The91st Hiroshima University Biomass Evening (The76th Hiroshima University ACE Seminar)

The91st Hiroshima University Biomass Evening Seminar 

(The76th Hiroshima University ACE Seminar) was held.




Date & Time: Tue.12 Jan., 2021   16:20-17:50

Place: Engineering 110 Lecture Room, Higashi-Hiroshima Campus, Hiroshima University






Commentary: Yukihiko MATSUMURA

Professor, Graduate School of Advanced Science and Engineering, Hiroshima University



Lecture: Kaisei TAKEMURA

D2 student, Graduate School of Integrated Sciences for Life, Hiroshima University

“An approach to develop the practical ethanol production process from syngas by genetically engineered Moorella thermoacetica”


We have succeeded in producing ethanol from syngas by using genetically engineered Moorella thermoacetica.  The ethanol productivity needs to be enhanced to commercially relevant rates, and hence, I have attempted high-cell-density culture to achieve the high production rates.  The cells were concentrated up to 5.0g/L with the minimum loss of the activity, and the production rate was increased according to the cell density.  However, it was significantly lower than the potential value and the specific production rate was lower than expected.  In my presentation, I will discuss this issue, focusing on the transfer rate of the gaseous substrates into the liquid medium.



Lecture: Md.Azhar UDDIN

Professor, Graduate School of Environmental and Life Sciences, Okayama University

“Catalytic Steam Reforming of Liginocelluloisic Biomass-Derived Tar into Synthesis gas”


In recent years, the energy problem due to the depletion of fossil fuel resources and the global warming problem due to the increase in greenhouse gas CO2 emitted by the use of fossil fuels have become more serious. One of the solutions to this problem is the effective use of renewable biomass. There are several effective biomass utilization technologies, however in this research, we focused on gasification of woody or liginocellulosic biomass, aiming at catalytic decomposition of volatile matter (tar) generated in the gasification process. We proceeded with the development of iron-cerium catalysts for steam reforming of biomass-derived tar.



Chair: Yukihiko MATSUMURA

Professor, Graduate School of Advanced Science and Engineering, Hiroshima University