Desorption of Cs⁺ from biotite using various organic and inorganic acids was evaluated considering the removal of Cs⁺ from contaminated soils. Oxalic acid was most effective in desorbing Cs⁺ from biotite. The desorption efficiency increased with heating temperature and time, and 94.8% desorption efficiency was obtained at 85 °C after 4 h. The contents of Al, Fe, and Mg in biotite decreased with the increasing heating time, and these contents decreased by 50%, 91%, and 95%, respectively after 4 h of oxalic acid treatment. In addition, X-ray diffraction could not detect biotite peaks after oxalic acid treatment. The results indicate that oxalic acid desorbed Cs⁺ from biotite by decomposing the biotite structure. Moreover, a desorption efficiency of Cs⁺ from biotite of >95% was obtained using oxalic acid treatment even in the biotite with aging of 3 months. Since the research on effective desorption of Cs⁺ around the boiling point of water is limited, the results of this study are expected to contribute to the development of low energy and environment-friendly remediation of soil contaminated with radioactive species.

考虑到从污染土壤中去除 Cs ⁺，评估了使用各种有机和无机酸从黑云母中解吸 Cs ^{+ 的情况}。草酸最有效地从黑云母中解吸 Cs ⁺。解吸效率随着加热温度和时间的增加而增加，在 85℃下 4小时后解吸效率达到 94.8% 。黑云母中Al、Fe、Mg的含量随着加热时间的增加而降低，草酸处理4h后，这些含量分别降低了50%、91%和95% 。此外，X 射线衍射无法检测到草酸处理后的黑云母峰。结果表明，草酸解吸了 Cs ⁺  通过分解黑云母结构从黑云母。此外，即使在老化 3 个月的黑云母中，使用草酸处理也获得了>95%的 Cs ⁺从黑云母的解吸效率。由于在水沸点附近对Cs ^{+ 的}有效解吸研究有限，本研究的结果有望为放射性物质污染土壤的低能耗和环境友好修复的发展做出贡献。