A preparation method of high-efficiency iodine vapor capture collagen fiber airgel material

A collagen fiber and iodine vapor technology is applied in the field of high-efficiency capture of iodine vapor collagen fiber aerogel materials, which can solve the problems of high practical application cost, complicated preparation process, low recycling rate, etc. Simple process and high recycling rate

Active Publication Date: 2022-03-04
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main adsorption materials for radioactive gaseous iodine are zeolite and activated carbon, but the factors such as difficult treatment, low recycling rate and high practical application cost limit their wide application.
In recent years, adsorption materials such as COFS, MOFS, POPs, CMPs and aerogels have performed well, with large specific surface area and rich microporous structure, and have strong adsorption effect on gaseous iodine, but due to the complicated preparation process and high preparation cost , low stability and difficult to deal with later, which limit the practical application

Method used

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  • A preparation method of high-efficiency iodine vapor capture collagen fiber airgel material
  • A preparation method of high-efficiency iodine vapor capture collagen fiber airgel material
  • A preparation method of high-efficiency iodine vapor capture collagen fiber airgel material

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Effect test

Embodiment 1

[0041] A preparation method for efficiently capturing iodine vapor collagen fiber airgel material, comprising the following steps:

[0042]Step 1. After cleaning, alkali treatment, dehydration and other treatments according to the conventional method, the untanned animal skin is pulverized by a pulverizer to obtain granular collagen fibers with a particle size of 40 mesh, added to deionized water, and cleaned in an ultrasonic cleaner. Ultrasonic cleaning for 5 hours, washing to neutrality, drying in an oven after filtration; wherein the ultrasonic cleaning temperature and oven temperature are controlled at 40°C;

[0043] Step 2, pulverize the cleaned collagen fibers in a pulverizer with a particle size of 60 mesh; take 5 g of collagen fibers and add them to 500 mL of deionized water, and then add 5 g of potassium hydroxide solution with a mass fraction of 5% to mix and stir to obtain a mixture suspension;

[0044] Step 3. Transfer the suspension into a polytetrafluoroethylene...

Embodiment 2

[0047] A preparation method for efficiently capturing iodine vapor collagen fiber airgel material, comprising the following steps:

[0048] Step 1. After cleaning, alkali treatment, dehydration and other treatments according to the conventional method, the untanned animal skin is pulverized by a pulverizer to obtain granular collagen fibers with a particle size of 40 mesh, added to deionized water, and cleaned in an ultrasonic cleaner. Ultrasonic cleaning for 5 hours, washing to neutrality, drying in an oven after filtration; wherein the ultrasonic cleaning temperature and oven temperature are controlled at 50°C;

[0049] Step 2, pulverize the cleaned collagen fibers in a pulverizer, and the particle size is 60 mesh; take 5g of collagen fibers and add them to 500mL deionized water, then add 10g of ammonium hydroxide solution with a mass fraction of 5%, mix, stir, and obtain a mixture suspension;

[0050] Step 3, transfer the suspension into a polytetrafluoroethylene hydrother...

Embodiment 3

[0053] A preparation method for efficiently capturing iodine vapor collagen fiber airgel material, comprising the following steps:

[0054] Step 1. After cleaning, alkali treatment, dehydration and other treatments according to the conventional method, the untanned animal skin is pulverized by a pulverizer to obtain granular collagen fibers with a particle size of 40 mesh, added to deionized water, and cleaned in an ultrasonic cleaner. Ultrasonic cleaning for 5 hours, washing to neutrality, drying in an oven after filtration; wherein the ultrasonic cleaning temperature and oven temperature are controlled at 55°C;

[0055] Step 2, pulverize the cleaned collagen fibers in a pulverizer with a particle size of 60 mesh; take 5 g of collagen fibers and add them to 500 mL of deionized water, and then add 20 g of a mixed solution of ammonium hydroxide and sodium hydroxide with a mass fraction of 5% Mix and stir to obtain a suspension; the mass ratio of the ammonium hydroxide and sodiu...

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Abstract

The invention discloses a preparation method of a collagen fiber airgel material that efficiently captures iodine vapor, comprising: adding the collagen fiber into water, ultrasonic cleaning, washing until neutral, drying after filtering; putting the cleaned collagen fiber in a pulverizer Grinding in medium, adding collagen fibers into water, and then adding alkali modifier solution to mix to obtain a suspension; move the suspension into a polytetrafluoroethylene hydrothermal reaction kettle for hydrothermal reaction, cool, rinse until neutral, After filtering, dry in an oven; soak the dried product in glutaraldehyde solution, and after solidifying in a constant temperature shaking box for a certain period of time, rinse it repeatedly with deionized water and absolute ethanol for 3-5 times; rinse the product in deionized water until After neutralization, freeze in a low-temperature refrigerator, and then dry in a vacuum low-temperature freeze dryer to obtain a collagen fiber airgel material that efficiently captures iodine vapor. The preparation process of the present invention is simple, low in cost, green and environment-friendly, and avoids secondary pollution to the environment during the preparation process.

Description

technical field [0001] The invention belongs to the field of environmental protection in which biomass waste resources are used for adsorption of radioactive iodine vapor in the environment, and specifically relates to a preparation method of a collagen fiber airgel material for efficiently capturing iodine vapor. Background technique [0002] With the rise of the tanning industry, the leather market demand is greater, but the utilization rate of the raw material animal skin in the tanning process is not high, resulting in a large amount of waste of leather raw materials, especially the waste with small particle size is difficult to reuse, and at the same time It also causes serious pollution to the environment. How to realize the reuse of leather waste resources has always been a hot issue for researchers. Studies have shown that leather waste can be transformed into collagen fibers with strong hydrophilicity after cleaning, alkali treatment, dehydration and other treatmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01J13/00B01D53/02B01J20/30
CPCB01J13/0091B01J20/24B01J20/28047B01J20/28023B01D53/02Y02C20/40
Inventor 周建朱辉
Owner SOUTHWEAT UNIV OF SCI & TECH
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