Strippable coatings from polysaccharide-based gel for the removal of radioactive contamination from metal surfaces

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-05-27 DOI:10.1016/j.net.2025.103722

Alberto A. Pujol Pozo , Fabiola Monroy-Guzmán , María de los Ángeles Ruiz Rivera , Diana R. Gómora-Herrera , Rafael Basurto Sánchez

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Abstract

This paper proposes the use of polysaccharide-based gels as decontamination agents for metal surfaces contaminated with radioactive material to eliminate radioactive contamination of facilities, reduce the radiation dose and reduce the volume of equipment and materials that need to be disposed of. To decontaminate metal surfaces contaminated with radionuclides, polysaccharide-based gels have been formulated that can form easily strippable coatings. Anionic polysaccharides (pectin, sodium alginate, gum Arabic, xanthan gum, Guar gum, etc.) were prepared under different conditions. Strippable Coating forming gels were selected and applied to different metal specimens (stainless steel, aluminum, Inconel and Zircaloy) previously contaminated with different radionuclides and their respective decontamination factors were determined. The gels with the best decontamination performance and the coatings formed were characterized. The pectin-based gels showed the best decontamination performance of radioactive cations deposited on metal surfaces. The decontamination process with polysaccharide-based gels is based on the retention of the contaminant by the formation of complexes between the radioactive cations and the free functional groups in the polysaccharide structure.

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可剥离的涂层，由多糖类凝胶制成，用于去除金属表面的放射性污染

本文提出利用多糖基凝胶作为放射性物质污染金属表面的去污剂，消除设施的放射性污染，降低辐射剂量，减少需要处理的设备和材料体积。为了净化被放射性核素污染的金属表面，多糖基凝胶已经被配制成可以形成容易剥离的涂层。在不同条件下制备了阴离子多糖（果胶、海藻酸钠、阿拉伯胶、黄原胶、瓜尔胶等）。选择可剥离涂层形成凝胶，将其应用于不同放射性核素污染的不同金属样品（不锈钢、铝、铬镍铁合金和锆合金），并测定其去污系数。对去污性能最好的凝胶及其形成的涂层进行了表征。果胶基凝胶对沉积在金属表面的放射性阳离子的去污性能最好。以多糖为基础的凝胶的净化过程是基于在多糖结构中的放射性阳离子和自由官能团之间形成配合物来保留污染物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development