CN103406031A - Low-resistance high-flux soiling resistant type water treatment membrane and preparation method thereof - Google Patents
Low-resistance high-flux soiling resistant type water treatment membrane and preparation method thereof Download PDFInfo
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- CN103406031A CN103406031A CN2013103203785A CN201310320378A CN103406031A CN 103406031 A CN103406031 A CN 103406031A CN 2013103203785 A CN2013103203785 A CN 2013103203785A CN 201310320378 A CN201310320378 A CN 201310320378A CN 103406031 A CN103406031 A CN 103406031A
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Abstract
The invention discloses a low-resistance high-flux soiling resistant type water treatment membrane. The membrane takes a sulfonated polyethersulfone-polysulfone/TiO2 ultrafiltration membrane as a template, FeCl2 as a reducing agent; Fe3O4 nano particles are generated through in-situ chemical sedimentation in basal membrane aperture passages so that Fe3O4/sulfonated polyethersulfone-polysulfone/TiO2 ultrafiltration membrane is obtained. The invention also discloses a preparation method for the water treatment membrane. The invention has the benefits that TiO2 and membrane material are mixed to enhance the hydrophilcity of the membrane, enlarge membrane flux, improve membrane surface rough degree, delay membrane fouling and prolong membrane service life; with the polyethersulfone, superior chemical stability, heat resistance and mechanical strength are provided; the Fe3O4 is adopted as magnetic medium to combine the magnetic ultrafiltration membrane, and continuous separation of series of materials of different molecular weight ranges is realized through adjusting additional magnetic field. Compared with the prior art, the membrane has the advantages of small resistance, large flux, soiling resistance, long service life and the like.
Description
Technical field
The present invention relates to polymer film parting material field, particularly a kind of low-resistance high flux anti-pollution type membrane for water treatment and preparation method thereof.
Background technology
Ultrafiltration is a kind ofly to take pressure reduction and be the green separation technology of power, simple to operate owing to having, nothing is separated, energy consumption is low, high treating effect, is used widely at industrial circles such as bio-pharmaceuticals, water treatments.For the research of milipore filter, report is arranged both at home and abroad in recent years, prepared milipore filter can be used for the fields such as enzyme processing, wastewater treatment.Along with the development of membrane separation technique, the membrane material of developing high-performance, many kinds has caused people's attention.Developing rapidly of polymer blended technology in recent years, for the exploitation of novel film materials provides simple and effective new way.
In polymer film parting material field, polyvinyl chloride (PVC) has the characteristics such as good acid and alkali-resistance, fungus resistance, but its gel mould is easily spontaneous wrinkling, and film forming is not very desirable, poor, the easy pollution of hydrophily, flux are low etc., and problem has limited its further developing in ultrafiltration, micro-filtration field.As a kind of blending modification method of polyvinylidene fluoride ultrafiltration membrane (publication number is CN 101905123 A) of Dalian Inst of Chemicophysics, Chinese Academy of Sciences's application, the method is mainly the antifouling property that has improved film, on hydrophilicity, improves less; Simultaneously also there are some can make film have the permanent hydrophilic performance, the polysulfone hollow fibre milipore filter and the manufacture method (publication number is CN 1557532 A) thereof that if a kind of, have permanent hydrophilic, although the method has been improved the hydrophilicity of film, but its Fabrication parameter is more, process is loaded down with trivial details, affect its suitability for industrialized production.
Summary of the invention
One of purpose of the present invention is to overcome the deficiencies in the prior art part, provides a kind of low-resistance high flux anti-pollution type membrane for water treatment, i.e. Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The magnetic milipore filter.
Two of purpose is to provide the preparation method of above-mentioned membrane for water treatment.
To achieve these goals, the technical solution adopted in the present invention is: a kind of low-resistance high flux anti-pollution type membrane for water treatment is Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The magnetic milipore filter, described magnetic milipore filter is with sulfonated polyether sulfone-polysulfones/TiO
2Milipore filter is template, in the basement membrane duct, nanometer Fe is arranged
3O
4Particle.
Described nanometer Fe
3O
4Particle is with FeCl
2For reducing agent, adopt the in-situ chemical deposition to generate.
A kind of preparation method of low-resistance high flux anti-pollution type membrane for water treatment comprises the following steps:
(1) sulfonated polyether sulfone/polysulfones/TiO
2The preparation of milipore filter:
A, TiO
2The preparation of colloidal sol: under room temperature, add butyl titanate and glacial acetic acid at absolute ethyl alcohol, stir, obtain solution A; In ethanolic solution, drip concentrated hydrochloric acid, regulate pH=1, stir, obtain solution B; Solution B slowly is added drop-wise in solution A, simultaneously vigorous stirring; Solution A and solution B namely obtain TiO after mixing fully
2Colloidal sol;
B, sulfonated polyether sulfone/polysulfones/TiO
2Casting solution: the TiO that will make
2Colloidal sol is added drop-wise in the casting solution of the polymer, mass fraction 2% triethyl phosphate and mass fraction 5% phosphoric acid that contain sulfonated polyether sulfone that mass fraction 16%～18% blending ratio is 4:1 and polysulfones under stirring condition, at room temperature discontinuous degassing 24 h after continuous stirring 24 h, make sulfonated polyether sulfone/polysulfones/TiO
2Casting solution;
C, with scraper by above-mentioned sulfonated polyether sulfone/polysulfones/TiO
2Casting solution at the uniform velocity is coated on the masking plate, and evaporation 30 s, then be placed in coagulation bath by the masking plate, makes sulfonated polyether sulfone/polysulfones/TiO
2Milipore filter;
(2) Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The preparation of magnetic milipore filter: with sulfonated polyether sulfone/polysulfones/TiO
2Milipore filter is base film, and after infiltration 10min, tiling is placed in the FeCl that 0.2 mol/L is housed in ethanol solution
2In ethanolic solution, then slowly add the NaOH aqueous solution of 2 mol/L, after reaction 50 min, composite membrane is taken out, after washing, immersion, drying, namely obtain Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The magnetic milipore filter.
Described casting solution is DMA, DMF, METHYLPYRROLIDONE or dimethyl sulphoxide solution.
The invention has the beneficial effects as follows: use TiO
2Hydrophily with membrane material blend enhancing film, increase membrane flux, improves the degree of roughness on film surface, delays film and pollute, and extends the service life of film; Use polysulfones-like polymer, it has good chemical stability, heat resistance and mechanical strength; Use Fe
3O
4As magnetic medium synthesizing magnetic milipore filter, realize a series of materials of continuous separate from different molecular weight ranges by regulating externally-applied magnetic field.Compared with the prior art, have the advantages such as resistance is little, flux large, anti-pollution, life-span length.
The specific embodiment
Below the specific embodiment of the present invention is elaborated, but it is pointed out that protection scope of the present invention is not subjected to the restriction of these specific embodiment, but determined by claims.
A kind of low-resistance high flux anti-pollution type membrane for water treatment is Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The magnetic milipore filter, with FeCl
2For reducing agent, the in-situ chemical deposition generates nanometer Fe in the basement membrane duct
3O
4Particle, the preparation method carries out according to following step:
(1) sulfonated polyether sulfone/polysulfones/TiO
2The preparation of milipore filter:
A.TiO
2The preparation of colloidal sol: under room temperature, get respectively 11.35 g butyl titanates and 3 mL glacial acetic acids and add and be placed in the beaker that 12.60 mL absolute ethyl alcohols are housed, stir and make it to mix, obtain light yellow transparent solution A; In the solution be made into to 2.40 mL redistilled waters and 4.80 mL absolute ethyl alcohols, drip concentrated hydrochloric acid, adjust pH=1, fully stir and obtain homogeneous solution B; Solution B slowly is added drop-wise in solution A, simultaneously vigorous stirring; Solution A and solution B namely stablized after mixing fully, transparent TiO
2Colloidal sol;
B. sulfonated polyether sulfone/polysulfones/TiO
2Casting solution: the TiO that will make
2Colloidal sol quantitative (mass fraction is 9.3 %) under stirring condition is added drop-wise in the casting solution that contains mass fraction 16% polymer (blending ratio is sulfonated polyether sulfone and the polysulfones of 4:1), mass fraction 2% triethyl phosphate and mass fraction 5% phosphoric acid, discontinuous degassing 24 h after continuous stirring 24 h at room temperature, make homogeneous, stable, transparent sulfonated polyether sulfone/polysulfones/TiO
2Casting solution;
C. with scraper by above-mentioned sulfonated polyether sulfone/polysulfones/TiO
2Casting solution at the uniform velocity is coated on the masking plate of cleaning, drying, and evaporation 30 s, then be placed in coagulation bath by the masking plate, makes sulfonated polyether sulfone/polysulfones/TiO
2Milipore filter;
(2) Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The preparation of magnetic milipore filter: with sulfonated polyether sulfone/polysulfones/TiO
2Milipore filter is base film, and after infiltration 10min, tiling is placed in the FeCl that 0.2 mol/L is housed in ethanol solution
2In ethanolic solution, then slowly add the NaOH aqueous solution of 2 mol/L, after reaction 50 min, composite membrane is taken out, after washing, immersion, drying, namely obtain Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The magnetic milipore filter.
Casting solution is DMA, DMF, METHYLPYRROLIDONE or dimethyl sulphoxide solution.
By Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The magnetic milipore filter is put into the ultrafiltration cup, then adds wherein the deionized water of certain volume, under room temperature under 0.1 MPa precompressed 30 min, measure the pure water flux of film; In additional magnetic field intensity, be under 0.8 T effect, UV-1600 type ultraviolet specrophotometer detects under 280 nm, measures Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The rejection of magnetic milipore filter to lysozyme.After test, obtaining its water flux is 489L/ (hm
2), to the rejection of the lysozyme that is in isoelectric point from without magnetic field the time, 80.25% rise to 87.25% under 0.8 T magnetic field.
Claims (4)
1. a low-resistance high flux anti-pollution type membrane for water treatment, is characterized in that: be Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The magnetic milipore filter, described magnetic milipore filter is with sulfonated polyether sulfone-polysulfones/TiO
2Milipore filter is template, in the basement membrane duct, nanometer Fe is arranged
3O
4Particle.
2. low-resistance high flux anti-pollution type membrane for water treatment according to claim 1, is characterized in that: described nanometer Fe
3O
4Particle is with FeCl
2For reducing agent, adopt the in-situ chemical deposition to generate.
3. the preparation method of low-resistance high flux anti-pollution type membrane for water treatment according to claim 1 is characterized in that comprising the following steps:
(1) sulfonated polyether sulfone/polysulfones/TiO
2The preparation of milipore filter:
A, TiO
2The preparation of colloidal sol: under room temperature, add butyl titanate and glacial acetic acid at absolute ethyl alcohol, stir, obtain solution A; In ethanolic solution, drip concentrated hydrochloric acid, regulate pH=1, stir, obtain solution B; Solution B slowly is added drop-wise in solution A, simultaneously vigorous stirring; Solution A and solution B namely obtain TiO after mixing fully
2Colloidal sol;
B, sulfonated polyether sulfone/polysulfones/TiO
2Casting solution: the TiO that will make
2Colloidal sol is added drop-wise in the casting solution of the polymer, mass fraction 2% triethyl phosphate and mass fraction 5% phosphoric acid that contain sulfonated polyether sulfone that mass fraction 16%～18% blending ratio is 4:1 and polysulfones under stirring condition, at room temperature discontinuous degassing 24 h after continuous stirring 24 h, make sulfonated polyether sulfone/polysulfones/TiO
2Casting solution;
C, with scraper by above-mentioned sulfonated polyether sulfone/polysulfones/TiO
2Casting solution at the uniform velocity is coated on the masking plate, and evaporation 30 s, then be placed in coagulation bath by the masking plate, makes sulfonated polyether sulfone/polysulfones/TiO
2Milipore filter;
(2) Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The preparation of magnetic milipore filter: with sulfonated polyether sulfone/polysulfones/TiO
2Milipore filter is base film, and after infiltration 10min, tiling is placed in the FeCl that 0.2 mol/L is housed in ethanol solution
2In ethanolic solution, then slowly add the NaOH aqueous solution of 2 mol/L, after reaction 50 min, composite membrane is taken out, after washing, immersion, drying, namely obtain Fe
3O
4/ sulfonated polyether sulfone-polysulfones/TiO
2The magnetic milipore filter.
4. preparation method according to claim 3, it is characterized in that: described casting solution is DMA, DMF, METHYLPYRROLIDONE or dimethyl sulphoxide solution.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861467A (en) * | 2013-12-28 | 2014-06-18 | 太平洋水处理工程有限公司 | Low-temperature hydrothermal method for preparing strong hydrophilic anti-pollution composite membrane and application of membrane |
| CN105617870A (en) * | 2015-12-22 | 2016-06-01 | 北京理工大学 | Method for modifying ultrafiltration membrane through nano-particle coating |
| CN108654395A (en) * | 2018-05-16 | 2018-10-16 | 南京帝膜净水材料开发有限公司 | A kind of formula and preparation method thereof of preparation of anti-fouling ultrafiltration membrane piece |
| CN108854549A (en) * | 2018-06-28 | 2018-11-23 | 江苏泓膜业科技有限公司 | A kind of preparation method weaving tube enhancement type hollow fiber ultrafiltration membrane |
| CN110719809A (en) * | 2017-06-06 | 2020-01-21 | 环球油品有限责任公司 | Transport membrane for olefin/paraffin separation |
| CN110975635A (en) * | 2019-11-11 | 2020-04-10 | 北京航空航天大学 | Magnetic fluid/porous net composite membrane and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101088595A (en) * | 2007-07-11 | 2007-12-19 | 湖北工业大学 | Process of preparing plate porous membrane with high permeating flux |
| WO2012102678A1 (en) * | 2011-01-24 | 2012-08-02 | Nano-Mem Pte. Ltd. | A forward osmosis membrane |
| CN102688705A (en) * | 2011-03-22 | 2012-09-26 | 中国科学院生态环境研究中心 | Hydrophilic modification method of PVDF ultrafilter membrane by utilization of nano-TiO2 sol |
-
2013
- 2013-07-29 CN CN2013103203785A patent/CN103406031A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101088595A (en) * | 2007-07-11 | 2007-12-19 | 湖北工业大学 | Process of preparing plate porous membrane with high permeating flux |
| WO2012102678A1 (en) * | 2011-01-24 | 2012-08-02 | Nano-Mem Pte. Ltd. | A forward osmosis membrane |
| CN102688705A (en) * | 2011-03-22 | 2012-09-26 | 中国科学院生态环境研究中心 | Hydrophilic modification method of PVDF ultrafilter membrane by utilization of nano-TiO2 sol |
Non-Patent Citations (3)
| Title |
|---|
| PARISA DARAEI ET AL.: "Fouling resistant mixed matrix polyethersulfone membranes blended with magnetic nanoparticles: Study of magnetic field induced casting", 《SEPARATION AND PURIFICATION TECHNOLOGY》 * |
| 潘见等: "Fe3O4/PSF 磁性复合超滤膜的制备、表征及应用", 《膜科学与技术》 * |
| 谭翎燕等: "磺化聚醚砜(SPES)/聚砜(PSF)共混超滤膜的研制", 《化工进展》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861467A (en) * | 2013-12-28 | 2014-06-18 | 太平洋水处理工程有限公司 | Low-temperature hydrothermal method for preparing strong hydrophilic anti-pollution composite membrane and application of membrane |
| CN105617870A (en) * | 2015-12-22 | 2016-06-01 | 北京理工大学 | Method for modifying ultrafiltration membrane through nano-particle coating |
| CN110719809A (en) * | 2017-06-06 | 2020-01-21 | 环球油品有限责任公司 | Transport membrane for olefin/paraffin separation |
| CN108654395A (en) * | 2018-05-16 | 2018-10-16 | 南京帝膜净水材料开发有限公司 | A kind of formula and preparation method thereof of preparation of anti-fouling ultrafiltration membrane piece |
| CN108854549A (en) * | 2018-06-28 | 2018-11-23 | 江苏泓膜业科技有限公司 | A kind of preparation method weaving tube enhancement type hollow fiber ultrafiltration membrane |
| CN110975635A (en) * | 2019-11-11 | 2020-04-10 | 北京航空航天大学 | Magnetic fluid/porous net composite membrane and preparation method and application thereof |
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Application publication date: 20131127 |