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Preparation method and application of polyacrylamide-loaded magnetic chitosan adsorbent

A technology of polyacrylamide and chitosan, which is applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve problems such as difficult recycling, high cost, and poor effect, and achieve Improves adsorption performance, facilitates recovery and reuse, and has the effect of enriching raw materials

Pending Publication Date: 2021-12-21
HUATIAN ENG & TECH CORP MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned defects, the purpose of the present invention is to propose a preparation method and application of acrylamide-loaded magnetic chitosan adsorbent, to solve the technical problems of high cost, poor effect and difficult recovery in the prior art.

Method used

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  • Preparation method and application of polyacrylamide-loaded magnetic chitosan adsorbent

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Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 Shown, the preparation method of the magnetic chitosan adsorbent of a kind of polyacrylamide load, comprises the steps:

[0029] Step 1, first soak a certain quality of chitosan in a glacial acetic acid solution with a concentration of 2%, and place it in a constant temperature water bath to heat and dissolve at a temperature of 45°C for 1.5 hours, then add 0.5g of Fe 3 o 4 Nanoparticles, ultrasonic 1.5h to fully disperse, then add 10g of diethylenetriamine and citric acid to mix, and then stir quickly through a constant temperature shaking shaker to make a fully uniform reaction, set the temperature at 45°C during the process, and drop 5ml of Pentylene glycol acts as a crosslinking agent. After 1.5 hours, raise the temperature to 65°C in a water bath, and adjust the pH of the mixed solution to 9-10 with NaOH solution, and stir rapidly at a speed of 220r / min for 4 hours. After the reaction is complete, the solid product is obtained by suction filtrati...

Embodiment 2

[0032] Such as figure 1 Shown, the preparation method of the magnetic chitosan adsorbent of a kind of polyacrylamide load, comprises the steps:

[0033] Step 1, first soak a certain quality of chitosan in a glacial acetic acid solution with a concentration of 2%, and place it in a constant temperature water bath to heat and dissolve at a temperature of 45°C for 1.5 hours, then add 0.5g of Fe 3 o 4 Nanoparticles, ultrasonic 1.5h to fully disperse, then add 10g of diethylenetriamine and citric acid to mix, and then stir quickly through a constant temperature shaking shaker to make a fully uniform reaction, set the temperature at 45°C during the process, and drop 5ml of Pentylene glycol acts as a crosslinking agent. After 1.5 hours, raise the temperature to 65°C in a water bath, and adjust the pH of the mixed solution to 9-10 with NaOH solution, and stir rapidly at a speed of 220r / min for 4 hours. After the reaction is complete, the solid product is obtained by suction filtrati...

Embodiment 3

[0037] Such as figure 1 Shown, the preparation method of the magnetic chitosan adsorbent of a kind of polyacrylamide load, comprises the steps:

[0038] Step 1, first soak a certain quality of chitosan in a glacial acetic acid solution with a concentration of 2%, and place it in a constant temperature water bath to heat and dissolve at a temperature of 45°C for 1.5 hours, then add 0.5g of Fe 3 o 4 Nanoparticles, ultrasonic 1.5h to fully disperse, then add 10g of diethylenetriamine and citric acid to mix, and then stir quickly through a constant temperature shaking shaker to make a fully uniform reaction, set the temperature at 45°C during the process, and drop 5ml of Pentylene glycol acts as a crosslinking agent. After 1.5 hours, raise the temperature to 65°C in a water bath, and adjust the pH of the mixed solution to 9-10 with NaOH solution, and stir rapidly at a speed of 220r / min for 4 hours. After the reaction is complete, the solid product is obtained by suction filtration...

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Abstract

The invention provides a preparation method and application of a polyacrylamide-loaded magnetic chitosan adsorbent. The method comprises the following steps: 1) preparing a chitosan acetate solution; 2) adding Fe3O4 nano-particles into the prepared chitosan acetate solution, and fully dispersing the Fe3O4 nano-particles; (3) adding diethylenetriamine and citric acid into the solution prepared in the step (2), mixing, and dropwise adding a cross-linking agent; 4) adjusting the pH value of the solution prepared in the step 3) to 9-10; 5) performing suction filtration on the solution prepared in the step 4) to obtain a solid product; and 6) crushing the solid product, and fully stirring the crushed solid product with a polyacrylamide solution. The adsorbent disclosed by the invention is relatively excellent in adsorption efficiency and repeated regeneration capacity on Cu (II)-containing metal wastewater.

Description

technical field [0001] The invention belongs to the technical field of water environment adsorption materials, and in particular relates to a preparation method and application of a magnetic chitosan adsorbent loaded with polyacrylamide. Background technique [0002] In recent years, with the rapid development of science and technology, while bringing richness to people's material and convenience to life, a large amount of harmful pollution has inevitably been produced, and various types of complex pollution that are continuously discharged into water bodies Due to the strong flow and diffusion of water bodies, it is more difficult to treat wastewater, which will not only endanger the growth of animals and plants and human health, but also cause permanent damage to the ecological environment. Therefore, the treatment of water environment pollution It has become a problem to be solved in Ecuador, and it is urgent to carry out the necessary advanced treatment of various pollut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/261B01J20/24B01J20/06B01J20/28009C02F1/286C02F1/285C02F1/281B01J2220/4812B01J2220/4825B01J2220/4806B01J2220/46C02F2101/20
Inventor 马天刘晓辉
Owner HUATIAN ENG & TECH CORP MCC
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