Modified polyphenylsulfone filtering membrane applied to arsenic removal and preparation method thereof

A polyphenylsulfone and filter membrane technology, applied in the field of modified polyphenylsulfone filter membrane and its preparation, can solve problems such as unsatisfactory arsenic removal effect, and achieve the effects of excellent adsorption capacity, enhanced hydrophilicity, and improved agglomeration phenomenon

Inactive Publication Date: 2022-07-29
NANTONG NICE ENVIRONMENTAL PROTECTION SCI ANDTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can solve the problem of unsatisfactory arsenic removal effect in the existing arsenic removal technology, and achieve effective adsorption of different types of arsenic

Method used

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  • Modified polyphenylsulfone filtering membrane applied to arsenic removal and preparation method thereof
  • Modified polyphenylsulfone filtering membrane applied to arsenic removal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048]A preparation method of a modified polyphenylsulfone filter membrane applied to arsenic removal is as follows:

[0049] 1. Preparation of acyl chloride polyethylene glycol modified nano-silica loaded with zirconia

[0050] (1) In a nitrogen atmosphere, add nano-silica (15g) and toluene diisocyanate (10g) to a toluene solution (100ML), and stir at room temperature to react to obtain isocyanated nano-silica, and ultrasonically disperse until uniform; Polyethylene glycol (800 ml) was added, and the modification reaction was carried out at 100 °C for 12 h. The solvent was distilled off under reduced pressure, and the solid product was washed with distilled water and acetone to obtain polyethylene glycol-modified nano-silica; in a nitrogen atmosphere, polyethylene glycol-modified nano-silica was added to the N,N-dimethylformamide solution. Silica (100g), maleic anhydride (50g) and catalyst pyridine (5g) were esterified at 180°C for 10h. After the reaction was completed, it w...

Embodiment 2

[0057] A preparation method of a modified polyphenylsulfone filter membrane applied to arsenic removal is as follows:

[0058] 1. Preparation of acyl chloride polyethylene glycol modified nano-silica loaded with zirconia

[0059] (1) In a nitrogen atmosphere, add nano-silica (15g) and toluene diisocyanate (10g) to a toluene solution (100ML), and stir at room temperature to react to obtain isocyanated nano-silica, and ultrasonically disperse until uniform; Polyethylene glycol (800 ml) was added, and the modification reaction was carried out at 100 °C for 12 h. The solvent was distilled off under reduced pressure, and the solid product was washed with distilled water and acetone to obtain polyethylene glycol-modified nano-silica; in a nitrogen atmosphere, polyethylene glycol-modified nano-silica was added to the N,N-dimethylformamide solution. Silica (100g), maleic anhydride (50g) and catalyst pyridine (5g) were esterified at 180°C for 10h. After the reaction was completed, it ...

Embodiment 3

[0066] A preparation method of a modified polyphenylsulfone filter membrane applied to arsenic removal is as follows:

[0067] 1. Preparation of acyl chloride polyethylene glycol modified nano-silica loaded with zirconia

[0068] (1) In a nitrogen atmosphere, add nano-silica (15g) and toluene diisocyanate (10g) to a toluene solution (100ML), and stir at room temperature to react to obtain isocyanated nano-silica, and ultrasonically disperse until uniform; Polyethylene glycol (800 ml) was added, and the modification reaction was carried out at 100 °C for 12 h. The solvent was distilled off under reduced pressure, and the solid product was washed with distilled water and acetone to obtain polyethylene glycol-modified nano-silica; in a nitrogen atmosphere, polyethylene glycol-modified nano-silica was added to the N,N-dimethylformamide solution. Silica (100g), maleic anhydride (50g) and catalyst pyridine (5g) were esterified at 180°C for 10h. After the reaction was completed, it ...

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Abstract

The invention particularly discloses a preparation method of a modified polyphenyl sulfone filtering membrane applied to arsenic removal. The preparation method comprises the following steps: preparing aminated polyphenylsulfone through nitrification and ammonification reactions, preparing isocyanated nano-silica through a reaction of nano-silica and toluene diisocynate, and continuously adding polyethylene glycol to prepare polyethylene glycol modified nano-silica. The preparation method comprises the following steps: taking nano silicon dioxide as a raw material, reacting with maleic anhydride under the catalysis of pyridine to prepare carboxyl-terminated polyethylene glycol modified nano silicon dioxide, then preparing acyl chlorinated polyethylene glycol modified nano silicon dioxide through acylating chlorination reaction, and finally preparing zirconium oxide loaded nano silicon dioxide through coordination and calcination. The organic combination of the zirconium oxide-loaded silicon dioxide and the polyphenylsulfone improves the adsorbability to different types of arsenic, enhances the hydrophilicity and water flux of the polyphenylsulfone microporous membrane, further improves the permeability of the membrane material, and reduces the membrane scale deposition phenomenon.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a modified polyphenylsulfone filter membrane used for arsenic removal and a preparation method thereof. technical background [0002] Due to the rapid development of urbanization and industrialization, drinking water in the ecosystem is being polluted, and the safety of drinking water is closely related to human health. In drinking water, arsenic is a carcinogen that is a serious threat to human health and is difficult to remove from drinking water. Commonly used arsenic removal methods are coagulation, ion exchange, precipitation and adsorption, but these techniques cannot completely remove arsenic, and at the same time, these techniques are very expensive, and the adsorbents used need to be constantly replaced. [0003] Polyphenylsulfone is a multipurpose polymer for membrane preparation with good thermal stability, hydrolytic stability, heat resistance and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/10
CPCB01J20/262B01J20/103B01J20/0211B01J20/28033C02F1/285C02F2101/103
Inventor 张学成周青龙
Owner NANTONG NICE ENVIRONMENTAL PROTECTION SCI ANDTECH
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