[2C01-06] Migration/Sorption

[2C06] Rapid Removal of Cesium from Vermiculite by Collapsing the Interlayers with Hydrothermal Column System

*Xiangbiao Yin¹, Yoshikazu Koma¹, Yusuke Inaba², Kenji Takeshita² (1. Japan Atomic Energy Agency, 2. Tokyo Institute of Technology)

Keywords:Cesium desorption, hydrothermal treatment, volume reduction, ion exchange, decontamination

The decontamination and volume reduction of Cs contaminated soil by efficient Cs removal remains a
great challenge after the Fukushima Daiichi Nuclear Power Station accident. In present work, we studied the removal
of Cs from the clay soils by treating with hydrothermal cations in a column system. The new results showed that Cs
could be selectively removed from its collapsed interlayers in vermiculite by hydrothermally heating at 150°C.