[16 February, 2022] The 99th Hiroshima University Biomass Evening Seminar (The95th Hiroshima University ACE Seminar)

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.  The99th seminar will be held as follows.  Please join.
Please wear a mask to protect against corona when participating.
In the case of direct participation, we will accept participation on the day. But We need to contact the online participants with the URL, so please fill in the required items in the format at the end and send it to bprc@hiroshima-u.ac.jp. Also for those who participate directly, it would be helpful if you could contact us in advance. Online, only ZOOM is used. Please understand that materials cannot be distributed and that there are possibilities of not being able to accept questions or bad connection.

Date & Time

Wednesday 16 February, 2022   16:20-17:50


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

For the access to the venue, click here.
For the campus map, click here.
For the layout of the lecture rooms, click here. (Japanese page)


Lecture: Ali Mohammed Ahmed MOHAMMED
D1 student, Graduate School of Advanced Science and Engineering, Hiroshima University
“Gasification of Glucose in Supercritical Water Using Carbon Nanotube Catalyst”

Among carbonaceous nanoparticles, carbon nanotube (CNT) is a possible biomass catalyst or a catalyst support. Nanocarbon should be more effective than conventional activated carbon catalysts, because of its nanostructure and a high specific surface area. In this study, glucose was used because it is a typical model compound of biomass. Ruthenium with CNT has been prepared and placed in the packed bed reactor located at the entrance of the reactor. The concentration of glucose was 5 wt%, the residence time, pressure and temperature were fixed at 94 s, 25 MPa and 600 °C, respectively.

Lecture: Rittanupap THAVORN
D1 student, Graduate School of Advanced Science and Engineering, Hiroshima University
 “The estimation of product yield from the hydrothermal carbonization process using feedstock as the mixture of cellulose, lignin, and xylose and each component”

Hydrothermal technology has been the spotlight for highly efficient conversion technology due to there is no limit to the moisture content for biomass during the hydrothermal process. There is no universal model to predict the behavior of different feedstock under HTC conditions. So, this study aims to compare yield from hydrothermal carbonization of the mixture of cellulose, lignin, and xylose and individual components to check the yield’s predictability from the composition and understand the mechanism toward the reaction. The experiment handled the hydrothermal carbonization (HTC) of feedstock at 200 to 280°C with many trials of feedstock components. The result indicates that the hydrochar product showed a decreasing trend of solid product mass yield at the higher temperature of carbonization, which initially started from 32.9 to 22.7% in a mixture of cellulose, lignin, and xylose. Finally, in predicting hydrochar product value, we found a 15.78 % error in the prediction value and experimental value of the hydrothermal carbonized mixture of cellulose, lignin, and xylose at 280°C.

Lecture: Kaisei TAKEMURA
D3 student, Graduate School of Integrated Sciences for Life, Hiroshima University
“Enhancing acetone productivity from H2/CO2 of the metabolically engineered thermophilic acetogen Moorella thermocatica by anaerobic respiration”

Gas fermentation utilizing hydrogen (H2) and carbon dioxide (CO2) is an attractive process because it can directly convert CO2, a causative agent of global warming, to valuable materials. We previously engineered a thermophilic acetogen, Moorella thermoacetica, to produce acetone from H2/CO2. Although the productivity was low, it was suggested that the productivity could be enhanced by improving the ability of adenosine triphosphate (ATP) synthesis. This study attempted to utilize anaerobic respiration to increase ATP production and investigated its effect on acetone productivity.

Lecture: Naoki WATANABE
M1 student, Graduate School of Integrated Sciences for Life, Hiroshima University
 “Development of practical production technology of acetate from H₂/CO₂ by Acetobacterium woodii”

A large amount of carbon dioxide (CO₂) emissions due to excessive dependence on fossil fuels has become a major problem. One of the ways to solve this problem is to make effective use of CO₂ emissions. Acetobacterium woodii produces acetate by using hydrogen (H₂) as an energy source to capitalize on CO₂. In this research, this feature is applied as a manufacturing technology that contributes to the effective use of CO₂ emissions, and we aim to put it to practical use by investigating of medium composition for low cost production of acetate and increasing the speed of acetate production.

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

For those who wish to participate

Please post the following 5 items (1-4 are required) in the email, write "I would like to participate in the evening seminar" in the subject line, and send it to bprc@hiroshima-u.ac.jp. 

1. Participation Seminar: February 16th, 99th Biomass Evening Seminar 
2. Name: 
3. Email address: 
4. Participation form: □ Online □ Face-to-face 
5. Message:


HOSTY Association (Graduate School of Advanced Science and Engineering) 
Email: bprc*hiroshima-u.ac.jp (Please replace*with @)