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Amidoxime functional feather fiber adsorption material as well as preparation method and application thereof

A feather fiber and amidoxime-based technology is applied in the field of preparation of seawater uranium extraction adsorption materials, which can solve the problems of difficult practical application operation, complex preparation process, and low adsorption efficiency, and achieve low raw material prices, simple application and recovery operations, and The effect of reducing operating costs

Pending Publication Date: 2021-11-02
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of adsorption materials for extracting uranium from seawater is complex on the one hand, the material preparation process is high, the raw material price is high, the practical application operation is difficult, the adsorption efficiency is low, and the selectivity is low.

Method used

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  • Amidoxime functional feather fiber adsorption material as well as preparation method and application thereof
  • Amidoxime functional feather fiber adsorption material as well as preparation method and application thereof
  • Amidoxime functional feather fiber adsorption material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A kind of preparation method of amidoxime functionalized feather fiber adsorption material is as follows:

[0040] First, the waste feather fibers are sorted to remove impurities, and then the feather fibers are preliminarily washed with 1:40 water. After washing, a degreasing agent is added to degrease the feather fibers. Removes residual degreaser from feather fibers. Add 5 g of washed feather fibers and 100 mL of sodium carbonate solution (w / w=10%) into a 250 mL flask, and soak for 15 min at room temperature to expose the active hydroxyl groups in the feather fibers and deprotonate them under alkaline conditions. Then 10 mL of acrylonitrile was added and reacted at 40° C. for 3 h. Then, unreacted acrylonitrile is removed with 50% ethanol aqueous solution, and finally the obtained feather fiber is washed with water, and dried to constant weight at 40° C. to obtain cyano functionalized feather fiber. Add 5 g of cyano-functionalized feather fiber to 160 mL of hydroxyl...

Embodiment 2

[0042] A kind of preparation method of amidoxime functionalized feather fiber adsorption material is as follows:

[0043] First, the waste feather fibers are sorted to remove impurities, and then the feather fibers are preliminarily washed with 1:40 water. After washing, a degreasing agent is added to degrease the feather fibers. Removes residual degreaser from feather fibers. Add 5 g of washed feather fibers and 100 mL of sodium carbonate solution (w / w=5%) into a 250 mL flask, and soak for 30 min at room temperature to expose the active hydroxyl groups in the feather fibers and deprotonate them under alkaline conditions. Then 5 mL of acrylonitrile was added and reacted at 50° C. for 2 h. Then, unreacted acrylonitrile is removed with 50% ethanol aqueous solution, and finally the obtained feather fiber is washed with water, and dried to constant weight at 40° C. to obtain cyano functionalized feather fiber. Add 5 g of cyano-functionalized feather fiber to 100 mL of hydroxylam...

Embodiment 3

[0045] A kind of preparation method of amidoxime functionalized feather fiber adsorption material is as follows:

[0046] First, the waste feather fibers are sorted to remove impurities, and then the feather fibers are preliminarily washed with 1:40 water. After washing, a degreasing agent is added to degrease the feather fibers. Removes residual degreaser from feather fibers. Add 5 g of washed feather fibers and 100 mL of sodium carbonate solution (w / w=20%) into a 250 mL flask and soak for 20 min at room temperature to expose the active hydroxyl groups in the feather fibers and deprotonate them under alkaline conditions. Then 8 mL of acrylonitrile was added and reacted at 30° C. for 4 h. Then, unreacted acrylonitrile is removed with 50% ethanol aqueous solution, and finally the obtained feather fiber is washed with water, and dried to constant weight at 40° C. to obtain cyano functionalized feather fiber. Add 5 g of cyano-functionalized feather fiber to 200 mL of hydroxylam...

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Abstract

The invention discloses an amidoxime functional feather fiber adsorption material as well as a preparation method and application thereof, and belongs to the technical field of preparation of adsorption materials for extracting uranium from seawater. The preparation method comprises the following steps: by taking feather fibers as a base material, firstly carrying out cyano group grafting modification on the feather fibers, and then modifying cyano groups into amidoxime groups under the action of hydroxylamine, thereby preparing the amidoxime group functionalized feather fiber adsorption material. The amidoxime functional feather fiber adsorption material which is high in adsorption performance, high in selectivity and simple in application method is prepared through the preparation method low in process cost. Therefore, the amidoxime group functionalized feather fiber adsorption material can be applied to an adsorption material for extracting uranium from seawater.

Description

technical field [0001] The invention belongs to the technical field of preparation of adsorption materials for extracting uranium from seawater, and relates to an amidoxime-based functionalized feather fiber adsorption material and its preparation method and application. Background technique [0002] Traditional fossil fuels such as coal and petroleum occupy a dominant position in the energy consumption structure of modern humans. However, the formation of fossil fuels requires a long carbonization process. They are non-renewable energy sources, and their supply is decreasing with time. Energy security is threatened. At the same time, the combustion of fossil fuels will produce greenhouse gases and pollute the environment. Therefore, all countries in the world are actively developing new energy sources. As a mature technology, nuclear energy can provide a large amount of electric energy without producing greenhouse gases, and it is a relatively clean new energy source. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C22B60/02C22B7/00C02F103/08
CPCB01J20/24C02F1/286C22B60/0265C22B7/006C02F2101/006C02F2103/08Y02P10/20
Inventor 强涛涛蒲亚东
Owner SHAANXI UNIV OF SCI & TECH
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