2018 Annual Meeting

Presentation information

Oral presentation

IV. Nuclear Fuel Cycle and Nuclear Materials » 405-1 Radioactive Waste Management

[1O08-13] Reduction Technologies of Radiolysis Gas

Mon. Mar 26, 2018 2:45 PM - 4:20 PM Room O (M3-212 -M3 Building)

Chair: Daisuke Akiyama (Tohoku Univ.)

3:30 PM - 3:45 PM

[1O11] R&D on Reduction Technologies of Hydrogen Generated in Long-Term Waste Storage Containers

(4)Porosity and pore size control of multifunction geopolymer foam

*Taro Utsumi1, Isamu Kudo2, Tadachika Nakayama1, Tsuneo Suzuki1, Hisayuki Suematsu1 (1. Nagaoka University of Technology, 2. ADVAN ENG.co.,ltd)

Keywords:radioactive waste, geopolymer, foam

To improve the safety of the radioactive waste long-term storage containers for radioactive fuel debris and zeolite slurry from Fukushima Daiichi Nuclear Power Station and to utilize contaminated soil, passive autocatalytic recombiner (PAR) using porous geopolymer catalyst support is developed. In this presentation, we describe a control method of open porosity in geopolymer by optimizing viscosity of slurry. The results showed open porosity was increased from 43 to 81% by increasing the viscosity. From scanning electron microscopy observations, pores in the geopolymer connected with increasing the viscosity, which should be the reason to increase the open porosity.