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Nano gelatin/polymer composite fiber belt preparation method based on seawater uranium extraction

A composite fiber and polymer technology, applied in the direction of animal fiber, fiber treatment, alkali metal compounds, etc., to achieve the effect of low cost, good hydraulic performance and simple process

Active Publication Date: 2018-11-06
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no electrospinning preparation of adsorbent materials with cured tannins on nanofibers.

Method used

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  • Nano gelatin/polymer composite fiber belt preparation method based on seawater uranium extraction
  • Nano gelatin/polymer composite fiber belt preparation method based on seawater uranium extraction
  • Nano gelatin/polymer composite fiber belt preparation method based on seawater uranium extraction

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A preparation method of nano-gelatin / polymer composite fiber tape based on the extraction of uranium from seawater, comprising the following steps:

[0037] Step 1, preparation of nano-gelatin / polymer fiber tape: take 4g of gelatin and dissolve it in 90wt% glacial acetic acid, stir magnetically at 60°C for 2h to obtain a gelatin solution with a mass fraction of 8%; weigh 5g of polyvinyl alcohol and dissolve it in Dissolve in distilled water to obtain a polyvinyl alcohol solution with a mass fraction of 5%, and then mix the two solutions evenly at a ratio of 1:9 by weight to obtain a spinning solution; extract the prepared electrospinning solution with a syringe, Fix the syringe on the electrospinning device, control the high-voltage power supply voltage to 10kv, the flow rate of the electrospinning solution to 0.3mL / h, the distance between the nozzle of the syringe needle and the collection screen to 6cm, and the spinning ambient temperature to 25 ℃, the inner diameter ...

Embodiment 2

[0040] A preparation method of nano gelatin / polymer composite fiber tape based on seawater extracting uranium, comprising the following steps:

[0041] Step 1, preparation of nano-gelatin / polymer fiber tape: take 6g of gelatin and dissolve it in 90wt% glacial acetic acid, stir magnetically at 60°C for 2h to obtain a gelatin solution with a mass fraction of 12%; weigh 8g of polyacrylamide and dissolve it in Dissolve in distilled water to obtain a polyacrylamide solution with a mass fraction of 8%, and then mix the two solutions evenly at a ratio of 2:8 by weight to obtain a spinning solution; extract the prepared electrospinning solution with a syringe, Fix the syringe on the electrospinning device, control the high-voltage power supply voltage to 15kv, the flow rate of the electrospinning solution to 0.6mL / h, the distance between the nozzle of the syringe needle and the collection screen to 8cm, and the spinning ambient temperature to 30 ℃, the inner diameter of the spinneret ...

Embodiment 3

[0044] A preparation method of nano gelatin / polymer composite fiber tape based on seawater extracting uranium, comprising the following steps:

[0045] Step 1, preparation of nano-gelatin / polymer fiber tape: take 8g of gelatin and dissolve it in 90wt% glacial acetic acid, stir magnetically at 60°C for 2h to obtain a gelatin solution with a mass fraction of 16%; weigh 10g of polyvinylpyrrolidone and dissolve it in Dissolve in distilled water to obtain a polyvinylpyrrolidone solution with a mass fraction of 10%, and then mix the two solutions uniformly in a ratio of 3:7 by weight to obtain a spinning solution; extract the prepared electrospinning solution with a syringe, Fix the syringe on the electrospinning device, control the high-voltage power supply voltage to 20kv, the flow rate of the electrospinning solution to 0.9mL / h, the distance between the nozzle of the syringe needle and the collection screen to 10cm, and the spinning ambient temperature to 35 ℃, the inner diameter...

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Abstract

The invention discloses a nano gelatin / polymer composite fiber belt preparation method based on seawater uranium extraction. The preparation method comprises following steps: step one, preparing a nano gelatin / polymer fiber belt: individually dissolving gelatin and polymers, then mixing two solutions according to a certain ratio, evenly stirring to obtain a spinning solution, carrying out electrostatic spinning, drying, and cutting to obtain the nano gelatin / polymer fiber belt; and step two, curing tannin, soaking the nano gelatin / polymer fiber belt in a tannin water solution for 1 to 10 hours, taking out the fiber belt, then transferring the fiber belt to distilled water, stirring, adding a crosslinking agent, carrying out crosslinking for 2 to 6 hours at a temperature of 20 to 50 DEG C,taking out the fiber belt, washing, and drying to obtain the nano gelatin / polymer composite fiber belt with cured tannin. The fiber belt is prepared by weaving nano level fibers; the diameter is small, the specific surface area is large, the amount of cured tannin is large; the provided fiber belt has an extremely high adsorbing performance on low concentration uranium, moreover, the hydraulic performance, floating property, and water surging performance of the fiber belt are good, and thus the fiber belt can be used to separate and enrich uranium in seawater, salt lakes, and radioactive wastewater.

Description

technical field [0001] The invention belongs to the utilization of biomass resources, and relates to the preparation of nanofiber belts by organic polymer compounds, in particular to a preparation method of nanometer gelatin / polymer composite fiber belts based on seawater extraction of uranium. Background technique [0002] The ocean is a huge storehouse of uranium. The content of uranium in seawater is as high as 4.5 billion tons, which is thousands of times that of uranium on land. In addition, the uranium isotopes in seawater are mainly uranium-238 and uranium-235, which are the same as the natural abundance in terrestrial uranium deposits. If the uranium resources in seawater can be effectively enriched, it will become an important supplement and guarantee for the stable supply of fuel for my country's nuclear power industry. The performance (selectivity and adsorption capacity) of the adsorption material used for extracting uranium from seawater is an important factor ...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30D04H1/4382D04H1/728D06M13/238
CPCB01J20/24B01J20/261B01J20/262B01J20/28023B01J2220/445B01J2220/4812B01J2220/4825D04H1/4382D04H1/728D06M13/238D06M2101/10
Inventor 林晓艳孟洁陈彦周建罗学刚
Owner SOUTHWEAT UNIV OF SCI & TECH
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