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Arsenic removal nanofiber film with dual nanometer function core loads and preparing method thereof

A nanofiber membrane and nano-functional technology, which is applied in fiber treatment, textiles and papermaking, non-woven fabrics, etc., can solve the problems of low adsorption capacity and adsorption efficiency, insufficient structural strength, and low adsorption capacity, and achieve excellent chemical affinity, Effect of improving oxidation efficiency and improving adsorption efficiency

Active Publication Date: 2019-12-20
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, adsorption method is a relatively mature and simple water treatment technology, but the adsorption capacity and adsorption efficiency of traditional adsorption materials are low, and its removal effect on arsenic in water is poor, especially for trivalent arsenic. Poor, it is difficult to reduce trivalent arsenic and pentavalent arsenic in water to acceptable levels
Other existing modified or synthetic adsorption materials are limited by their own shape and function, such as powders that cannot be uniformly dispersed and easily lost, low adsorption capacity, poor adsorption selectivity, insufficient structural strength, and precipitation toxicity. There are certain limitations in application

Method used

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  • Arsenic removal nanofiber film with dual nanometer function core loads and preparing method thereof
  • Arsenic removal nanofiber film with dual nanometer function core loads and preparing method thereof
  • Arsenic removal nanofiber film with dual nanometer function core loads and preparing method thereof

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Effect test

Embodiment 1

[0030] A preparation method for arsenic-removing nanofiber membrane loaded with double nanometer functional core, comprising the following steps:

[0031] (1) PAN is dissolved in the mixed solvent of DMF and acetone to obtain PAN solution, then La(NO 3 ) 3 ·6H 2 O is added in the PAN solution to obtain the electrospinning solution; wherein, the volume ratio of DMF and acetone in the mixed solvent is 3:1, the mass ratio of PAN and La element in the electrospinning solution is 10:1, and the PAN in the electrospinning solution The mass fraction of is 8wt%;

[0032] (2) Electrospinning the electrospinning solution obtained in step (1) through an electrospinning device to obtain an electrospun film; wherein, the parameters of the electrospinning are: the spinning voltage is 20kv, and the receiving distance is 20cm.

[0033] (3) Place the electrospun membrane obtained in step (2) in a dopamine hydrochloride solution with a dopamine concentration of 2 g / L, vibrate at a speed of 13...

Embodiment 2

[0038] A preparation method for arsenic-removing nanofiber membrane loaded with double nanometer functional core, comprising the following steps:

[0039] (1) PAN is dissolved in the mixed solvent of DMF and acetone to obtain PAN solution, then La(NO 3 ) 3 ·6H 2 O is added in the PAN solution to obtain the electrospinning solution; wherein, the volume ratio of DMF and acetone in the mixed solvent is 2:1, the mass ratio of PAN and La element in the electrospinning solution is 8:1, and the PAN in the electrospinning solution The mass fraction of is 6wt%;

[0040] (2) Electrospinning the electrospinning solution obtained in step (1) through an electrospinning device to obtain an electrospun membrane; wherein, the parameters of the electrospinning are: the spinning voltage is 15kv, and the receiving distance is 30cm.

[0041] (3) Place the electrospun membrane obtained in step (2) in a dopamine hydrochloride solution with a dopamine concentration of 3 g / L, vibrate at a speed of...

Embodiment 3

[0045] A preparation method for arsenic-removing nanofiber membrane loaded with double nanometer functional core, comprising the following steps:

[0046] (1) PAN is dissolved in the mixed solvent of DMF and acetone to obtain PAN solution, then La(NO 3 ) 3 ·6H 2 O is added in the PAN solution to obtain the electrospinning solution; wherein, the volume ratio of DMF and acetone in the mixed solvent is 4:1, the mass ratio of PAN and La element in the electrospinning solution is 15:1, and the PAN in the electrospinning solution The mass fraction of is 10wt%;

[0047] (2) Electrospinning the electrospinning solution obtained in step (1) through an electrospinning device to obtain an electrospun film; wherein, the parameters of the electrospinning are: the spinning voltage is 30kv, and the receiving distance is 15cm.

[0048] (3) Place the electrospun membrane obtained in step (2) in a dopamine hydrochloride solution with a dopamine concentration of 1 g / L, vibrate at a speed of 1...

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Abstract

The invention discloses an arsenic removal nanofiber film with dual nanometer function core loads and a preparing method thereof, and belongs to the technical field of sewage treatment. The preparingmethod includes the following steps dissolving PAN in a DMF and acetone mixed solvent to obtain a PNA solution, adding La(NO3)3.6H2O to the PAN solution to obtain an electrostatic spinning solution, conducting electrostatic spinning on the obtained electrostatic spinning solution through an electrostatic spinning device to obtain an electric spinning film, putting the electric spinning film in a dopamine hydrochloride solution to be oscillated at a constant temperature, taking out the electric spinning film to be cleaned and dried, putting the obtained electric spinning film into a KMnO4 solution to be oscillated at a constant temperature, taking out the electric spinning film to be cleaned and dried to obtain the target product. The preparing method is simple, and the prepared nanofiber film can effectively remove arsenic ions at different valence states in a water body.

Description

technical field [0001] The invention relates to an arsenic-removing nanofiber membrane and a preparation method thereof, in particular to an arsenic-removing nanofiber membrane loaded with double-nano functional cores and a preparation method thereof, and belongs to the technical field of sewage treatment. Background technique [0002] With the development of the economy and the improvement of people's living standards, the discharge of arsenic is becoming more and more serious. More and more rivers and lakes are polluted by arsenic, which causes the deterioration of the aquatic ecosystem and the safety of drinking water quality, and brings great harm to human health. threaten. Therefore, it is imminent to efficiently remove arsenic from water. [0003] Arsenic exists in water mainly in the form of trivalent arsenic and pentavalent arsenic. Among them, the toxicity of trivalent arsenic is 60 times that of pentavalent arsenic, and trivalent arsenic is not easy to form stable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D01D5/00
CPCD01D5/003D01D5/0061D04H1/728
Inventor 李世阳黄翔峰马成锦刘佳陆丽君彭开铭
Owner TONGJI UNIV
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