Adsorption resin for removing perfluorinated pollutants in water body and its preparation and application

A technology for adsorbing resins and pollutants, applied in the field of macroporous adsorption resins and their preparation, to achieve the effect of saving industrial application costs

Active Publication Date: 2021-08-27
SUNRESIN NEW MATERIALS CO LTD GAOLING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problem that the existing adsorption materials such as cellulose, activated carbon or anion exchange resin cannot handle the harmful substances of perfluorooctanoic acid in water well, and provides a macroporous adsorption resin with high adsorption precision, large adsorption capacity and long service life The preparation method of the macroporous adsorption resin can effectively remove perfluorinated compound pollutants in drinking water

Method used

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  • Adsorption resin for removing perfluorinated pollutants in water body and its preparation and application

Examples

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Effect test

Embodiment 1

[0017] A preparation method for effectively removing perfluorinated pollutant adsorption resin in water bodies, the specific steps are as follows:

[0018] Step one suspension polymerization:

[0019] Accurately weigh 500 grams of deionized water and 4 grams of polyvinyl alcohol in the reactor according to the water phase formula, raise the temperature to 40-50 ° C, start stirring to mix all the raw materials evenly; accurately weigh in a beaker according to the oil phase formula: Divinylbenzene 100 grams, toluene 120 grams, benzoyl peroxide 1 gram, mix well;

[0020] After standing the water phase for 20 minutes, slowly add the oil phase; adjust the stirring speed so that the size of the oil droplets is distributed at 45-20 mesh; raise the temperature to 75°C, keep it warm for 3 hours, then raise the temperature to 82°C, keep it warm for 4 hours, then raise the temperature to 87°C, Keep warm for 4 hours, and the reaction is terminated;

[0021] After suction filtration, boi...

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Abstract

The invention discloses an adsorption resin for removing perfluorinated pollutants in water bodies, as well as its preparation and application. The purpose is to solve the problems of traditional adsorption materials, such as activated carbon materials, which have poor removal effect on perfluorooctanoic acid in water and cannot be regenerated. This method adopts styrene and divinylbenzene as skeleton materials, selects suitable porogen and dispersant to prepare macroporous resin with moderate pore size, uses p-dichlorobenzyl (XDC) as post-crosslinking agent, and generates alkanes under low steric hindrance. Based reaction, the rigid benzene ring structure is introduced into the resin through post-crosslinking, further increasing the hydrophobicity of the resin, increasing the degree of crosslinking, adjusting the microporous structure, and obtaining an adsorption resin with narrow particle size distribution, uniform pore size and high specific surface area. The mesopore size is close to the molecular size of perfluorooctanoate in water, and it has a strong ability to screen adsorbates, which can further increase the adsorption rate of perfluorinated compounds.

Description

technical field [0001] The present invention relates to a kind of macroporous adsorption resin and its preparation method. More specifically, the present invention relates to a kind of macroporous adsorption resin and its preparation method for removing perfluorinated pollutants in water bodies, belonging to functional polymer materials and environmental protection. field. Background technique [0002] As the final degradation product of perfluorinated compounds, perfluorooctane sulfonate (Perluorooctane Sulfonate) contains multiple fluorocarbon long chains, sulfonic acid, carboxylic acid and other groups in its structure, resulting in its hydrophobic and oleophobic properties. Due to the strong polarity of the C-F bond, PFOS is one of the most difficult to decompose organic pollutants. Due to the harm of PFOS to the environment and human body, the production of related products has been gradually terminated around the world. [0003] Patents CN102489260B, CN102500338B, CN...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F112/36C08J3/24C08J9/28C08L25/02C08K5/03B01J20/26B01J20/30C02F1/28C02F101/14C02F101/36
CPCC08F112/36C08J3/24C08J9/28B01J20/267C02F1/285C08J2325/02C08K5/03C02F2101/14C02F2101/36C08J2201/026C08J2325/08C08J2201/0544B01J20/28078B01J20/28057B01J20/28004B01J20/3064B01J20/3085C08L25/02C08F112/08
Inventor 张力李延军刘琼寇晓康
Owner SUNRESIN NEW MATERIALS CO LTD GAOLING
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