| 초록 |
The nuclear accident at the Fukushima Daiichi nuclear power station in 2011 released a huge quantity of radioactive contaminants into atmosphere. They were deposited by wind and rain on the various surfaces of objects such as soil, road, and building in large areas. a strippable coating that can be easily peeled off from the surface upon drying, have been applied to remove Cs-137. However, it becomes radioactive waste itself after use, requiring costly waste disposal. In this study, we developed a new surface decontaminant consisting of magnetic adsorbents having Cs adsorption ability and an polyvinyl alcohol(PVA)-borate hydrogel for the removal of Cs-137 from contaminated surfaces. The temperature sensitivity of PVA-borate hydrogel allows them to be peeled from a surface after surface decontamination. After surface decontamination, the adsorbent capturing the Cs-137 was magnetically separated for the volume reduction of radioactive waste. |
