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A preparation method for increasing the loading capacity of multifunctional hybrid membrane particles

A technology of loading capacity and hybrid membrane, which is applied in the field of preparation of increasing the particle loading capacity of multifunctional hybrid membrane, can solve the problem of low particle loading capacity of multifunctional hybrid ultrafiltration membrane, and achieves improved catalysis/adsorption effect, contact The effect of increased time and increased contact opportunities

Active Publication Date: 2021-06-22
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem of low particle loading of multifunctional hybrid ultrafiltration membranes prepared by traditional methods, and to provide a preparation method for increasing the particle loading of multifunctional hybrid ultrafiltration membranes

Method used

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  • A preparation method for increasing the loading capacity of multifunctional hybrid membrane particles
  • A preparation method for increasing the loading capacity of multifunctional hybrid membrane particles
  • A preparation method for increasing the loading capacity of multifunctional hybrid membrane particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this embodiment, a method for preparing a multifunctional hybrid ultrafiltration membrane is provided, the steps are as follows:

[0046] (1) Particle pre-dispersion

[0047] Add 300mg of MIL-53(Fe) granular material into 10mL of acetone, and ultrasonically mix for 30min to obtain a dispersion.

[0048] (2) Blending

[0049] Add 150mg of polyvinylidene fluoride to 2mL of N,N-dimethylformamide, mix well and dissolve completely by ultrasonication for 30min, then mix with the dispersion in step (1), and mix thoroughly by ultrasonication for 30min to obtain a blend .

[0050] (3) Remove dispersant

[0051] The mixture in (2) was heated at 60° C. for 24 hours by means of concentration and evaporation to remove the acetone therein to obtain the casting solution.

[0052] (4) film making

[0053] The casting solution obtained in step (3) is coated and scraped on a glass plate mechanism with a micron-adjustable membrane device, and the organic solvent is removed by ther...

Embodiment 2

[0078] In this embodiment, a method for preparing a multifunctional hybrid ultrafiltration membrane is provided, the steps are as follows:

[0079] (1) Particle pre-dispersion

[0080] 1g Fe 2 o 3 The nanoparticle material was added into 10 mL of methanol, stirred thoroughly and uniformly to obtain a dispersion.

[0081] (2) Blending

[0082] Add 1g of polyvinylidene fluoride to 100mL of N,N-dimethylformamide, stir well and mix evenly and completely dissolve, then mix with the dispersion in step (1), stir well and mix evenly to obtain a blend.

[0083] (3) Remove dispersant

[0084] The blend solution in (2) was heated at 40° C. for 5000 min by rotary evaporation to remove methanol therein to obtain a casting solution.

[0085] (4) film making

[0086] Apply the casting solution obtained in step (3) on a plastic plate with an automatic film wiper, immerse it in ultrapure water to remove the organic solvent through non-solvent phase inversion to form a multifunctional hyb...

Embodiment 3

[0089] In this embodiment, a method for preparing a multifunctional hybrid ultrafiltration membrane is provided, the steps are as follows:

[0090] (1) Particle pre-dispersion

[0091] Add 1mg of graphene oxide material into 1.26mL of ethanol, oscillate and mix thoroughly to obtain a dispersion.

[0092] (2) Blending

[0093] Add 99 mg of polyacrylonitrile to 1 mL of N,N-dimethylacetamide, oscillate to mix well and completely dissolve, then mix with the dispersion in step (1), oscillate and mix well to obtain a blend.

[0094] (3) Remove dispersant

[0095] The mixture in (2) was heated at 60° C. for 24 hours by rotary evaporation to remove ethanol to obtain a casting solution.

[0096] (4) film making

[0097] Apply the casting solution obtained in step (3) on a glass plate with an automatic wiper, immerse it in ultrapure water to remove the organic solvent through non-solvent phase inversion to form a multifunctional hybrid film.

[0098]The polyacrylonitrile hybrid ult...

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Abstract

The invention discloses a preparation method for increasing the particle loading capacity of a multifunctional hybrid membrane, and belongs to the technical field of membrane separation for wastewater treatment. Provided is a preparation method for increasing the loading capacity of multi-functional hybrid membrane particles, the method is as follows: first pre-disperse the particle material, and then mix the obtained dispersion with a membrane matrix solution composed of a polymer and an organic solvent to form a co- The mixed liquid, the casting solution obtained after heating to remove the dispersant is coated and scraped on the matrix carrier, and the organic solvent is removed by phase inversion to form a multifunctional hybrid ultrafiltration membrane. In the preparation method, the dispersant is used to pre-disperse the nanoparticles to improve the dispersibility of the particle material in the film; the viscosity and concentration of the casting liquid are guaranteed by removing the dispersant. Through the above method, the ultrafiltration performance and permeability of the multifunctional hybrid membrane can be maintained under the condition of high particle loading, while the treatment effect per unit mass of granular material can be relatively improved.

Description

technical field [0001] The invention belongs to the technical field of membrane separation for wastewater treatment, and in particular relates to a preparation method for increasing the loading capacity of multifunctional hybrid membrane particles. Background technique [0002] With the rapid development of economy and the improvement of people's living standards, people's requirements for environmental standards are getting higher and higher. As far as the water environment is concerned, treating wastewater up to standard is the key to ensuring good water quality. With the continuous upgrading and transformation of sewage treatment plants, the advanced treatment of wastewater has become a hot spot of research and people's attention. As a high-efficiency and low-cost technology, membrane technology has been widely used in the advanced treatment of various pollutants in different types of wastewater. Different types of filter membranes, such as microfiltration (MF), ultrafi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F1/44C02F1/72
CPCC02F1/28C02F1/444C02F1/725B01D67/00793B01D71/0211B01D71/024B01D67/0011B01D71/643B01D71/022B01D61/145B01D67/0018B01D69/148B01D71/34B01D71/68B01D71/10B01D71/421B01D71/441B01D69/145B01D69/147B01D2323/02
Inventor 张炜铭任逸潘丙才花铭吕路
Owner NANJING UNIV
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