TiO2/CNTs/PES composite forward osmosis membrane, preparation method and application thereof

A technology of forward osmosis membrane and base membrane, applied in the field of TiO2/CNTs/PES composite forward osmosis membrane and its preparation, can solve the potential hazards of aquatic animals, plants and human health, the spread of drug-resistant bacteria and resistant genes, and the difficulty of degrading antibiotics and other problems, to achieve the effect of high mechanical properties, strong permeability, and strong hydrophilicity

Inactive Publication Date: 2018-10-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Trace amounts of antibiotics in wastewater are difficult to degrade, and are likely to cause the spread of drug-resistant bacteria and resistant genes, which pose a great potential hazard to aquatic animals, plants and human health. Conventional treatment methods have low removal efficiency, and it is urgent to find new methods to remove them efficiently. antibiotic

Method used

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  • TiO2/CNTs/PES composite forward osmosis membrane, preparation method and application thereof
  • TiO2/CNTs/PES composite forward osmosis membrane, preparation method and application thereof
  • TiO2/CNTs/PES composite forward osmosis membrane, preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0031] (1) Weigh 0.0715gTiO respectively 2 and 0.0307g of CNTs were dispersed in 12mL of DMF solvent, ultrasonicated for 30min, then 3.9822g of PES was added, placed on a magnetic stirrer with the temperature set at 65°C and stirred for 5-6h to obtain 26wt% PES, 0.45wt% TiO 2 , 0.2wt% CNTs uniform spinning solution, and then the spinning solution was left standing for degassing for 2 hours to obtain TiO 2 / CNTs / PES spinning solution.

[0032] (2) Wind the PET non-woven fabric and stick it on the receiving roller; slowly pour the spinning solution prepared in step (1) into a 10mL syringe, the syringe needle adopts a flat needle with an inner diameter of 0.7mm, and then place the syringe Connect the high-voltage power supply to the controller; carry out electrospinning, and the spinning parameters are set as follows: the spinning voltage is 20kV, the spinning liquid propulsion speed is 1mL / h, the receiving roller speed is 300r / min, the spinneret and the receiving roller are Th...

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Abstract

The invention relates to a TiO2 / CNTs / PES composite forward osmosis membrane, a preparation method and application thereof. The TiO2 / CNTs / PES composite forward osmosis membrane includes a nonwoven fabric support layer, a TiO2 / CNTs / PES electrospinning base film layer and a polyamide active layer. The preparation method includes: subjecting TiO2 and CNTs to ultrasonic dispersion in DMF, adding PES, conducting mixing and standing defoaming to obtain a spinning solution; performing electrospinning on the nonwoven fabric to obtain a nonwoven fabric supported TiO2 / CNTs / PES electrospinning base film layer; and adopting monomers TMC and MPD for layer-by-layer self-assembly on the top layer of the TiO2 / CNTs / PES electrospinning base film layer to form a polyamide active layer. The composite forward osmosis membrane provided by the invention can be used for treating antibiotic wastewater, and has the characteristics of high water flux, pollution resistance and high antibiotic retention rate.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a TiO 2 / CNTs / PES composite forward osmosis membrane and its preparation method and application. Background technique [0002] Trace amounts of antibiotics in wastewater are difficult to degrade, and are likely to cause the spread of drug-resistant bacteria and resistant genes, which are potentially harmful to aquatic animals, plants and human health. The removal efficiency of conventional treatment methods is low, and it is urgent to find new methods to remove them efficiently. antibiotic. [0003] Forward Osmosis (FO) membrane technology is a membrane technology that has been studied more in recent years. Because of its low energy consumption and anti-pollution performance, it has a wide application prospect. Among them, electrospinning technology has recently been used to prepare forward osmosis membranes due to its advanced technology and wide application fields. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/68B01D69/12B01D67/00B01D61/00C02F1/44
CPCB01D61/002B01D67/0002B01D69/12B01D71/68B01D2323/39C02F1/445
Inventor 黄满红邓倩李贝贝吴敏杰宋佳玲邱靖涵
Owner DONGHUA UNIV
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