Preparation method for increasing particle load capacity of multifunctional hybrid membrane

A technology of hybrid membrane and loading capacity, which is applied in the direction of chemical instruments and methods, membranes, membrane technology, etc., can solve the problem of low particle loading of multifunctional hybrid ultrafiltration membranes, and achieve improved catalytic/adsorption effects and improved treatment Effect, effect of increased contact chance

Active Publication Date: 2018-12-18
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 prepar

Method used

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  • Preparation method for increasing particle load capacity of multifunctional hybrid membrane
  • Preparation method for increasing particle load capacity of multifunctional hybrid membrane
  • Preparation method for increasing particle load capacity of multifunctional hybrid membrane

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 load capacity of a multifunctional hybrid membrane, and belongs to the technical field of membrane separation for wastewater treatment. The preparation method for increasing the particle load capacity of the multifunctional hybrid membrane comprises the following steps: pre-dispersing a granular material to obtain a dispersion, uniformly mixing the dispersion with a membrane matrix composition composed of a polymer and an organic solvent in order to form a mixed solution, heating the mixed solution to removing a dispersant to a membrane casting solution, knife-coating the matrix carrier with the membrane casting solution, and carrying out phase conversion to remove the organic solvent in order to produce the multifunctional hybrid ultrafilter membrane. Nano-particles are pre-dispersed by the dispersant to improve the dispersibility of the granular material in the film; and the viscosity and the concentration of the membrane casting solution are ensured by removing the dispersant. The method can keep the ultrafiltration performance and the permeation performance of the multifunctional hybrid membrane under a high particle load capacity, and also can improve the treatment effect of the unit mass of the granular material.

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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IPC IPC(8): C02F1/28C02F1/44C02F1/72
CPCC02F1/28C02F1/444C02F1/725B01D61/145B01D67/0018B01D67/0079B01D69/148B01D71/022B01D71/34B01D71/68B01D71/024B01D71/021B01D67/0016B01D71/10B01D71/0211B01D67/0011B01D67/0013B01D69/145B01D69/147B01D71/64B01D2323/02
Inventor 张炜铭任逸潘丙才花铭吕路
Owner NANJING UNIV
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