Application and preparation method of hydrogel bead material

Abstract

The invention discloses an application of a hydrogel bead material which is obtained by copolymerizing acrylic acid and acrylonitrile, performing amidoximation and then performing ionic crosslinking, and the hydrogel bead material is used for adsorbing uranium in a high-fluorine system. The material disclosed by the invention is an adsorption material which is low in cost, good in chemical stability, easy to separate and capable of adsorbing uranium in the high-fluorine system, has an excellent adsorption effect, can successfully realize separation of uranium and fluorine, reduces the radioactive content of fluorine tailings, successfully realizes clean management and control and recycling of resources; The preparation method of the material is simple and convenient to operate, the production process is easy to control, and large-scale application can be achieved; after uranium adsorption, the material is automatically separated from the system, centrifugation and other operation are not needed, and operability is high; the material is particularly suitable for treating uranium-containing wastewater in a fluorine-containing environment in nuclear industry enterprises in China; and uranium can be successfully and selectively separated from the fluorine-containing wastewater through the material, and important technical support is provided for solving the current nuclear potential safety hazard problem.

Description

technical field [0001] The invention relates to the use of the hydrogel material and a preparation method thereof. Background technique [0002] Energy is the material basis for the survival of human society and the most basic driving force for the development of the entire world. However, due to the limited resources of traditional energy sources and their increasingly significant harm to the environment. In 2035, my country's power generation will reach 150-180 million kilowatts, and the proportion of power generation will reach 10.0%-13.5%. With the strong support of national policies, my country's nuclear power has ushered in a golden period of rapid and rapid development. Although the high-quality development of nuclear energy has entered a period of strategic opportunities, the sustainable development of nuclear energy still faces many challenges. One of the core issues is the treatment of nuclear wastewater. In the course of the nuclear fuel cycle, from the mining o...

AI Technical Summary

Problems solved by technology

However, the biggest defect of this adsorbent is that the adsorbent cannot realize the separation of fluorine and uranium. The uranium and fluorine adsorbed by the adsorbent can only be stored and supervised in the form of solid waste, and the recycling of resources cannot be realized.

Cheng Yuanmei, College of Chemical Engineering, Sichuan University and others studied the adsorption characteristics of collagen fiber-loaded titanium material (TICF) on uranium in fluorine-uranium wastewater, see: Cheng Yuanmei, Sun Xia, Liao Xuepin, Zeng Fanjun, Wu Yun, Shi Bi. Adsorption characteristics of uranium in uranium wastewater[J]. Acta Chemical Society, 2011,62(02):386-392, the research results show that the adsorption capacity of TICF material for uranium reaches 147.5 mg / g at pH 5.0, but The fluoride ions coexisting in the solution have a great influence on the adsorption of TICF, and the masking agent aluminum nitrate fluorine needs to be added to eliminate the influence, which cannot realize further practical application

However, the nano-zero-valent iron in this method is extremely reducible and needs to be used in an anaerobic environment. The requirements for process equipment are too high, and it is difficult to achieve large-scale industrialization.

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