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Adsorption resin for removing perfluorinated pollutants in water body as well as preparation and application of adsorption resin

A technology for adsorbing resin and pollutants, which is applied in the field of macroporous adsorbent resin and its preparation to achieve the effects of improving adsorption efficiency and capacity, increasing specific surface area, and improving use effect and application field.

Active Publication Date: 2020-05-19
SUNRESIN NEW MATERIALS CO LTD GAOLING
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

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 as well as preparation and application of adsorption resin

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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 a water body as well as preparation and application of the adsorption resin, and aims to solve the problems of poor removal effect on perfluorooctanoic acid in water, no regeneration and the like of the traditional adsorption material, such as an activated carbon material. According to the method, styrene and divinylbenzene are used as framework materials; a proper pore-foaming agent and a proper dispersing agent are selected to prepare macroporous resin with moderate pore diameter; p-xylylene dichloride (XDC) is used as a post-crosslinking agent; alkylation reaction is carried out under low steric hindrance; a rigid benzene ring structure is introduced into the resin through post-crosslinking; the hydrophobicity of the resin is further improved, the crosslinking degree is improved, the micropore structure is adjusted, the adsorption resin with narrow particle size distribution, uniform pore size andhigh specific surface area is obtained, the micropore size in the resin is close to the molecular size of perfluorooctanoate in water, the adsorbate screening capacity is high, and the adsorption rateof perfluorinated compounds can be further increased.

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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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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