2019 Annual Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 505-2 Waste Disposal and Its Environmental Aspects

[2C01-06] Migration/Sorption

Thu. Mar 21, 2019 9:30 AM - 11:10 AM Room C (Common Education Bildg. 2 1F No.11)

Chair:Daisuke Minato(CRIEPI)

10:45 AM - 11:00 AM

[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.