Chelating resin adsorbing material and preparation method thereof

An adsorption material, chelating resin technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as the inability to increase adsorption capacity, achieve good treatment effect, and simple synthesis process steps.

Inactive Publication Date: 2014-12-03
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the technical problem that the adsorption capacity of existing chelating resins for heavy metal ions cannot be improved because it is completely controlled by the number of surface modification groups, the present invention provides a chelating resin adsorption material and its preparation method: prepared by suspension polymerization A copolymer of methyl acrylate and divinylbenzene, and then directly chemically modify the copolymer skeleton itself by hydroxylamine to prepare a chelating resin containing a hydroxamic acid structure

Method used

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  • Chelating resin adsorbing material and preparation method thereof
  • Chelating resin adsorbing material and preparation method thereof
  • Chelating resin adsorbing material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Prepare an emulsion with 90mL methyl acrylate, 9mL divinylbenzene, 6g gelatin, 35mL n-heptane, and 400mL distilled water. Pour the prepared 500mL emulsion into a 1000mL three-necked flask, add 1g of benzoyl peroxide, heat in a water bath at 95°C, and stir the reaction at a speed of 60r / min for 8 hours, and perform solid-liquid separation of the copolymerized spheres obtained by the reaction, and use ethanol Wash and dry under vacuum at 50°C. Take 10g of potassium hydroxide, 15g of hydroxylamine sulfate, 5mL of polyoxyethylene oleate, and 500mL of distilled water to make a solution, pour it into a 1000mL three-necked flask, add 10g of copolymerized balls, mix, and react at a stirring rate of 60r / min at 45°C After 16 hours, the product was filtered, washed with distilled water, and vacuum-dried at 50° C. to obtain a finished chelating resin adsorption material.

[0032] Its physical and chemical properties of the chelating resin adsorption material prepared by the presen...

Embodiment 2

[0036] Prepare an emulsion by mixing 90 mL of methyl acrylate, 11 mL of divinylbenzene, 6 g of polyvinyl alcohol, 40 mL of ethyl acetate, and 400 mL of distilled water. Pour 500mL of the emulsion into a 1000mL three-neck flask, add 2mL of di-tert-butyl peroxide, heat in a water bath at 94°C, and stir at a speed of 60r / min for 9 hours, then separate the copolymerized spheres from the reaction into solid and liquid, and wash with ethanol , dried under vacuum at 45°C. Take 15g of sodium hydroxide, 10g of hydroxylamine hydrochloride, 5mL of polyoxyethylene sorbitan oleate, and 500mL of distilled water to make a solution, pour it into a 1000mL three-necked flask, add 10g of copolymerized balls and mix, at 48°C at 60r / min React at a stirring rate for 15 hours, filter the product, wash it with distilled water, and dry it under vacuum at 45°C to obtain a finished product of the chelating resin adsorption material. Its physical and chemical properties of the chelating resin adsorption...

Embodiment 3

[0041] Mix 90mL methyl acrylate, 8mL divinylbenzene, 6g polyethylene wax, 30mL toluene, and 400mL distilled water to make an emulsion. Pour 500mL of the emulsion into a 1000mL three-necked flask, add 2g of azobisethylbutyronitrile, heat in a water bath at 93°C, and stir at a speed of 60r / min for 10 hours, then separate the copolymerized spheres from the reaction into solid and liquid, and wash with ethanol , dried under vacuum at 40°C. Take 12g of sodium hydroxide, 12g of hydroxylamine sulfate, 5mL of diglycerol polypropylene glycol ether, and 500mL of distilled water to make a solution, pour it into a 1000mL three-necked flask, add 10g of copolymerization balls, mix, and react at a stirring rate of 60r / min at 52°C for 14 hours, the product was filtered, washed with distilled water, and vacuum-dried at 40°C to obtain the finished product of the chelating resin adsorption material. Its physical and chemical properties of the chelating resin adsorption material prepared by the ...

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Abstract

The invention discloses a chelating resin adsorbing material and a preparation method thereof, and belongs to the field of environmental functional material synthesis and application. The chelating resin adsorbing material is prepared through suspension copolymerization and nucleophilic substitution reaction by adopting an organic monomer as a raw material; the chelating resin adsorbing material comprises a skeleton and hydroxamic acid, wherein the skeleton is formed by copolymerizing methyl acrylate and divinylbenzene, and the hydroxamic acid is formed through surface modification. The synthetic method disclosed by the invention is simple. According to the chelating resin adsorbing material, the equilibrium adsorption time of heavy metal ions, namely cadmium, nickel, lead and the like which are contained in group chelating water formed through the modification of a functional group modified on the surface of the prepared chelating resin adsorbing material and the resin skeleton, is about only 20 minutes, and the saturation adsorption capacity on the heavy metal ions, namely the cadmium, the nickel, the lead and the like, is more than or equal to 2 mmol / g.

Description

Technical field: [0001] The invention discloses an adsorption material and a preparation method thereof, more specifically a chelate resin adsorption material and a preparation method thereof, based on a chelate resin copolymerized with hydroxamic acid group-modified methyl acrylate and divinylbenzene and its preparation method. Background technique: [0002] In recent years, with the gradual improvement of national water quality standards, the restrictions on the concentration of heavy metal ions in wastewater have become more and more stringent. Efficient removal of heavy metal ions in water has become a research hotspot in the field of water pollution control. Although the existing traditional coagulation method and chemical precipitation method are mature in technology and simple in operation, a large amount of heavy metal sludge generated during the treatment process is difficult to dispose of and easily causes secondary pollution. However, electrolysis and membrane se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F212/36C08F8/30B01J20/26B01J20/30C02F1/28C02F1/62
CPCB01J20/26B01J20/30C02F1/28C02F1/62C08F8/30C08F212/36C08F220/14
Inventor 王津南程澄杨欣陈晨
Owner NANJING UNIV
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