Title:
Fate of Radioactive Caesium during Woody Biomass Gasification
Author(s):
Koido, K., Iwasaki, T.
Document(s):
Paper
Poster
Abstract:
Due to the Fukushima Daiichi Nuclear Power Plant accident occurred in 2011, radioactive caesium was dispersed over a wide range of eastern Japan including forest area. In the resident areas, the radioactivity from the substances is much lower than that at the moment. On the other hand, it is still high radioactivity in forest areas. Thus, a possibility of contaminated woody biomass utilisation for gasification fuel is expected as forest decontamination. However, much remains unclear about the behaviour of radiocaesium during gasification process. In this study, gasification of contaminated woody biomass is investigated to reveal the behaviour of radioactive caesium during gasification for safe biomass use. Through an operation of a laboratory scale gasifier, the behaviours are measured in various gasification conditions. As a result, it is revealed that radioactive caesium vaporised at the higher reaction temperature (T = 1000°C), and that the vaporised caesium increases with increasing S/C ratio at T = 1000°C.
Keywords:
biomass, combined heat and power generation (CHP), gasification, mass balance
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for power, CHP and polygeneration
Event:
26th European Biomass Conference and Exhibition
Session:
2CV.2.21
Pages:
726 - 727
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-2CV.2.21
Price:
FREE
