[3PS-220]
Development of Highly-Selective PVA/SA/Prussian Blue Composite Membrane for Radioactive Cesium Decontamination
발표자이성주 (국립한밭대학교)
연구책임자정성원 (국립한밭대학교)
Abstract
Radioactive cesium released from nuclear accidents poses serious environmental and health risks due to its high mobility and long half-life. In this study, we propose a biodegradable and efficient adsorptive hydrogel filter for cesium removal based on a poly(vinyl alcohol) (PVA) and sodium alginate (SA) composite immobilized Prussian Blue (PB) as a selective cesium adsorbent. A porous nanofibrous membrane was prepared via electrospinning, followed by freeze-thaw treatment and borax crosslinking to obtain a stable hydrogel structure under high flow aqueous conditions. In the PVA/SA/PB composite membrane, PB exhibits low mechanical stability. To address this issue, differences in solvent solubility between PVA and PB were utilized to enhance structural stability under organic solvent conditions. As a result, the membrane enables stable immobilization of PB, facilitating selective cesium capture and suggesting potential applicability to the removal of other radioactive species.