Degradation of Uranium-Contaminated Decontamination Film by UV Irradiation and Microbial Biodegradation

Zhang, Li; Lai, Jin-long; Luo, Xin; Li, Zhanguo

doi:10.1007/s00248-021-01862-0

Cited by 4 publications

(1 citation statement)

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“…Today, global energy requirements are increasing rapidly owing to the high-speed growth of industry and populations. Nuclear energy utilization, particularly uranium, has aroused extensive attention since the mid-20th century as a sustainable solution to the global energy crisis [1][2][3][4]. However, hazardous radioactive outputs, especially uranium, from nuclear power production have been unintentionally released into peripheral environments such as the surfaces and surroundings of nuclear facilities [5].…”

Section: Introductionmentioning

confidence: 99%

Aqueous Strippable Polymer Coating for Highly Efficient Primary Radioactive Uranium Decontamination with Versatility on Diversified Surface

Yang

Yue

et al. 2022

Polymers

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The decontamination of radioactive materials on the surfaces of nuclear facilities has generated large quantities of waste from the rapid development of the nuclear industry, posing a potential threat globally. Strippable coating has been employed for some time to remove radioactive contamination due to its high performance and removability, flexibility, and compatibility with various substrates. Herein, an aqueous strippable coating based on an adsorbent/polyvinyl alcohol (PVA) polymer was developed to remove radioactive uranium from stainless-steel surfaces that showed greater decontamination than that of DeconGel, with an efficiency of 87.2% for 5 g/L uranium and 95.5% for 22.5 g/L uranium, along with a high repeatability and better mechanical properties. Furthermore, the prepared coating was versatile and could be applied to a range of substrate surfaces (lacquered, aluminum, glass, plastic, and ceramic), with outstanding performance ranging from 79.2 to 95.4% for 1 g/L uranium. The prepared coating could also be applied through brushing or spraying to horizontal or vertical substrates. The exceptional performance could be due to the synergistic effect of the introduction of ethylene diamine tetra-acetic acid disodium salt (EDTA-2Na) as a chelating agent and the nano-adsorbent CaCO3/TiO2.

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