A preparation method of modified collagen fibers to efficiently capture iodine vapor material

A technology for collagen fibers and fibrils is applied in the field of preparation of modified collagen fibers to efficiently capture iodine vapor, and can solve the problems of high practical application cost, complicated preparation process, and difficulty in post-processing, avoiding pollution problems and simple preparation process. , the effect of easy degradable treatment

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

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Problems solved by technology

At present, the adsorption materials for radioactive gaseous iodine mainly include zeolite, activated carbon, COFS, MOFS, etc., which have large specific surface area and microporous structure, and have a strong adsorption effect on gaseous iodine. Due to factors such as low utilization rate, difficult post-processing, and high practical application costs, it is urgent to find an alternative adsorption material.

Method used

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  • A preparation method of modified collagen fibers to efficiently capture iodine vapor material
  • A preparation method of modified collagen fibers to efficiently capture iodine vapor material
  • A preparation method of modified collagen fibers to efficiently capture iodine vapor material

Examples

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Embodiment 1

[0043] A method for preparing a material for efficiently capturing iodine vapor by modified collagen fibers, comprising the following steps:

[0044] Step 1. After cleaning, alkali treatment, dehydration and other treatments according to conventional methods, the untanned animal skins are pulverized by a pulverizer to obtain granular collagen fibers with a particle size of 50 mesh, added to deionized water, and cleaned in an ultrasonic cleaning machine. 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;

[0045] Step 2, pulverize the cleaned collagen fibers in a pulverizer, and the particle size is 40 mesh; get 10g of collagen fibers and 5g of sodium hydroxide solid alkali modifier to grind and mix evenly, and put them in a tube furnace where the ambient gas is nitrogen. Calcined at 150°C for 2h, then cooled to room temperature;

[0046]Step 3: Rin...

Embodiment 2

[0048] A method for preparing a material for efficiently capturing iodine vapor by modified collagen fibers, comprising the following steps:

[0049] Step 1. After cleaning, alkali treatment, dehydration and other treatments according to conventional methods, the untanned animal skins are pulverized by a pulverizer to obtain granular collagen fibers with a particle size of 50 mesh, added to deionized water, and cleaned in an ultrasonic cleaning machine. Ultrasonic cleaning for 5 hours, washing to neutrality, drying in an oven after filtration; the ultrasonic cleaning temperature and oven temperature are controlled at 45°C;

[0050] Step 2, pulverize the cleaned collagen fiber in a pulverizer, the particle size is 60 mesh; get 10g collagen fiber and 5g potassium hydroxide solid alkali modifier to grind and mix evenly, and place in a tube furnace where the ambient gas is nitrogen. Calcined at 180°C for 5h, then cooled to room temperature;

[0051] Step 3. Rinse the calcined mat...

Embodiment 3

[0053] A method for preparing a material for efficiently capturing iodine vapor by modified collagen fibers, 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 60 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;

[0055] Step 2, pulverize the cleaned collagen fiber in a pulverizer, the particle size is 80 mesh; take 10g of collagen fiber and 10g of potassium hydroxide and sodium hydroxide and mix (weight ratio 1:1) Solid alkali modifier grinds and mixes evenly , calcined at 220°C for 5h in a tube furnace with nitrogen as the ambient gas, and cooled to room temperatu...

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Abstract

The invention discloses a preparation method of a modified collagen fiber material for efficiently capturing iodine vapor, which comprises the following steps: step 1, adding the collagen fiber into deionized water, ultrasonic cleaning in an ultrasonic cleaning machine for 5 hours, washing until neutral, and filtering Dry in an oven; step 2, pulverize the cleaned collagen fibers in a pulverizer, mix the collagen fibers and alkali modifier in proportion, calcinate in a tube furnace at a certain temperature for a period of time, and cool to room temperature Step 3: Rinse the calcined material with deionized water to neutrality, filter and dry in an oven to obtain the modified collagen fiber material. The modified collagen fiber is not easy to absorb water and agglomerate, has a large specific surface area, and has a high adsorption capacity for iodine vapor, which is much higher than other types of biomass materials, and the utilization rate of the adsorption material is high. The preparation process of the invention is simple, 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 material for efficiently capturing iodine vapor by modified collagen fibers. Background technique [0002] The tanning industry is rising day by day in today's society, but the utilization rate of the raw material animal skin is only about 60%, and a large amount of leather waste is produced every year, especially the waste with small particle size is difficult to reuse, resulting in the waste of raw material resources, and at the same time The environment is seriously polluted. 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 t...

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
CPCB01J13/0091B01J20/24B01J20/28023B01J20/28047B01D53/02
Inventor 周建朱辉
Owner SOUTHWEAT UNIV OF SCI & TECH
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