Biomass Project Research Center, Hiroshima University, and HOSTY Association are co-organizing the Hiroshima University Biomass Evening Seminar. This seminar covers topics from the fundamentals of biomass to the latest information so that it can contribute the activities on biomass in this district. The 67th seminar will be held as follows. Please join.

Wednesday, 26 September 2018, 16:20-17:50

Engineering 115 Lecture Room, Higashi-Hiroshima Campus, Hiroshima University

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Commentary and Chair: Yukihiko MATSUMURA
Professor, Graduate School of Engineering, Hiroshima University

◆Lecture: Kunassanan SIRIBUNYAROJ
M2 Student, Graduate School of Engineering, Hiroshima University

“Nitrogen behavior in supercritical water gasification of glycine”
To reduce global warming problems, using energy from renewable source such as biomass instead of fossil fuel is now being sought. Since protein that contain nitrogen compounds is always found in biomass, in this study, glycine, which is the simplest amino acid, was chosen as representative model protein for investigating the simultaneously recovery of ammonia and gas generation under supercritical water gasification. A tubular flow reactor was employed and glycine was gasified in supercritical temperature (390-450 ℃) with fixing pressure at 25 MPa and glycine concentration of 1.0 wt% to observe the effect of residence time (5-60s). The behavior of nitrogen and gas production from glycine during the SCWG process were investigated. According to this experiment, most of nitrogen compounds in glycine are in form of ammonia and methylamine. The mainly gaseous that obtained from glycine decomposition were composed of H2, CO2. Small amount of CH4 was generated at high temperature.

◆Lecture: Kenichiro TANOUE
Professor, Department of Mechanical Engineering, Graduate School of Sciences and Engineering for Innovation, Yamaguchi University

“Study on characteristics of carbonization during torrefaction in the packed bed of biomass”
In this study, we conducted component analysis, measurement of high heating value after torrefaction and measurement of heat and mass transfer during the torrefaction in three types of biomass powder: Bamboo, Douglas fir and Bark. It was found that the high heating value (HHV) of Bamboo had the maximum value when the torrefaction temperature was 623 K. The HHV of Bamboo was larger than that of Douglas fir and Bark. The gas flow rate during torrefaction of Bamboo had a constant value because cellulose decomposition could be occurred partly after exothermic decomposition of Xylan. It was suggested that the torrefaction of Douglas fir and Bark would be controlled by thermal decomposition of Mannan and Lignin, respectively.

We will hold the discussion meeting from 18:00 (800 JPY needed). Join this meeting, too if you are available.