October 7, 2024 3rd IER seminar of FY2024 was held. ＜Graduate Student＞

Institute of Environmental Radioactivity (IER) regularly holds the IER seminar in which the faculty members report on their research results, with the aim of facilitating their research activities and promoting communication.

In the 3rd IER seminar of this fiscal year that was held on October 7, 2024, the presentation was given by a doctoral student majoring in Environmental Radioactivity to 20 participating researchers and students as follows.

Mr. Ripon in Rahman Laboratory presented ‘Development and application of a new macrocyclic ligand-functionalized mesoporous silica sorbent for selective separation of radiocesium from environmental wastewater’. Crown ethers are macrocyclic compounds with a high affinity for specific cations like cesium due to their well-suited cavity sizes and effective coordinating ability. When introduced into an aqueous solution containing cesium ions, the crown ether-based sorbent can selectively capture cesium ions. Mr. Ripon recently developed a novel crown ether-based sorbent and assessed its effectiveness in separating cesium from Fukushima-originated environmental wastewater.

After the presentation, various questions and comments were raised by IER faculty members and graduate students.