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Magnetic adsorbent and preparation method thereof

A magnetic adsorbent and adsorbent technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as easy loss, high use cost, and difficult regeneration

Active Publication Date: 2021-05-14
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adsorption method has attracted much attention because of its simple operation, high treatment efficiency and reproducibility. However, most adsorbents have problems such as difficult regeneration, easy loss, and high cost of use. Therefore, a cheap, efficient, environmentally friendly and biocompatible adsorbent has been developed. biosorbents are necessary

Method used

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  • Magnetic adsorbent and preparation method thereof
  • Magnetic adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A magnetic biosorbent with high adsorption capacity and a preparation method thereof, comprising the following steps:

[0022] (1) Preparation of carboxylated Fe by solvothermal method 3 o 4 magnetic nanoparticles. Weigh 0.4 g sodium citrate, 2.70 g FeCl 3 ·6H 2 O and 7.40 g of ammonium acetate were placed in a 250 mL three-necked flask, then added to 75 mL of ethylene glycol, and ultrasonically treated for 30 min to obtain a yellow mixture solution. The three-necked flask was transferred to an oil bath, and N 2 , heated to 170 °C, and mechanically stirred at constant temperature for 1 h to obtain a reddish-brown solution. Then the solution was transferred to a reaction kettle and placed in an oven at 200 °C for 16 h. After the reaction was completed, the reactor was taken out and cooled to room temperature, the product was separated by a magnet, washed three times with ethanol and water respectively, and the washed product was vacuum-dried at 50 °C for 24 h.

[0...

Embodiment 2

[0026] A magnetic biosorbent with high adsorption capacity and a preparation method thereof, comprising the following steps:

[0027] (1) Preparation of carboxylated Fe by solvothermal method 3 o 4 magnetic nanoparticles. Weigh 0.4 g sodium citrate, 2.70 g FeCl 3 ·6H 2 O and 7.40 g of ammonium acetate were placed in a 250 mL three-necked flask, then added to 75 mL of ethylene glycol, and ultrasonically treated for 30 min to obtain a yellow mixture solution. The three-necked flask was transferred to an oil bath, and N 2 , heated to 170 °C, and mechanically stirred at constant temperature for 1 h to obtain a reddish-brown solution. Then the solution was transferred to a reaction kettle and placed in an oven at 200 °C for 16 h. After the reaction was completed, the reactor was taken out and cooled to room temperature, the product was separated by a magnet, washed three times with ethanol and water respectively, and the washed product was vacuum-dried at 50 °C for 24 h.

[0...

Embodiment 3

[0031] A magnetic biosorbent with high adsorption capacity and a preparation method thereof, comprising the following steps:

[0032] (1) Preparation of carboxylated Fe by solvothermal method 3 o 4 magnetic nanoparticles. Weigh 0.4 g sodium citrate, 2.70 g FeCl 3 ·6H 2 O and 7.40 g of ammonium acetate were placed in a 250 mL three-necked flask, then added to 75 mL of ethylene glycol, and ultrasonically treated for 30 min to obtain a yellow mixture solution. The three-necked flask was transferred to an oil bath, and N 2 , heated to 170 °C, and mechanically stirred at constant temperature for 1 h to obtain a reddish-brown solution. Then the solution was transferred to a reaction kettle and placed in an oven at 200 °C for 16 h. After the reaction was completed, the reactor was taken out and cooled to room temperature, the product was separated by a magnet, washed three times with ethanol and water respectively, and the washed product was vacuum-dried at 50 °C for 24 h.

[0...

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Abstract

The invention discloses a magnetic adsorbent and a preparation method thereof, and belongs to the field of composite materials. According to the magnetic adsorbent, the cationic property of chitosan and the amphoteric structure and property of gelatin are combined, the magnetism of ferroferric oxide and the characteristic that CTAB serves as a cationic surface active agent are introduced, and a magnetic adsorption material with efficient adsorption and regeneration functions is prepared. The preparation method is simple, the magnetic adsorbent is easy to separate from a solution and not prone to loss, the separation process is time-saving and efficient, cyclic utilization can be achieved, and the magnetic adsorbent has wide application prospects in the aspect of dye adsorption.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a magnetic adsorbent with high adsorption capacity and a preparation method thereof. Background technique [0002] With the continuous improvement of people's material life, dye-related industries such as leather, printing and dyeing, textiles and cosmetics have developed rapidly. One of the results is that the discharge of untreated dye wastewater into the water environment is harmful to aquatic organisms and human health. a huge threat. Dye wastewater interferes with the photosynthesis of aquatic organisms, causing the water body to lose its self-purification function; and its biological toxicity will cause serious harm to the human body, such as carcinogenic, teratogenic and sudden-induced. Due to the enormous toxic effects, the handling of dyes has attracted much attention. Traditional dye wastewater treatment methods mainly include biological treatment, chemi...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/30C02F101/34C02F101/38
CPCB01J20/24B01J20/28009C02F1/286C02F2101/308C02F2101/38C02F2101/40C02F2101/34
Inventor 游力军丁冠军苏柳
Owner FUZHOU UNIVERSITY
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