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Hydrogel for embedding treatment and its preparation method and use

A hydrogel, deionized water technology, applied in the direction of being fixed on/in an organic carrier, can solve the problems of short life, low activity, difficult large-scale industrial application, etc., and achieves low cost, wide source, and operation. easy effect

Inactive Publication Date: 2014-01-29
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current embedded microorganisms generally have the disadvantages of low activity and short lifespan, making it difficult to achieve large-scale industrial application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Dissolve 2.0g of polyvinyl alcohol in 60ml of deionized water at 80-90°C, stir until dissolved, and after cooling to room temperature, add 5.8g of acrylamide monomer and 0.24g of N,N′-submerged Methylbisacrylamide was stirred until dissolved to obtain solution A;

[0028] (2) Add 0.5g of benzoin dimethyl ether, 2.2ml of tetramethylethylenediamine and 0.2g of potassium persulfate to the above solution A, and stir quickly to obtain the mixed solution B;

[0029] (3) Put the mixed liquid B prepared in step 2) under a UV radiation light source for 2-8 minutes to be cured to obtain a hydrogel.

[0030] The operating life of the hydrogel prepared in this example in the fluidized reactor can reach more than 2.0 years, and the hydrogel does not appear to break.

Embodiment 2

[0032] (1) Dissolve 4g of polyvinyl alcohol in 50ml of deionized water at 80-90°C, stir until dissolved, and cool to room temperature to obtain solution A1; add 13g of acrylamide monomer to 50ml of deionized water and 0.4g polyethylene glycol diacrylate, stirring and dissolving to obtain solution A2; combining solutions A1 and A1 to obtain solution A;

[0033] (2) Add 0.2 g of benzoyl peroxide to the above solution A to obtain a mixed solution C;

[0034] (3) The mixed solution C obtained in step 2) was polymerized at 70°C for 5 hours to obtain a hydrogel. The strength of the hydrogel prepared in this example can be greatly enhanced, and it can be operated in a fluidized reactor for more than 2 years.

Embodiment 3

[0036] (1) Dissolve 3.8g of polyvinyl alcohol in 60ml of deionized water at 80-90°C, stir until dissolved, and after cooling to room temperature, add 5g of acrylamide monomer and 0.6g of polyethylene glycol dimethyl Acrylic acid ester, stirred until dissolved to obtain solution A;

[0037] (2) Add 0.34 g of benzoyl peroxide to the above solution A to obtain a mixed solution C;

[0038] (3) The mixed solution C obtained in step 2) was polymerized at 75°C for 6 hours to obtain a hydrogel. The strength of the hydrogel prepared in this example can be greatly enhanced, and it can be operated in a fluidized reactor for more than 1.8 years.

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PUM

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Abstract

The invention relates to hydrogel for embedding treatment and its preparation method and use. The hydrogel has the advantages of high strength and long usage period, can be operated in a fluidized reactor for more than 2 years, can be prepared by mild processes, and can keep above 90% of activity of microbes embedded in the hydrogel. The preparation method utilizes raw materials having wide sources, has a low cost, can be carried out at a normal temperature in the presence of oxygen, and is convenient for operation. The hydrogel can be widely used for embedding of a plurality of microbes, enzymes, proteins and non-microbe substances and can be used for large-scale industrial preparation.

Description

technical field [0001] The invention belongs to the field of immobilized organisms, and in particular relates to a hydrogel suitable for embedding treatment and its preparation method and application. Background technique [0002] Immobilized biotechnology is a new technology developed in the 1960s. It uses chemical or physical means and methods to locate free cells or enzymes in a specific space and retain their inherent catalytic activity. And can be repeated and continuous use of modern bioengineering technology. [0003] Immobilized embedding technology has the advantages of high density of embedded microorganisms, strong resistance to external environmental impact, simple solid-liquid separation, and simple operation, so it has a wide range of applications in the fields of chemical synthesis, catalysis, food, energy manufacturing, and wastewater treatment. prospect. However, the current embedded microorganisms generally have the disadvantages of low activity and short...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F222/38C08F283/06C08J3/075C08J3/24C08J3/28C08L33/26C08L29/04C12N11/08
Inventor 乔向利
Owner SHANGHAI JIAO TONG UNIV