Nanofiber membrane material for filtering M<3+> in water and preparation method thereof

A nanofiber membrane and nanofiber technology is applied in the field of metal ion treatment in wastewater, which can solve problems such as refractory degradation, difficult treatment, and ecological damage, and achieve the effects of excellent adsorption performance, reduced concentration and high stability.

Active Publication Date: 2018-10-16
ZETTA NANO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of industrialization, the discharge of industrial wastewater is increasing day by day. Industrial wastewater contains a large amount of metal ions. Metals are difficult to degrade and treat in the natural environment. Discharging them directly into natural water bodies will cause ecological damage.

Method used

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  • Nanofiber membrane material for filtering M&lt;3+&gt; in water and preparation method thereof
  • Nanofiber membrane material for filtering M&lt;3+&gt; in water and preparation method thereof
  • Nanofiber membrane material for filtering M&lt;3+&gt; in water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Fe in filtered water 3+ The preparation method of the nanofibrous membrane material, it comprises the steps:

[0022] (1) Weigh polyvinylpyrrolidone PVP and polyvinyl alcohol PVA according to the ratio of parts by weight PVP:PVA=25:4, and carry out vacuum drying, add polyvinylpyrrolidone PVP and polyvinyl alcohol PVA in the ethyl acetate organic solvent , ultrasonically stirred at 45°C until uniformly mixed, then added 6wt% of graphene oxide, ultrasonically stirred, then added 7wt% of p-phenolic fluoroborate dipyrrole L, ultrasonically stirred to mix evenly, and it was a polymer solution;

[0023] (2) The polymer solution obtained in step (1) is metered through a metering pump and enters the spinneret. As the polymer spinning solution is extruded from the spinneret hole and forms a thin stream, a spray device is used to control the fine stream at the same time. Perform high-speed airflow blowing and stretching to obtain PVP / PVA nanofibers deposited on the substrate, an...

Embodiment 2

[0025] Al in filtered water 3+ The preparation method of the nanofibrous membrane material, it comprises the steps:

[0026] (1) Weigh polyvinylpyrrolidone PVP and polyvinyl alcohol PVA according to the ratio of parts by weight PVP:PVA=25:3, and carry out vacuum drying, add polyvinylpyrrolidone PVP and polyvinyl alcohol PVA to N,N-dimethyl In the amide organic solvent, stir ultrasonically at 45°C until the mixture is uniform, then add 8wt% graphene oxide, stir ultrasonically, and then add 8wt% p-phenolic fluoroborate dipyrrole L, stir ultrasonically to make the mixture uniform, that is polymer solution;

[0027] (2) The polymer solution obtained in step (1) is metered through a metering pump and enters the spinneret. As the polymer spinning solution is extruded from the spinneret hole and forms a thin stream, a spray device is used to control the fine stream at the same time. Perform high-speed airflow blowing and stretching to obtain PVP / PVA nanofibers deposited on the subs...

Embodiment 3

[0029] A kind of Cr in filtered water 3+ The preparation method of the nanofibrous membrane material, it comprises the steps:

[0030](1) Weigh polyvinylpyrrolidone PVP and polyvinyl alcohol PVA according to the ratio of parts by weight PVP:PVA=25:2, and carry out vacuum drying, add polyvinylpyrrolidone PVP and polyvinyl alcohol PVA to N, N-dimethyl In the amide organic solvent, ultrasonically stir at 45°C until the mixture is uniform, then add 7.5wt% graphene oxide, ultrasonically stir, then add 7.1wt% p-phenolic fluoroborate dipyrrole L, ultrasonically stir to make the mixture uniform, is the polymer solution;

[0031] (2) The polymer solution obtained in step (1) is metered through a metering pump and enters the spinneret. As the polymer spinning solution is extruded from the spinneret hole and forms a thin stream, a spray device is used to control the fine stream at the same time. Perform high-speed airflow blowing and stretching to obtain PVP / PVA nanofibers deposited on...

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Abstract

The invention relates to a nanofiber membrane material for filtering M<3+> in water and a preparation method thereof. According to the preparation method, by taking graphene oxide, p-phenolic fluoroboron dipyrrole L, polyvinylpyrrolidone PVP and polyvinyl alcohol PVA as raw materials, micro-nano membrane fiber with high specific surface area and high stability is prepared by a solution jet spinning technology. By virtue of specific coordination recognition of Fe<3+>, Al<3+> and Cr<3+> by the p-phenolic fluoroboron dipyrrole L, the adsorption of the Fe<3+>, the Al<3+> and the Cr<3+> by the nanofiber membrane material is improved; the nanofiber membrane material has excellent effects of filtering and adsorbing the metal Fe<3+>, the metal Al<3+> and the metal Cr<3+> in industrial wastewater;by the preparation method, the production efficiency is high, the production cost is low, a technology is simple, and fiber diameter distribution is uniform; the nanofiber membrane material is high infiltration and adsorption efficiencies, can achieve thorough removal, and is suitable for large-scale industrial production.

Description

technical field [0001] The application relates to the field of metal ion treatment in wastewater, in particular to nanofibrous membrane materials prepared by solution spray spinning technology and its effect on M in wastewater. 3+ processing. Background technique [0002] With the rapid development of industrialization, the discharge of industrial wastewater is increasing day by day. Industrial wastewater contains a large amount of metal ions. Metals are difficult to degrade and treat in the natural environment. Discharging them directly into natural water bodies will cause ecological damage. When industrial wastewater is discharged, it is imperative to filter the metal ions in it before discharging to reduce its subsequent pollution. Common methods for removing metal ions in aqueous solution include chemical method, ion resin exchange method, electrolysis method, adsorption method, reverse osmosis method, electrodialysis method, biological method, evaporation concentration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/38B01D71/44B01D61/02C02F1/28C02F1/44C02F101/20C02F101/22
CPCB01D61/027B01D71/38B01D71/44B01D2325/12C02F1/283C02F1/285C02F1/442C02F2101/203C02F2101/22
Inventor 兰清泉
Owner ZETTA NANO TECH CO LTD
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