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A preparation method of bismuth-based collagen fibers for efficiently capturing iodine vapor

A technology of collagen fibers and fibrils, which is applied in the field of preparation of bismuth-based collagen fibers to efficiently capture iodine vapor, can solve the problems of high practical application cost, complicated preparation process, and low recycling rate, and achieve low price and simple preparation process , The effect of easily 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 efficiency, 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 bismuth-based collagen fibers for efficiently capturing iodine vapor
  • A preparation method of bismuth-based collagen fibers for efficiently capturing iodine vapor
  • A preparation method of bismuth-based collagen fibers for efficiently capturing iodine vapor

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Effect test

Embodiment 1

[0039] A preparation method for a bismuth-based collagen fiber efficiently capturing iodine vapor material, characterized in that it comprises the following steps:

[0040] Step 1. After cleaning, alkali treatment, dehydration and other treatments according to the conventional method, the untanned animal skin is crushed by a pulverizer to obtain granular collagen fibers with a particle size of 40 mesh, added to deionized water, and ultrasonically cleaned in an ultrasonic cleaner. Wash for 5 hours until neutral, filter and dry in an oven; the temperature of ultrasonic cleaning and vacuum drying oven is controlled at 40°C;

[0041] Step 2: Grind the cleaned 5g collagen fibers into 60 meshes in a pulverizer, add 500mL deionized water, add sodium hydroxide to adjust the pH of the solution to 9; wash with deionized water after ultrasonication for 2 hours, filter and place in a vacuum oven drying spare;

[0042] Step 3, get bismuth nitrate pentahydrate and add deionized water, and ...

Embodiment 2

[0046] A preparation method for a bismuth-based collagen fiber efficiently capturing iodine vapor material, characterized in that it comprises the following steps:

[0047] Step 1. After cleaning, alkali treatment, dehydration and other treatments according to the conventional method, the untanned animal skin is crushed by a pulverizer to obtain granular collagen fibers with a particle size of 40 mesh, added to deionized water, and ultrasonically cleaned in an ultrasonic cleaner. Wash for 5 hours until neutral, filter and dry in an oven; the temperature of ultrasonic cleaning and vacuum drying oven is controlled at 40°C;

[0048] Step 2: Grind the cleaned 5g of collagen fibers into 60 meshes in a pulverizer, add 500mL of deionized water, and add sodium hydroxide to adjust the pH of the solution to 10; after ultrasonication for 2 hours, wash with deionized water, filter and place in a vacuum oven drying spare;

[0049] Step 3, get bismuth nitrate pentahydrate and add deionized...

Embodiment 3

[0053] A preparation method for a bismuth-based collagen fiber efficiently capturing iodine vapor material, characterized in that it comprises the following steps:

[0054] Step 1. After cleaning, alkali treatment, dehydration and other treatments according to conventional methods, the untanned animal skin is crushed by a pulverizer to obtain granular collagen fibers with a particle size of 60 mesh, added to deionized water, and ultrasonically cleaned in an ultrasonic cleaner. Wash for 5 hours until neutral, filter and dry in an oven; ultrasonic cleaning temperature and vacuum drying oven temperature are controlled at 60°C;

[0055] Step 2. Grind the cleaned 5g collagen fibers into 60 meshes in a pulverizer, add 500mL of deionized water, add sodium hydroxide to adjust the pH of the solution to 10; wash with deionized water after ultrasonication for 2 hours, filter and place in a vacuum oven dry in medium;

[0056] Step 3, get bismuth nitrate pentahydrate and add deionized wat...

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Abstract

The invention discloses a method for preparing a material for efficiently capturing iodine vapor by bismuth-based collagen fibers, which comprises the following steps: adding collagen fibers to water, ultrasonically cleaning, washing until neutral, filtering and drying in an oven; After crushing in a pulverizer, add water, add alkali to adjust the pH of the solution; wash with water after ultrasonication, filter and dry in a vacuum oven for later use; take bismuth nitrate pentahydrate and add it to water, add ethylene glycol and dilute nitric acid solution, and ultrasonically obtain nitric acid Bismuth mixture; collagen fibers are added to bismuth nitrate mixture, ultrasonicated, filtered and dried in a vacuum oven; collagen fibers are added to a tube furnace for calcination, and cooled to obtain bismuth-based collagen fibers that can efficiently capture iodine vapor; bismuth The ions are bound to the collagen fibers, showing that the collagen fibers are covered with a layer of granular material, which is not easy to absorb water and agglomerate, and has stable properties. and processing.

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 bismuth-based collagen fibers for efficiently capturing iodine vapor materials. Background technique [0002] With the rapid development of the tanning industry, but the utilization rate of raw animal skin is low, a large amount of leather waste is produced in my country every year, and most of the waste is difficult to reuse, which not only causes waste of raw material resources, but also has a serious impact on the environment. pollution. How to realize the reuse of leather waste resources has always been a hot issue concerned by researchers. Studies have shown that leather waste can be transformed into collagen fibers with strong hydrophilicity after cleaning, alkali treatment, dehydration and other treatments according to convention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01D53/02B01J20/30
CPCB01J20/24B01J20/28023B01D53/02
Inventor 周建朱辉
Owner SOUTHWEAT UNIV OF SCI & TECH
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