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A magnetic chelating resin, its preparation method and its application in the purification of complex polluted water

A technology of chelating resin and magnetic resin, which is applied in the direction of water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of poor acid resistance of resin, difficulty in effective fusion of magnetic nanoparticles and reactive monomers, etc. Achieve the effects of increasing yield, solving poor removal effect, and enhancing affinity

Active Publication Date: 2019-10-29
JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the invention: the technical problem to be solved by this invention is to provide a kind of magnetic chelating resin and preparation method thereof for the deficiencies in the prior art, to solve the problems that magnetic nanoparticles and reactive monomers are difficult to effectively fuse and the acid resistance of the resin is not strong, At the same time, the magnetic chelating resin is used to effectively purify water bodies polluted by organic matter and heavy metals

Method used

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  • A magnetic chelating resin, its preparation method and its application in the purification of complex polluted water
  • A magnetic chelating resin, its preparation method and its application in the purification of complex polluted water
  • A magnetic chelating resin, its preparation method and its application in the purification of complex polluted water

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Dissolve 0.1mol of ferric chloride hexahydrate and 0.04mol of ferrous chloride tetrahydrate in 500mL of deionized water, raise the temperature to 75°C for 30min under the protection of nitrogen, and prepare magnetic nanoparticles, cool and wash;

[0035] Add 10 g of the prepared magnetic particles to 200 mL of ammonia water with a concentration of 0.16%, stir and mix evenly, add 10 g of oleic acid for modification, raise the temperature to 75 ° C for 30 min, rinse with methanol, and then mix it with 100 g of acetone. Add 20g vinyltriethoxysilane dissolved in 100g acetone to 200mL ammonia water with a concentration of 25%. After reacting at 30°C for 4 hours, add 20g methacryloxypropyltrimethylsilane dissolved in 100g acetone Oxysilane was modified again at 30°C for 4 hours, rinsed with methanol after cooling;

[0036]After mixing 14.4g of modified magnetic nanoparticles with 20g of divinylbenzene, 12g of methyl acrylate, 16g of toluene, and 0.24g of benzoyl peroxide, the...

Embodiment 2

[0043] Dissolve 0.03mol of ferric chloride hexahydrate and 0.018mol of ferrous chloride tetrahydrate in 500mL of deionized water, heat up to 85°C under the protection of nitrogen and react for 60min to prepare magnetic nanoparticles, cool and wash;

[0044] Add 3 g of the prepared magnetic particles to 200 mL of ammonia water with a concentration of 0.18%, stir and mix evenly, add 15 g of oleic acid for modification, raise the temperature to 85 ° C for 60 min, rinse with methanol, and then mix it with 100 g of acetone Add 30g vinyltriethoxysilane dissolved in 300g acetone to 200mL ammonia water with a concentration of 28%. After reacting at 50°C for 8 hours, add 30g methacryloxypropyltrimethylsilane dissolved in 300g acetone Oxysilane was modified again at 50°C for 8 hours, rinsed with methanol after cooling;

[0045] After mixing 4.8g of modified magnetic nanoparticles with 6g of divinylbenzene, 10g of methyl acrylate, 32g of toluene, and 0.48g of benzoyl peroxide, the temper...

Embodiment 3

[0052] Dissolve 0.05mol ferric chloride hexahydrate and 0.025mol ferrous chloride tetrahydrate in 500mL deionized water, heat up to 80°C under the protection of nitrogen and react for 40min to prepare magnetic nanoparticles, cool and wash;

[0053] Add 5 g of the prepared magnetic particles to 200 mL of ammonia water with a concentration of 0.17%, stir and mix evenly, add 10 g of oleic acid for modification, raise the temperature to 80 ° C for 40 min, rinse with methanol, and then mix it with 100 g of acetone Add 20g vinyltriethoxysilane dissolved in 150g acetone to 200mL ammonia water with a concentration of 25%. After reacting at 40°C for 6h, add 20g methacryloxypropyltrimethylsilane dissolved in 150g acetone Oxysilane was modified again at 40°C for 6 hours, rinsed with methanol after cooling;

[0054] After mixing 6g of modified magnetic nanoparticles with 10g of divinylbenzene, 10g of methyl acrylate, 20g of toluene, and 0.4g of benzoyl peroxide, the temperature was raised...

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Abstract

The invention relates a novel magnetic chelating resin with a high specific area. The magnetic chelating resin is mainly prepared by the following steps that 1, magnetic nanoparticles are prepared bya co-precipitation method, and oleic acid, vinyltriethoxysilane, and methacryloxy propyl trimethoxyl silane are sequentially used for modifying the surfaces of the magnetic nanoparticles; 2, a temperature-raising procedure is strictly controlled, so that suspension polymerization of the modified magnetic nanoparticles, divinylbenzene and methyl acrylate is performed; 3, post-crosslinking and a grouping reaction of the resin are performed. The magnetic chelating resin prepared has high specific saturation magnetization and higher specific area and group content, and can have a good removal effect on a compound pollution system in which organic matters and heavy metals coexist and have an excellent application prospect.

Description

technical field [0001] The invention relates to a magnetic chelating resin and a preparation method thereof, as well as its application in purifying organic matter and heavy metal compound polluted water, and belongs to the technical field of magnetic chelating resin and its preparation. Background technique [0002] There are many kinds of pollutants in the environmental water body, forming a complex pollution state in which multiple pollutants coexist. Among them, the combined pollution of organic and inorganic substances, especially the complexation of toxic organic substances and heavy metals, is an important problem in water treatment. Organic matter and heavy metals will be combined through coordination, adsorption or chemical action, changing their morphology, migration and transformation rules, and biological toxicity, often bringing higher ecological risks. [0003] Adsorption is a commonly used high-efficiency deep removal technology for toxic pollutants such as o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/32C08F212/36C08F220/14C08F2/18C08F2/44C08K9/06C08K3/22C08J3/24C02F1/28C02F101/20C02F101/30C02F101/34C02F101/36C02F101/38
CPCC02F1/285C02F1/288C02F2101/20C02F2101/30C02F2101/34C02F2101/345C02F2101/36C02F2101/38C08F2/18C08F2/44C08F8/32C08F212/36C08F220/14C08J3/24C08J2325/02C08J2333/08C08K3/22C08K9/06C08K2003/2268C08K2003/2272C08K2201/01C08K2201/011
Inventor 王未周庆朱增银张满成祁梦
Owner JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
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