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PES ultra-filtration film loaded with Ag-TiO2 and preparation method and application of PES ultra-filtration film

An ultrafiltration membrane, surface loading technology, applied in ultrafiltration, chemical instruments and methods, membranes, etc., can solve the problems of reducing membrane treatment performance, limiting the application of membrane separation technology, low chemical energy consumption, etc., to achieve enhanced anti-pollution performance. , effective separation, low chemical energy consumption

Inactive Publication Date: 2017-11-24
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the main application technology in membrane separation, ultrafiltration membrane has the advantages of low chemical energy consumption and high efficiency, but membrane fouling reduces the processing performance of the membrane and limits the application of membrane separation technology

Method used

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  • PES ultra-filtration film loaded with Ag-TiO2 and preparation method and application of PES ultra-filtration film
  • PES ultra-filtration film loaded with Ag-TiO2 and preparation method and application of PES ultra-filtration film
  • PES ultra-filtration film loaded with Ag-TiO2 and preparation method and application of PES ultra-filtration film

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Effect test

Embodiment 1

[0026] The present invention is loaded with Ag-TiO 2 The preparation method of the PES ultrafiltration membrane specifically comprises the steps:

[0027] Step 1, prepare PES ultrafiltration membrane: add 8g polyethersulfone and 1g polyvinylpyrrolidone into 43.5mL dimethylacetamide solvent, seal and stir at room temperature for 24h to obtain casting solution; place casting solution at room temperature Degas for 6 hours, then pour about 15mL of casting solution on the glass plate, scrape the film on the glass plate at a constant speed of 0.5cm / s with a scraper knife; put the glass plate coated with casting solution flat into the deionized The phase conversion is carried out in water, and the PES ultrafiltration membrane is obtained after 24 hours;

[0028] Step 2: Preparation of Ag-TiO 2 Composite sol: Mix 23.5mL tetrabutyl titanate, 4.8mL diethanolamine and 67.3mL absolute ethanol, stir at room temperature for 120min to obtain mixed solution A; mix 10mL deionized water and 1...

Embodiment 2

[0031] The present invention is loaded with Ag-TiO 2 The preparation method of the PES ultrafiltration membrane specifically comprises the steps:

[0032] Step 1, prepare PES ultrafiltration membrane: add 8g polyethersulfone and 1g polyvinylpyrrolidone into 43.5mL dimethylacetamide solvent, seal and stir at room temperature for 24h to obtain casting solution; place casting solution at room temperature Degas for 6 hours, then pour about 15mL of casting solution on the glass plate, scrape the film on the glass plate at a constant speed of 0.5cm / s with a scraper knife; put the glass plate coated with casting solution flat into the deionized The phase conversion is carried out in water, and the PES ultrafiltration membrane is obtained after 24 hours;

[0033] Step 2: Preparation of Ag-TiO 2 Composite sol: Mix 23.5mL tetrabutyl titanate, 4.8mL diethanolamine and 67.3mL absolute ethanol, stir at room temperature for 120min to obtain mixed solution A; mix 10mL deionized water and 1...

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Abstract

The invention discloses a PES ultra-filtration film loaded with Ag-TiO2, and discloses a preparation method and application of the PES ultra-filtration film loaded with Ag-TiO2. A PES ultra-filtration film is soaked in an Ag-TiO2 composite sol to obtain a PES ultra-filtration film loaded with Ag-TiO2 on the surface. Because an Ag-TiO2 photocatalysis material is arranged on the surface of the PES ultra-filtration film loaded with Ag-TiO2, the water contact angle of the ultra-filtration film becomes small; pollution of the film is reduced favorably, and then the flux of the film is increased; and moreover, under irradiation of visible light, the Ag-TiO2 photocatalysis material on the surface of the film can degrade pollutants on the surface of the PES ultra-filtration film, therefore, pollution on the film is further reduced, and the flux of the film is increased.

Description

technical field [0001] The invention relates to a loaded Ag-TiO 2 The PES ultrafiltration membrane also involves the above-mentioned loaded Ag-TiO 2 The invention discloses a preparation method and application of a PES ultrafiltration membrane, belonging to the technical field of filtration membranes. Background technique [0002] The current pollution of drinking water sources has become one of the main problems endangering the safety of drinking water for human beings. Humic acid in water accounts for about 70% of the total organic matter in water, and is the main component of organic matter in water. In addition to affecting the chroma of water, humic acid will generate disinfection by-products in the process of disinfection of drinking water. This hazard has attracted great attention. How to efficiently remove humic acid in drinking water sources has become an environmental field research hotspots. [0003] Membrane separation technology is one of the most promising h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/02B01D71/48B01D61/14B01D67/00C02F1/30C02F1/44C02F101/30
CPCB01D61/145B01D67/0093B01D69/02B01D71/48B01D2325/10B01D2325/48C02F1/30C02F1/444C02F2101/30C02F2305/10
Inventor 杨汉培毛静涛朱鸿宇高照郭润强尤晓慧
Owner HOHAI UNIV
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