A kind of terpolymer hydrogel and its preparation method and application

Abstract

The invention relates to a terpolymer hydrogel capable of enriching and separating uranium in aqueous solution and a preparation method thereof. The terpolymer hydrogel takes K2S2O8-NaHSO3 as an initiator, takes acrylonitrile, acrylic acid and beta-cyclodextrin as raw materials, an emulsion polymerisation method is used for preparing a product through a binary grafting copolymerization reaction of acrylonitrile and beta-cyclodextrin, and the functional terpolymer hydrogel acrylonitrile-acrylic acid-beta-cyclodextrin (AN / AA / beta-CD) can be synthesized. The terpolymer hydrogel has the advantages that the raw materials are easily available, the terpolymer hydrogel is a uranium separating agent with good performance, adsorption rate is high, the preparation method is simple and easy to carry out, desorption condition is mild, no massive strong acid as well as poisonous and harmful substances can be discharged during a whole process, no secondary pollutant is generated, and the novel functional terpolymer hydrogel is environmentally friendly, and can be recycled.

Description

technical field [0001] The invention relates to a terpolymer hydrogel, a preparation method and application thereof. Specifically, the present invention relates to a terpolymer hydrogel capable of enriching uranium in a separated aqueous solution, its preparation method and application. Background technique [0002] Uranium and its compounds are one of the important raw materials in the nuclear industry, and are the basis for nuclear power applications and military nuclear weapons. However, in the process of mass production and utilization of uranium resources, because uranium is a radioactive element, it will release alpha rays. Therefore, there is a serious threat to human health and the natural ecological environment. Therefore, the sustainable development of uranium resources is very necessary. How to reasonably and effectively remove and recover the pollution of uranium nuclides in radioactive wastewater has also been paid more and more attention. At present, common me...

AI Technical Summary

Problems solved by technology

[0005] The preparation method of terpolymer hydrogel of the present invention is: with K 2 S 2 o 8 -NaHSO 3 As the initiator, using acrylonitrile, acrylic acid and β-cyclodextrin as raw materials, the optimal experimental conditions for the binary graft copolymerization of acrylonitrile and β-cyclodextrin were explored by emulsion polymerization, and then the synthesized propylene Nitrile-acrylic acid-β-cyclodextrin (AN / AA / β-CD) functionalized terpolymer hydrogel was used as an adsorbent to overcome the material to a certain extent while maintaining its excellent enrichment and separation ability. A single deficiency, expanding its scope of application, and providing data support for the realization of green treatment of radioactive wastewater

Images