Presentation Information

3:35 PM - 3:50 PM JST(6:35 AM - 6:50 AM UTC)

[2A13]Establishment of decomposition method for TANNIX adsorbent by hydrothermal reaction(1) Examination of treatment method for TANNIX adsorbent

*Toshihiro Iwamoto¹, Kohei Ohmori¹, Yoichi Arai¹, Tomomasa Funakoshi¹, Sou Watanabe¹, Masahiro Nakamura¹, Masaru Watanabe² (1. JAEA, 2. Tohoku Univ.)

Keywords:

TANNIX,subcritical water,TOC analysis,API-MS

TANNIX adsorbents are used to treat low-level radioactive liquid waste at the facility within the Nuclear Fuel Cycle Engineering Laboratories of the Japan Atomic Energy Agency (JAEA). The TANNIX adsorbent was planned to be incinerated, but issues were raised about the difficulty of recovering the uranium after incineration, and about corrosion inside the furnace due to the NOx generated during decomposition. Focusing on decomposition using subcritical water as a treatment method for TANNIX adsorbents, basic tests were conducted to evaluate its applicability, comparing treatment conditions of temperature, solid-liquid ratio, and heating time.

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