Abstract
Remediation of sites contaminated with radioactive material such as Cs is important because of the risk posed to human health. Here, we report the effectiveness of using water containing air bubbles with a diameter around 100 nm (nanobubbled water) on removal of radioactive Cs. Nanobubbled water was effective for removal of radioactive Cs from granule conglomerate in Fukushima, Japan. Additionally, nanobubbled water made from tap water in Fukushima was also effective for removal of radioactive material from asphalt and concrete, but not wood and marble.