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Polymer for uranium extraction in water and preparation method thereof

A polymer and water body technology, applied in water pollutants, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as poor universality, achieve broad market prospects, good stability, and good chelation ability Effect

Inactive Publication Date: 2017-07-18
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have good separation effects for specific separation systems, but are not universally applicable.

Method used

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Examples

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Effect test

Embodiment 1

[0028] 1. Weigh 9g of acrylamide, 1g of acrylonitrile, and 0.5g of (1-dimethylamino-allyl)-phosphonic acid, dissolve them in 30ml of deionized water, blow in nitrogen, and place the solution at 50 o Heating in a constant temperature water bath in C, then adding an initiator to the solution (the mass of the initiator is 0.7% of the total mass of the monomer, ammonium persulfate: sodium bisulfite = 1:1), and the reaction is terminated after 8-12 hours of polymerization , the product is Poly(AM / AN / DMAAPA).

[0029] 2. Weigh 2g of chitosan and dissolve it in 60ml of glacial acetic acid aqueous solution with a mass fraction of 1%, stir and dissolve thoroughly, add the previously prepared Poly (AM / AN / DMAAPA) into the chitosan solution, and place the mixture in 50 o Heat and stir in a constant temperature water bath at C, then add 0.5ml (0.5g) glutaraldehyde, and react for 8 hours. After the reaction, the precipitate in the reaction solution was separated, washed with ethanol sever...

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Abstract

The invention discloses a polymer for uranium extraction in water and a preparation method thereof. The polymer comprises acrylamide, acrylonitrile, (1-dimethylamino-allyl)-phosphonic acid, ammonium persulfate, sodium hydrogen sulfite, chitosan, glutaraldehyde and hydroxylamine hydrochloride. The preparation method of the polymer comprises the steps of firstly, preparing a polymer fragment Poly(AM / AN / DMAAPA) using the acrylamide, the acrylonitrile and the (1-dimethylamino-allyl)-phosphonic acid; secondly, preparing CTS-g-Poly(AM / AN / DMAAPA) from the Poly(AM / AN / DMAAPA) and the chitosan by glutaraldehyde cross-linking; and finally, performing amidoximation reaction using the hydroxylamine hydrochloride, thus obtaining a polymer CTS-g-Poly(AM / AO / DMAAPA). The polymer has efficient coordination property, can effectively capture uranium ions, has the advantages of large adsorption capacity, good stability and strong anti-interference capability, and thus has a board market prospect. The preparation method of the polymer is simple, convenient and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of uranium extraction from seawater and uranium-containing wastewater treatment, and specifically relates to a polymer used for uranium extraction in water bodies and a preparation method thereof. Background technique [0002] The International Energy Agency predicts that the world's energy demand will increase by 65% ​​by 2020. At that time, the world's energy supply will be seriously insufficient, and traditional energy cannot meet human needs. Nuclear energy will play an important role in making up for the energy gap. With the development of the world's nuclear energy industry, the demand for uranium resources is increasing day by day. At the same time, the treatment of uranium-containing waste liquid in spent fuel has become a difficult problem that all nuclear energy countries must face. On the one hand, high-efficiency uranium extraction materials can be used to extract uranium from seawater. There are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08F220/56C08F220/44C08F230/02C02F1/28C02F101/20
CPCC08G81/02C02F1/285C02F2101/20C08F220/56C08F220/44C08F230/02
Inventor 文君汪小琳胡胜熊洁邵大冬陈柏桦王宁田杰
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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