Method for modifying ultrafiltration membrane through multiwalled carbon nanotube

A multi-walled carbon nanotube and ultrafiltration membrane technology, applied in the field of modified ultrafiltration membranes, can solve problems such as low removal rate, and achieve the effects of improving surface activity, reducing scaling and good treatment effect

Inactive Publication Date: 2015-12-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the removal efficiency of the current multi-walled carbon nanotube-modified ultrafiltration membranes for ARGs is still low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0019] Embodiment 1: This embodiment is a method for modifying an ultrafiltration membrane with multi-walled carbon nanotubes, which is specifically carried out in the following steps:

[0020] 1. Weigh raw materials: Weigh 12-27 parts of film substrate, 0.1-4 parts of multi-walled carbon nanotubes, 0.02-1.1 parts of film additives, 0.5-2 parts of barrier layer components, 0.08 parts by weight 1 part to 1 part of antifouling layer components, 5 parts to 20 parts of dispersant, 72 parts to 90 parts of solvent, 0.05 part to 0.3 parts of surfactant and 2 parts to 10 parts of porogen; the film additive is Hexa base disiloxane; the film substrate is silicon nitride, polyphenylene oxide, polybenzoxazole, polyhydrazide, polymethimide, polyethylene terephthalate, polyquinoxa One or more mixtures of morphine and polyacetal; the porogen is LiCl or PEG; the surfactant is sorbitan monolaurate, glycerol monostearate or polyoxygen Vinyl cetyl ether; the barrier layer component is prepared ...

specific Embodiment approach 2

[0025] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the dispersant described in step 1 is toluene polystyrene-poly-3-hexylthiophene. Others are the same as the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the solvent described in step 1 is N-dimethylformamide, dioxane or chloroform. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method for modifying an ultrafiltration membrane and provides a method for modifying an ultrafiltration membrane through a multiwalled carbon nanotube to solve the technical problem that the removing rate of an existing ultrafiltration membrane modified by a multiwalled carbon nanotube for ARGs is still low. The method comprises the steps that firstly, raw materials are weighed; secondly, a functionalized multiwalled carbon nanotube is prepared; thirdly, the ultrafiltration membrane is prepared; fourthly, a polyamide barrier layer is deposited; fifthly, an antifouling layer is smeared. The method has the advantages that after water is subjected to ultrafiltration through the prepared ultrafiltration membrane modified through the multiwalled carbon nanotube, most macromolecules can be removed, only few micromolecules are left, then a reverse osmosis method is adopted, and the antibiotics micromolecules in the water can be easily removed. By applying the method to treating drinking water, the treating process is simple, the treating effect is good, and the method is low in cost and suitable for implementation and popularization. The method is suitable for the field of water treatment.

Description

technical field [0001] The invention relates to a method for modifying an ultrafiltration membrane. Background technique [0002] With the advancement of industrialization, water environment pollution and water resource shortage have become prominent problems worldwide, seriously restricting the sustainable development of social economy. Drinking water is a basic need for human survival and an important medium for spreading diseases. With the continuous improvement of people's living standards, people's requirements for the quality of drinking water are also getting higher and higher. Paying attention to water quality, drinking water and health is to meet the development needs of the times. [0003] In my country, with the continuous development of economy and rapid urbanization, the discharge of domestic sewage has increased sharply. However, among the more than 600 cities in my country, nearly half of them have no sewage treatment capacity, and a large amount of domestic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/02B01D71/02B01D71/58B01D71/40B01D71/60B01D71/48B01D71/38B01D67/00B01D61/14
Inventor 王彩虹梁恒瞿方术李圭白
Owner HARBIN INST OF TECH
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