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Preparation method and application of iminodiacetic acid functionalized magnetic adsorption material

A magnetic adsorption material, iminodiacetic acid technology, applied in chemical instruments and methods, adsorption water/sewage treatment, inorganic chemistry, etc., can solve the problems of difficult recycling, limited research application, unstable adsorption, etc., and achieve adsorption effect. Stable, large specific surface area, easy to recycle

Inactive Publication Date: 2021-03-19
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional adsorbents have problems such as low adsorption capacity, unstable adsorption and difficult recycling, which limit their further research and application.

Method used

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  • Preparation method and application of iminodiacetic acid functionalized magnetic adsorption material
  • Preparation method and application of iminodiacetic acid functionalized magnetic adsorption material
  • Preparation method and application of iminodiacetic acid functionalized magnetic adsorption material

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Embodiment 1

[0033] Embodiment 1 of the present invention provides a preparation method of iminodiacetic acid functionalized magnetic adsorption material, comprising the following steps:

[0034] Step S101, weighing 2.7gFeCl 3 ·6H 2 O was dissolved in 125mL of ethylene glycol, and 7.2g of sodium acetate (NaAc) was added after it was completely dissolved. After ultrasonication for 20min, the mixed solution was poured into a polytetrafluoroethylene reactor, and reacted at 200°C for 8h; The boron magnet adsorbs the solid product from the solution. After washing, put the solid product in a vacuum drying oven and dry it at 60°C for 2 hours to obtain the magnetic Fe 3 o 4 powder;

[0035] Step S102, weighing 150mg of magnetic Fe 3 o 4 Put the powder in a 250mL beaker, add 120mL of absolute ethanol and 30mL of deionized water, ultrasonically disperse for 30min, add 1.5mL of concentrated ammonia water with a concentration of 22% to 25% during the stirring process, and then add 250μL tetraethy...

Embodiment 2

[0049] Embodiment 2 of the present invention provides a kind of preparation method of iminodiacetic acid functionalized magnetic adsorption material, comprising the following steps:

[0050] Step S101, weighing 2.7gFeCl 3 ·6H 2 O was dissolved in 125mL of ethylene glycol, and 7.2g of sodium acetate was added after it was completely dissolved. After ultrasonication for 20min, the mixed solution was poured into a polytetrafluoroethylene reactor, and reacted at 210°C for 7h; after the reaction was completed, the NdFeB magnet was used to The solid product is adsorbed from the solution, and after washing, the solid product is put into a vacuum drying oven and dried at 60°C for 2 hours to obtain a magnetic Fe 3 o 4 powder;

[0051] Step S102, weighing 150mg of magnetic Fe 3 o 4 Put the powder in a 250mL beaker, add 119mL of absolute ethanol and 29mL of deionized water, and ultrasonically disperse for 30 minutes; add 1.5mL of concentrated ammonia water with a concentration of 22...

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Abstract

The invention provides a preparation method of an iminodiacetic acid functionalized magnetic adsorption material, which comprises the following steps: weighing ferric chloride, dissolving the ferric chloride in ethylene glycol, after complete dissolving, adding sodium acetate, carrying out ultrasonic treatment, carrying out heating reaction to obtain a solid product, and conducting washing and drying to obtain magnetic Fe3O4 powder; adding absolute ethyl alcohol and deionized water into the magnetic Fe3O4 powder, conducting ultrasonical dispersing, adding concentrated ammonia water, then adding tetraethyl orthosilicate, repeatedly adding tetraethyl orthosilicate for multiple times, and conducting reacting at room temperature to obtain a Fe3O4-coated SiO2 material; dispersing the Fe3O4-coated SiO2 material into absolute ethyl alcohol, adding concentrated ammonia water and 3-aminopropyl triethoxysilane, and conducting reacting at room temperature to obtain aminated magnetic beads; and weighing sodium chloroacetate, dissolving the sodium chloroacetate in deionized water and absolute ethyl alcohol to obtain an ethanol solution of sodium chloroacetate, adding aminated magnetic beads into the ethanol solution of sodium chloroacetate, adding an acid-binding agent, and carrying out a heating reaction to obtain the iminodiacetic acid functionalized magnetic adsorption material. The adsorption material provided by the invention is good in adsorbing effect.

Description

technical field [0001] The invention relates to the technical field of heavy metal wastewater treatment, in particular to a preparation method and application of an iminodiacetic acid functionalized magnetic adsorption material. Background technique [0002] Cadmium is one of the most toxic heavy metals, posing a huge threat to human health and the environment. Because cadmium is refractory and bioaccumulative, once discharged into the environment, it will accumulate in the organism, affecting the normal metabolism of organisms and leading to various diseases. It is of great significance to develop cost-effective and efficient methods for the treatment of cadmium-containing wastewater. Among them, the adsorption method has the advantages of simple equipment, wide source of materials and high processing efficiency, and has become a research hotspot at present. However, traditional adsorbents have problems such as low adsorption capacity, unstable adsorption, and difficult r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/0229B01J20/103B01J20/22B01J20/28009C02F1/28C02F2101/20C02F2303/16
Inventor 罗泽娇苏文渊祁士华
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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