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Chitosan-polyacrylamide magnetic composite microsphere material, preparation method and application thereof

A technology of magnetic composite microspheres and polyacrylamide, which is applied in the fields of magnetism of inorganic materials, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem that chitosan is not easy to be separated quickly, achieve short synthesis time, Good flocculation and cost reduction effect

Inactive Publication Date: 2010-11-10
杨琥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to further improve the performance of chitosan magnetic microspheres and overcome the disadvantage of chitosan not being easily separated from water, it is necessary to find a new polymer material as the shell, which not only has the adsorption and complexation properties of chitosan function, also has the function of easy separation, and becomes a high-efficiency water treatment agent with good magnetic separation effect

Method used

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  • Chitosan-polyacrylamide magnetic composite microsphere material, preparation method and application thereof
  • Chitosan-polyacrylamide magnetic composite microsphere material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Chitosan and PAM (weight ratio: 2:1) were mixed and dissolved in 1% acetic acid aqueous solution to prepare a 3% solution. After the solution was uniform, the magnetic particles Fe 3 o 4 (particle size 0.5±0.2 μm) is dispersed in the above polymer solution by ultrasound (magnetic particles account for 10% of the weight of the polymer material), and liquid paraffin is added (the volume ratio of liquid paraffin to the above mixed solution is 1.5:1) to adjust the pH After the value is 10, add glutaraldehyde aqueous solution (glutaraldehyde accounts for 1% of the weight of the polymer material), and cross-link for 2 hours at 35° C. to obtain the chitosan-PAM magnetic composite microsphere sample.

[0038] The microsphere is used as a water treatment agent, methyl orange is used as a simulated dye sewage, and the situation of removing methyl orange impurities in the above-mentioned water body is measured by a spectrophotometer (wavelength: 464nm). Such as figure 1 , figur...

Embodiment 2

[0040] Chitosan-PAM graft copolymer (grafting rate: 1.2) was dissolved in 1% acetic acid aqueous solution, was formulated into a 3% solution, and after the solution was uniform, the magnetic particle Fe 3 o 4(particle size 0.05±0.02μm) is dispersed in the above polymer solution by ultrasonic (magnetic particles account for 10% of the weight of the polymer material), add liquid paraffin (the volume ratio of liquid paraffin to the above mixed solution is 1.5:1), adjust the pH After the value is 9, add glutaraldehyde aqueous solution (glutaraldehyde accounts for 3% by weight of the polymer material), and cross-link at 45° C. for 2 hours to obtain the chitosan-PAM magnetic composite microsphere sample.

[0041] The microsphere is used as a water treatment agent, methyl orange is used as a simulated dye sewage, and the situation of removing the methyl orange impurity in the above-mentioned water body is measured by a spectrophotometer (wavelength: 464nm), and the removal rate reach...

Embodiment 3

[0043] Dissolve chitosan and PAM in 1% acetic acid aqueous solution with a mass mixing ratio of 1:4 to prepare a solution with a total concentration of 3%. After the solution is uniform, the magnetic particles Fe 3 o 4 (particle size 5 ± 2 μm) is dispersed in the above polymer solution by ultrasonic (magnetic particles account for 20% of the weight of the polymer material), add liquid paraffin (the volume ratio of liquid paraffin to the above mixed solution is 1.5: 1), adjust the pH value After 10 hours, add glutaraldehyde aqueous solution (glutaraldehyde accounts for 0.1% of macromolecular material weight), cross-linked at 35 ℃ for 2 hours, namely obtains chitosan-PAM magnetic composite microsphere sample (PAM accounts for the total weight of macromolecular material). 80% of the weight).

[0044] The microspheres are used as a water treatment agent to contain Cu 2+ In order to simulate sewage, by atomic absorption spectrometry, it is determined that it removes Cu in the abo...

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Abstract

The invention provides a magnetic composite microsphere material, which takes a chitosan-polyacrylamide complex as a packaging material and takes a magnetic material as a nuclear body. The magnetic composite microsphere material is prepared by adopting a reversed-phase suspension cross-linking method, can effectively eliminate hazardous materials in a water body by effects of adsorption, complexation and the like, can also be effectively separated from the water body and recycled by a magnetic separation technique, can be used as a water treatment agent, integrates multiple functions of good flocculation, metal ion absorption, deodorization, decolorization, effective reduction of a COD value and the like, has certain universality, and is applicable to waste water of all enterprises for printing and dyeing, electroplating and the like.

Description

technical field [0001] The invention relates to a water treatment agent, in particular to a magnetic composite microsphere material with a composite macromolecular material as a wrapping material and a magnetic material as a core, its preparation method and its application. Background technique [0002] Water is the most basic need for human survival. However, with the rapid development of industry, the problem of water pollution has become increasingly prominent. At the same time, the continuous improvement of people's material living standards has also put forward higher requirements for water quality. As far as the current water pollution characteristics are concerned, soluble organic substances and refractory biodegradable compounds in water are increasing year by year, but the current conventional water treatment methods are not effective in removing this type of pollutants. The production of secondary pollutants harmful to the environment will undoubtedly have adverse ...

Claims

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Application Information

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IPC IPC(8): H01F1/26H01F1/36B22F1/02C08L5/08C08L33/26C08L51/02C02F1/28C02F1/52C02F1/58
Inventor 杨琥
Owner 杨琥
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