 0.40%;
(4) step (1) dried stainless (steel) wire be impregnated in the mixed solution that step (3) obtains, place after 72 hours, take out and use deionized water rinsing, naturally drying;
(5) at room temperature, in the beaker of 100mL, add 60mL water, 3.0g is the polyacrylic acid of 500 and the NaOH of 0.6g by the RAFT method acquisition degree of polymerization, stir and obtain the polyacrylic suspension of end group containing sulfydryl, can smell the distinctive stink of mercaptan.Wherein, the initial polyacrylic mass percentage added is 5.0%, and the mass percentage of NaOH is 1.0%;
(6) stainless (steel) wire that Dopamine hydrochloride step (4) obtained is modified impregnated in the suspension in step (5).After normal temperature places 12 hours, with deionized water rinsing, after drying, obtain the oil-water separation mesh film with hydrophilic oleophobic property and lead ion response.
As shown in Figure 1, as seen from the figure, the average pore size of its mesh is 13 microns to the surface topography scanned photograph of the oil-water separation mesh film that the present embodiment obtains.
The oil-water separation mesh film that measurement the present embodiment obtains in atmosphere is 0 ° to the contact angle of the water droplet of 1.5 microlitres, and the contact angle that oil-in-water drips is 150 ° (as shown in Figure 2 C).Compared to the water contact angle 132 ° of original stainless (steel) wire, oily contact angle 129 ° (as shown in Figure 2 A), with the water contact angle 67 ° of stainless (steel) wire after modification dopamine, oily contact angle 144 ° (as shown in Figure 2 B), there occurs obvious change.
When described oil-water separation mesh film is immersed in 1mg/mL and saturated lead ion solution after 5 minutes respectively, the wellability that its contact angle demonstrates oil-water separation mesh film is reversed.After being immersed in 1mg/mL lead ion solution, its water contact angle becomes 122 °, and oily contact angle becomes 138 ° (as shown in Figure 2 D).And after the saturated lead ion solution of dipping, its water contact angle is 122 °, and oily contact angle is 0 ° (as shown in Figure 2 E).
The experimental provision shown in Fig. 3 is utilized to carry out oil-water separation test.Described oil-water separation mesh film being placed in the polytetrafluoroethylene (PTFE) fixture of two ends fixing glass pipe, is that the benzinum (oil red dyeing) of 1:1 pours top feed pipe (as shown in Figure 3 a) into the mixture of water by volume ratio.Water is rapidly by the also glass tube outflow from below of profit nethike embrane, and simultaneously red benzinum is blocked in the upper end of oil-water separation mesh film, obtains the You Heshui after being separated, realization separation object.
Above-mentioned experimental provision is utilized to carry out lead ion response test.Be that the benzinum aqueous mixtures of 1:1 pours into and is immersed in 1mg/mL and the oil-water separation mesh film of the saturated lead ion aqueous solution after 5 minutes respectively by volume ratio.As shown in Figure 3 b, profit can by the oil-water separation mesh film after the lead ion aqueous solution process of 1mg/mL, and when oil-water separation mesh film is submerged in saturated lead ion solution, oil can pass through nethike embrane and water can be blocked in (as shown in Figure 3 c) on nethike embrane.
When the benzinum aqueous mixtures by volume ratio being 1:1 pours on the water-oil separating film after being immersed in 0.01mg/mL lead ion aqueous solution 24h, water can be blocked in the effect on nethike embrane through nethike embrane can to realize oil equally.
Embodiment 2, prepare the response oil-water separation mesh film of hydrophilic oleophobic
(1) 400 object copper mesh being immersed in volume ratio is in the acetone of 1:1 and the mixed solution of ethanol ultrasonic 30 minutes, hot blast drying after cleaning;
(2) at ambient temperature, add the water of 60mL and the trishydroxymethylaminomethane of 0.24g, stir in the beaker of 100mL, instillation hydrochloric acid solution regulates pH to 8.5, obtains mixing cushioning liquid;
(3) Dopamine hydrochloride of 0.36g is added in the mixing cushioning liquid that step (2) obtains, obtain mixed solution.In this mixed solution, the mass percentage of Dopamine hydrochloride is 0.60%, and the mass percentage of trishydroxymethylaminomethane is 0.40%;
(4) step (1) dried copper mesh be impregnated in the mixed solution that step (3) obtains, place after 48 hours, take out and use deionized water rinsing, naturally drying;
(5) at room temperature, the water of 60mL is added in the beaker of 100mL, it is the polyacrylic acid of 1000 and the NaOH of 0.6g that 1.5g obtains the degree of polymerization by RAFT method, stirs and obtains the polyacrylic suspension of end group containing sulfydryl, can smell the distinctive stink of mercaptan.Wherein, the initial polyacrylic mass percentage added is 2.5%, and the mass percentage of NaOH is 1.0%;
(6) copper mesh that Dopamine hydrochloride step (3) obtained is modified impregnated in the suspension in step (5).After normal temperature places 12 hours, with deionized water rinsing, after drying, obtain the oil-water separation mesh film with hydrophilic oleophobic property and lead ion response.
The average pore size of the mesh of the oil-water separation mesh film that the present embodiment obtains is 38 microns.
The oil-water separation mesh film that measurement the present embodiment obtains in atmosphere is 0 ° to the contact angle of the water droplet of 1.5 microlitres, and the contact angle that oil-in-water drips is 150 °.When described oil-water separation mesh film is immersed in the lead ion aqueous solution of 1mg/mL after 5 minutes, the wellability that its contact angle demonstrates oil-water separation mesh film is reversed, and after impregnated in the saturated lead ion aqueous solution, its water contact angle is 120 °, and oily contact angle is 0 °.
The experimental provision shown in Fig. 3 is utilized to carry out oil-water separation test.Described oil-water separation mesh film being placed in the polytetrafluoroethylene (PTFE) fixture of two ends fixing glass pipe, is that the benzinum (oil red dyeing) of 1:1 pours top feed pipe into the mixture of water by volume ratio.Water is rapidly by the also glass tube outflow from below of profit nethike embrane, and simultaneously red benzinum is blocked in the upper end of oil-water separation mesh film, obtains the You Heshui after being separated, realization separation object.
Above-mentioned experimental provision is utilized to carry out lead ion response test.Be that the benzinum aqueous mixtures of 1:1 pours into and floods in the oil-water separation mesh film after 5 minutes in the saturated lead ion aqueous solution by volume ratio, oil can pass through nethike embrane and water can be blocked on nethike embrane.
Embodiment 3, prepare the response oil-water separation mesh film of hydrophilic oleophobic
(1) 1000 object aluminium alloy nets being immersed in volume ratio is in the acetone of 1:1 and the mixed solution of ethanol ultrasonic 30 minutes, hot blast drying after cleaning;
(2) at ambient temperature, add the water of 60mL and the trishydroxymethylaminomethane of 0.24g, stir in the beaker of 100mL, instillation hydrochloric acid solution regulates pH to 8.5, obtains mixing cushioning liquid;
(3) Dopamine hydrochloride of 0.36g is added the mixing cushioning liquid that step (2) obtains, obtain mixed solution.In this mixed solution, the mass percentage of Dopamine hydrochloride is 0.60%, and the mass percentage of trishydroxymethylaminomethane is 0.40%;
(4) dried for step (1) aluminium alloy net be impregnated in the mixed solution that step (3) obtains, place after 72 hours, take out and use deionized water rinsing, naturally drying;
(5) at room temperature, in the beaker of 100mL, add the NaOH of the water of 60mL, 3.0g mercapto succinic acid and 0.6g, stir the suspension obtaining mercapto succinic acid, can smell the distinctive stink of mercaptan.Wherein, the initial polyacrylic mass percentage added is 5.0%, and the mass percentage of NaOH is 1.0%;
(6) the aluminium alloy net that Dopamine hydrochloride step (3) obtained is modified impregnated in the suspension in step (5).After normal temperature places 24 hours, with deionized water rinsing, after drying, obtain the oil-water separation mesh film with hydrophilic oleophobic property and lead ion response.
The average pore size of the mesh of the oil-water separation mesh film that the present embodiment obtains is 13 microns.
The oil-water separation mesh film that measurement the present embodiment obtains in atmosphere is 0 ° to the contact angle of the water droplet of 1.5 microlitres, and the contact angle that oil-in-water drips is 150 °.When described oil-water separation mesh film is immersed in the lead ion aqueous solution of 1mg/mL after 5 minutes, the wellability that its contact angle demonstrates oil-water separation mesh film is reversed, and after the saturated lead ion solution of immersion, its water contact angle is 120 °, and oily contact angle is 0 °.
The experimental provision shown in Fig. 3 is utilized to carry out oil-water separation test.Described oil-water separation mesh film being placed in the polytetrafluoroethylene (PTFE) fixture of two ends fixing glass pipe, is that the benzinum (oil red dyeing) of 1:1 pours top feed pipe into the mixture of water by volume ratio.Water is rapidly by the also glass tube outflow from below of profit nethike embrane, and simultaneously red benzinum is blocked in the upper end of oil-water separation mesh film, obtains the You Heshui after being separated, realization separation object.
Above-mentioned experimental provision is utilized to carry out lead ion response test.Be that the benzinum aqueous mixtures of 1:1 pours into and floods in the oil-water separation mesh film after 5 minutes in the saturated lead ion aqueous solution by volume ratio, oil can pass through nethike embrane and water can be blocked on nethike embrane.
Claims (10)
1. a preparation method for oil-water separation mesh film, comprises the steps:
(1) cushioning liquid being 8.0 ~ 12.0 by Dopamine hydrochloride and pH value is mixed to get mixed solution; Described cushioning liquid is the cushioning liquid of Tri(Hydroxymethyl) Amino Methane Hydrochloride;
(2) nethike embrane be impregnated in described mixed solution, obtain the nethike embrane that Surface coating gathers dopamine;
(3) mercaptan compound and alkaline medium are scattered in water obtain suspension, and the nethike embrane Surface coating obtained in step (2) being gathered dopamine impregnated in described suspension, namely obtains the oil-water separation mesh film with super hydrophilic oleophobic property and lead ion response after taking-up;
Described mercaptan compound is the carboxylic acid polyalcohol that thiocarboxylic acid and/or end group contain sulfydryl;
Described thiocarboxylic acid is selected from following at least one: TGA, mercaptobutyric acid, dimercapto propionic acid, dimercaptosuccinic acid, mercapto succinic acid, cysteine, homocysteine and glutathione;
Described end group is selected from following at least one containing the carboxylic acid polyalcohol of sulfydryl: polyacrylic acid and polymethylacrylic acid.
2. preparation method according to claim 1, is characterized in that: in step (1), and the mass fraction of described Dopamine hydrochloride in described mixed solution is 0.1% ~ 20.0%;
The pH value of described cushioning liquid is 8.5.
3. preparation method according to claim 1 and 2, is characterized in that: in step (2), and described nethike embrane is metal fabric net or metal sponge;
The order number of described nethike embrane is 100 order ~ 1000 orders;
Described metal fabric net is specially stainless (steel) wire, iron net, titanium net or aluminium alloy net;
Described metal sponge is specially copper sponge or chromium sponge;
The time of described dipping can be 12 ~ 72 hours.
4. preparation method according to claim 1 and 2, is characterized in that: before described step (2), described method also comprises the step of cleaning copper mesh.
5. preparation method according to claim 1 or 2, is characterized in that: in step (3), and the mass fraction of described mercaptan compound in described suspension is 0.1% ~ 25.0%;
Described end group is 100 ~ 1000 containing the degree of polymerization of the carboxylic acid polyalcohol of sulfydryl;
The mass fraction of described alkaline medium in described mixing suspension is 0.1% ~ 10.0%;
Described alkaline medium is selected from following at least one: NaOH, potassium hydroxide, barium hydroxide and ammoniacal liquor;
The time of described dipping is 3 ~ 24 hours.
6. according to any one of claim 1-5, preparation method prepares oil-water separation mesh film.
7. oil-water separation mesh film according to claim 6, is characterized in that: described oil-water separation mesh film has hydrophilic oleophobic property and lead ion response;
The mesh aperture of described oil-water separation mesh film is 13 ~ 150 microns.
8. the method for lead ion in the oil-water separating net film monitoring oil-polluted water utilizing described in claim 6 or 7, comprise lower step: with described oil-water separating net UF membrane oil-polluted water, if described oil-water separation mesh film still keeps the characteristic of hydrophilic oleophobic, then show in described oil-polluted water not containing lead ion;
If the hydrophilic fuel shedding quality of described oil-water separation mesh film changes, then show in oil-polluted water containing lead ion.
9. method according to claim 8, is characterized in that: described in change into oil-water separation mesh film characteristic change hydrophilic and oleophilic or hydrophobic oleophilic oil into by hydrophilic oleophobic.
10. utilize a method for lead ion in the oil-water separation mesh film purification oil-polluted water described in claim 6 or 7, comprise the steps: the oil-polluted water with the leaded ion of described oil-water separating net membrane filtration.
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| CN104826363A (en) * | 2015-04-30 | 2015-08-12 | 清华大学 | Super-hydrophobic super-lipophilic emulsion separating mesh membrane, and production method and application thereof |
| CN105926366B (en) * | 2016-05-19 | 2017-06-27 | 山东交通学院 | A kind of temperature-responsive oil-water separation filter paper and preparation method thereof |
| CN106830389A (en) * | 2016-12-19 | 2017-06-13 | 浙江工业大学 | A kind of solid three-phase separating device of profit |
| CN107964318A (en) * | 2017-12-08 | 2018-04-27 | 山东交通学院 | A kind of preparation method of the Thermo-sensitive surface coating products based on dopamine |
| CN109011701B (en) * | 2018-08-02 | 2020-04-28 | 华南理工大学 | Oil-water separation material with pH responsiveness and preparation method and application thereof |
| CN109012238B (en) * | 2018-08-13 | 2021-05-11 | 南京林业大学 | Preparation method of high-strength high-flux oil-water separation membrane and oil-water separation membrane |
| CN109576997B (en) * | 2018-11-16 | 2020-03-06 | 江南大学 | Preparation method of self-repairing super-hydrophobic fabric |
| CN110194504A (en) * | 2019-06-27 | 2019-09-03 | 中国空间技术研究院 | The preparation method of superhydrophilic superoleophobic water-oil separating sponge |
| CN112675576B (en) * | 2019-10-17 | 2022-05-31 | 天津大学 | Oil-water separation membrane and preparation method and application thereof |
| CN111330457B (en) * | 2020-02-21 | 2022-03-18 | 平顶山学院 | Preparation and application of pH-responsive natural plant oil-water separation filter membrane |
| CN114397229B (en) * | 2021-12-24 | 2023-12-05 | 广东省科学院化工研究所 | Heavy metal response composite emulsion and preparation method and application thereof |
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| CN102961893A (en) * | 2012-11-07 | 2013-03-13 | 清华大学 | Super-hydrophobic and super-oleophylic oil-water separating mesh membrane and preparation method thereof |
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| CN102961893A (en) * | 2012-11-07 | 2013-03-13 | 清华大学 | Super-hydrophobic and super-oleophylic oil-water separating mesh membrane and preparation method thereof |
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