Date & Time: Wed., Jan. 17, 2024 16:20-17:50
Onsite & Online Hybrid
Place: Engineering 110 Lecture Room, Higashi-Hiroshima Campus, Hiroshima University

Online: If you are online, you need to apply.

<Program>
Commentary: Yukihiko MATSUMURA
Professor, Graduate School of Advanced Science and Engineering, Hiroshima University

Lecture: Miao LIU
M2, Graduate School of Advanced Science and Engineering, Hiroshima University

“Effect of reaction time on hydrothermal carbonization of pistachio nut shells”

Pistachio nut shells represent a plentiful source of organic waste. To harness this resource efficiently, we utilized hydrothermal carbonization in our study. This process involved subjecting pistachio nut shells to hydrothermal carbonization within an autoclave, where we explored the effects of varying reaction times on yield and elemental composition. The experiments were conducted at two distinct temperatures, 250°C and 280°C, across a time span ranging from 0 to 120 minutes. In addition, we have analyzed the hydrochar properties to explore potential application possibilities.

Lecture: Koichi TAKEMOTO
B4, School of Engineering, Hiroshima University

“Effect of concentration on hydrothermal carbonization of glucose”

The use of biomass is required to achieve a sustainable, carbon-neutral society. Hydrothermal carbonization is one of the biomass conversion technologies. It aims to obtain useful carbon-rich solids. In this study, experiments were conducted using 0.5, 1.0, and 1.5 mol/L aqueous glucose solutions as feedstock in a batch-type reactor at a reaction temperature of 250°C and a reaction time of 30 minutes to investigate the effect of concentration on its reaction characteristics.

Lecture: Yuki MAKI
M2, Graduate School of Advanced Science and Engineering, Hiroshima University

“Effect of heating rate on cellulose behavior in hot compressed water”

The carbon gasification efficiency for supercritical water gasification can be enhanced by increasing the heating rate.  This is due to the short time in the subcritical region during which solid products are formed.  On the other hand, short heating time may result in incomplete dissolution of the feedstock to hinder gasification.  It is therefore important to investigate the effect of heating rate.  In this study, the heating rate was varied by the target temperature and flow rate so that the effect of the heating rate on supercritical water gasification can be elucidated.  A continuous reactor was employed.  Interestingly, the amount of solid product did not change with increasing the target temperature, while the amount of gas product increased.

Lecture: Kosuke YAMADA
B4, School of Engineering, Hiroshima University

“Effect of activated carbon catalysts on supercritical water gasification of glucose”

The effect of activated carbon catalysts on supercritical water gasification was studied by product analysis using high-performance liquid chromatography. Activated carbon is known to adsorb some organic compounds from water. This effect of adsorption should be separated.  In this study, supercritical water gasification of glucose was carried out in a continuous reactor at 450 oC, 25MPa with and without activated carbon catalyst and the result was discussed with the adsorption characteristics of the activated carbon.

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：Jan. 17, 2024、111th Hiroshima University Biomass Evening Seminar
２．Name：
３．e-mail address：
４．Participation form：□Online　□Face-to-face
５．message：

Date & Time: Wed., Nov. 22, 2023 16:20-17:50

Onsite & Online Hybrid

Place: Engineering 114 Lecture Room, Higashi-Hiroshima Campus, Hiroshima University
※ Please note that it is different from the usual Lecture Room.

Online: If you are online, you need to contact us.

<Program>

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

Lecture: Kazuhiro MOCHIZUKI
Academic-Environment Social Governance Science and Technology Research Center, Professor (Special Appointment), Hiroshima University

“Biomass utilization and carbon cycle / carbon recycling”

The growth of biomass, due to the fixation of CO2, is an important component in the carbon cycle. On the other hand, carbon recycling is a mechanism to reduce CO2 emissions into the atmosphere by reusing separated and recovered CO2 as organic substances, i.e., chemical feedstock and fuels. It can be the cyclical use of carbon within human society. In this presentation, the biomass utilization is discussed from the viewpoints of carbon cycle and carbon recycling, respectively.

Lecture: Takashi ENDO
Graduate School of Advanced Science and Engineering, Professor, Collaborative Research Laboratory, Hiroshima University

“Nanocellulose applicable from materials to energy”

Nanocellulose produced from plants such as wood is ultrafine fibers with a width of 100 nm or less. Nanocellulose has high physical properties such as high strength, high elasticity, and special viscosity, and the development of high-performance materials by compounding with resins, rubbers, etc. is being vigorously pursued by utilizing these characteristics. In addition, it has a large surface area, high reactivity and adsorption of substances, and high enzymatic saccharification. This characteristic is also effective as a pretreatment in bioethanol production.

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：Nov. 22, 2023、110th Hiroshima University Biomass Evening Seminar
２．Name：
３．e-mail address：
４．Participation form：□Online　□Face-to-face
５．message：

Details are here.

Date & Time: Thu., Oct. 19, 2023 16:20-17:50
Onsite & Online Hybrid
Place: Engineering 110 Lecture Room, Higashi-Hiroshima Campus, Hiroshima University
Online: If you are online, you need to apply.

<Program>
Commentary: Yukihiko MATSUMURA
Professor, Graduate School of Advanced Science and Engineering, Hiroshima
University

Lecture: Ken FURUTA
B4, School of Engineering, Hiroshima University
“Highly dispersed zinc oxide catalyst for biodiesel synthesis under supercritical methanol conditions”

Biodiesel is attracting attention as an alternative fuel to diesel oil because it is sustainable and carbon neutral. However, conventional biodiesel synthesis methods have problems with long reaction times and large amounts of wastewater. Therefore, the use of catalysts under supercritical methanol conditions was designed to solve these problems. In this study, carbon nanotube-supported zinc oxide catalysts were used under supercritical methanol conditions, and a significant improvement in biodiesel yield was achieved.

Lecture: Mizuki KODAMA
B4, School of Engineering, Hiroshima University
“Effect of catalyst amount on carbon gasification efficiency of
supercritical water gasification of glucose”

Supercritical water gasification (SCWG) is a promising technology for efficiently converting biomass into useful gases. In this process, catalysts play a crucial role in accelerating the reaction and improving gas yields. To enhance the efficiency and cost-effectiveness of SCWG, researchers have turned to carbon nanotubes (CNTs) and other carbon-based materials as catalyst supports.
In this study, the effect of catalyst amount on supercritical water gasification of glucose was studied experimentally. Carbon gasification efficiency was calculated, and compared to the model prediction.
Acknowledgements: <i>This work was supported by JSPS KAKENHI Grant Number JP22K18313.</i>

Lecture: Mohammed Ahmed Mohammed ALI
D3, Graduate School of Advanced Science and Engineering, Hiroshima University
“Reaction rate determination of glucose gasification in supercritical water using CNT and Ru/CNT catalysts”

Carbon nanotubes (CNT), with their unique structure, recently became a good candidate to be used in the catalyst field. On the other hand, a ruthenium (Ru)-based catalyst with CNT support (Ru/CNT) showed great performance in the catalytic gasification of glucose. The reaction rates from the gasification of glucose should be determined for both CNT and Ru/CNT catalysts. However, reaction rate analysis using space time that is often used for catalytic reaction can be changed by catalyst mass and/or feedstock flow rate. This study clarified the difference between these two ways of changing space time, and it is recommended only catalyst mass or only feedstock flow rate is changed.

Lecture: Shunsuke KOMATSU
M1, Graduate School of Integrated Sciences for Life, Hiroshima University
“Development of Methane Fermentation from Organic Wastes with Ammonia Recovery Process”

In this study, a methane fermentation process with ammonia recovery using ammonia adsorbent was investigated. To investigate the effect of hydrothermal treatment on methane productivity from livestock wastes, methanogenic potential tests were conducted on hydrothermally treated chicken manure, beef cattle manure, dairy cattle manure, and swine manure. The results showed that hydrothermally treated swine manure was superior for methane fermentation. Therefore, hydrothermally treated swine manure was subjected to methane fermentation in a 10 L reactor. Ammonia recovery tests using the fermentation residue demonstrated that zirconium phosphate pellets were effective as an ammonia adsorbent.

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：Oct. 19, 2023、109th Hiroshima University Biomass Evening Seminar
２．Name：
３．e-mail address：
４．Participation form：□Online　□Face-to-face
５．message：

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

Date & Time: Wed., Nov. 22, 2023 16:20-17:50

Onsite & Online Hybrid

Place: Engineering 114 Lecture Room, Higashi-Hiroshima Campus, Hiroshima University

Online: If you are online, you need to apply.

Date & Time: Thu., Oct. 19, 2023 16:20-17:50

Onsite & Online Hybrid

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

Online: If you are online, you need to apply.

Date & Time: Tue., July. 25, 2023 16:20-17:50

Onsite & Online Hybrid

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

Online: If you are online, you need to apply.

<Program>

Commentary: Yukihiko MATSUMURA

Professor, Graduate School of Advanced Science and Engineering, Hiroshima

University

Lecture: Rittanupap THAVORN

D3, Graduate School of Advanced Science and Engineering, Hiroshima University

“Effect of treatment time on the product from hydrothermal carbonization of cellulose-lignin-xylose mixture”

This study aims to understand the effect of treatment time on both liquid and solid products generated under hydrothermal carbonization of the cellulose, xylose, and lignin mixture to develop the future universal model for hydrothermal carbonization product prediction. This study focuses on the hydrochar product obtained from HTC of the mix of components, cellulose, hemicellulose (xylose), and lignin, in various ratios at 280 ゜ C for 0, 0.5, and 2 h.

This study observed interactions between the feedstock mixture affected the product yield and properties. This work was supported by JST, the establishment of university fellowships towards the creation of science technology innovation, Grant Number JPMJFS2129

Lecture: Koshi UENO

M1, Graduate School of Integrated Sciences for Life, Hiroshima University

“Elucidation of the growth arrest mechanism of acetogenic bacteria Acetobacterium woodii

in continuous culture process using H2/CO2.”

The study focuses on the investigation of growth inhibition factors for A.Woodii in continuous culture process using H2/CO2 Despite the continuous supply of fresh culture medium, a complete cessation of microbial growth was observed. Dilution of the fermentation broth with water revealed that even with dilution alone, the cultivation was successfully recovered, suggesting the accumulation of growth inhibition substances. Furthermore, in order to evaluate the impact of a neutralizing agent, NaOH, experiments were conducted. The addition of Na+ in the cultivation system resulted in a significantly lowered specific growth rate, indicating the inhibitory effect of Na+ as one of the growth inhibition factors.

Lecture: Jun TOMINAGA

Assistant Professor, Graduate School of Integrated Sciences for Life, Hiroshima University

“Smart farming and carbon-circulating society learning from photosynthesis.”

I have been working on the functional analysis and improvement of photosynthesis from an agronomic perspective. I have also focused on photosynthesis as a means to optimize crop production, and am developing a novel method to measure photosynthesis that can be the next smart farming technology. Based on my experience with biomass projects in Okinawa, I have been also developing a concept of ‘biomass village’ for self-sufficiency in energy and resources in mountainous regions in Japan since I started working here. This seminar will introduce these projects, which are just getting started.

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：July. 25, 2023、108th Hiroshima University Biomass Evening Seminar

２．Name：

３．e-mail address：

４．Participation form：□Online　□Face-to-face

５．message：

HU-ACE will host The 8th International Symposium on Fuels and Energy (ISFE 2024) will be held on July 1-2, 2024. We are preparing for a hybrid event, with on-site participation at the Higashihiroshima Art and Culture Hall “Kurara“, and online participation via ZOOM. The ISFE2024 website is currently under preparation, please follow us for more details.

The 7th International Symposium on Fuels and Energy (ISFE2023) was held at the Higashi Hiroshima Arts and Culture Hall “Kurara”, organized by Advanced Core for Energetics, Hiroshima University (HU-ACE). For the first time in four years, we were able to use an onsite venue; therefore, we organized ISFE2023 under onsite-online hybrid style. 

This year’s event, which included face-to-face meetings for the first time in four years, included 9 keynote speeches, 25 oral presentations, 26 poster presentations, active questions, and an opinion exchange meeting, which I think was an opportunity to gain a lot of related knowledge.

ISFE2023 Homepage URL

ISFE2023 report URL

【Date & Time】  Thu., 13 July., 2023 21:00-22:00 (japan Standard Time)

【Place】 Online

TeamURL⇒ https://teams.microsoft.com/l/meetup-join/19%3ameeting_YTA1NzFkYjctY2U3Yy00NzcwLTg3ZGMtN2JlZTIwNTA0YWE0%40thread.v2/0?context=%7b%22Tid%22%3a%22c40454dd-b263-4926-868d-8e12640d3750%22%2c%22Oid%22%3a%22cf96655f-f8c7-4843-a921-345c3ed72aa6%22%7d

【Lecture title】

Experimental and Analytical Examinations into Large-Scale Gas Explosion Venting

【Speaker name】 C. REGIS L. BAUWENS

Program⇒ PDF

【Entry fee】free

Click here for those who wish to participate⇒　https://forms.gle/pRg5dNDmX9YFohKx9

【Organizer】

Graduate School of Advanced Science and Engineering, Hiroshima University, Mechanical Engineering Program

Co-organization: Advanced Core of Energetics Hiroshima University (HU-ACE)

【Inquiries】 Graduate School of Advanced Science and Engineering, Hiroshima University

KIM,Wookyung（ E-mail : kimwk@hiroshima-u.ac.jp Tel : 082-424-7559 ）

We’d like to inform that we extend the deadline of presentation applications for ISFE2023 until June 19th.

ISFE2023, hosted by Advanced Core for Energetics, Hiroshima University (HU-ACE). will be held on July 3-4th, 2023.
We are preparing for a hybrid event, with on-site participation at the Higashihiroshima Art and Culture Hall “Kurara“, and online participation via ZOOM. Please visit the following ISFE 2023 website for more details.

 Please visit our ISFE2023 web site, and submit your presentation.

Thank you for your cooperation.

We’d like to inform that we extend the deadline of presentation applications for ISFE2023 until June 9th.

ISFE2023, hosted by Advanced Core for Energetics, Hiroshima University (HU-ACE). will be held on July 3-4th, 2023.
We are preparing for a hybrid event, with on-site participation at the Higashihiroshima Art and Culture Hall “Kurara“, and online participation via ZOOM. Please visit the following ISFE 2023 website for more details.

 Please visit our ISFE2023 web site, and submit your presentation.

Thank you for your cooperation.

Event report ⇒ here!

Event report ⇒ here!

Date & Time

Location

Program

For those who wish to participate

HU-ACE will host The 7th International Symposium on Fuels and Energy (ISFE 2023) will be held on July 3-4, 2023. We are preparing for a hybrid event, with on-site participation at the Higashihiroshima Art and Culture Hall “Kurara“, and online participation via ZOOM. Please visit the following ISFE 2023 website for more details.

Click here for the ISFE2023 official website

Date & Time: Mon., April. 24, 2023 16:20-17:50

Onsite & Online Hybrid

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

Online: If you are online, you need to apply.

<Program>

Commentary: Yukihiko MATSUMURA

Professor, Graduate School of Advanced Science and Engineering, Hiroshima

University

Lecture: Tomohiro ISEKI

M2, Graduate School of Advanced Science and Engineering, Hiroshima University

“GASIFICATION OF GLUCOSE IN A RAPID HEATING TUBE-BOMB REACTOR .”

Utilization of biomass resources is required to prevent global warming. One of the conversion technologies required for utilization of biomass is supercritical water gasification, but generation of solid products reduces the gas yield. It is believed that the gas yield can be completely improved by increasing the heating rate. The objective of this study is to increase the temperature increase rate by using induction heating and to investigate its temperature increase characteristics and gas yield. A batch reactor with a volume of 3.2 mL was heated by an induction heater to gasify glucose, a model compound of biomass.

Lecture: Rittanupap THAVORN

D3, Graduate School of Advanced Science and Engineering, Hiroshima University

“COMPARISON OF PRODUCTS FROM THE HYDROTHERMAL CARBONIZATION OF CELLULOSE, LIGNIN, AND XYLOSE MIXTURE OF DIFFERENT FRACTIONS.”

This study focuses on the hydrochar product obtained from HTC of the mixture of components, cellulose, hemicellulose (xylose), and lignin, in various ratios at 280 °C for 0.5 to 2 h. The result indicated that interactions between cellulose-xylose and xylose-lignin affected the mass product yield. The characteristics of hydrochar products are also discussed in terms of particle size

Lecture: Miao LIU

M2, Graduate School of Advanced Science and Engineering, Hiroshima University

“HYDROTHERMAL CARBONIZATION OF PISTACHIO NUT SHELLS.”

With the use of fossil fuels, a lot of environmental pollution is caused, so we need to find clean energy.  Hydrothermal carbonization can simulate the formation process of coal in the natural environment, converting biomass into hydrochar.  In this study, pistachio shells were used as raw materials to convert them into hydrochar through hydrothermal carbonization reaction. By controlling the reaction temperature, reaction time, and raw material ratio, the purpose of increasing hydrochar production was achieved. At the same time, by analyzing hydrochar  properties, looking for possible applications.  At present, some tests have been completed at 280°C, and it is concluded that the production of hydrochar will first increase and then decrease with the increase of the reaction residence time, and reach a peak when the reaction residence time is 60 minutes.

Lecture: Tomohiro ISEKI

M2, Graduate School of Advanced Science and Engineering, Hiroshima University

“HYDROTHERMAL LIQUEFACTION OF FRUCTOSE USING WATERMELON RIND BIOCHAR AS A CATALYST .”

The use of biomass is required because to prevent global warming. Hydrothermal processing is one of the biomass conversion technologies that can produce 5-HMF and levulinic acid from biomass. Hydrothermal treatment sometimes uses catalysts, and inexpensive and easily separable catalysts are required. Therefore, in this study, biochar made by pyrolyzing watermelon rind was functionalized and used as a catalyst. As a result, it was found that bio-char functionalized with sulfuric acid promoted the reaction the most. It was also found that the yields of 5-HMF and levulinic acid varied depending on the reaction temperature.

Chair: Yukihiko MATSUMURA

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

[For those who wish to participate]

Please post the following 5items (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：April. 24, 2023、106th Hiroshima University Biomass Evening Seminar
２．Name：
３．e-mail address：
４．Participation form：□Online　□Face-to-face
５．message：

Event report ⇒ here!

【Date & Time】  Fri., 21 April., 2023 9:00-11:00

【Place】 Online

TeamURL⇒

【Lecture title】

An Introduction to Dust Explosions:

Understanding the Myths and Realities of Dust Explosions for a Safer Workplace

【Speaker name, affiliation】 Prof. Paul Amyotte

Dalhousie University, Canada

Program⇒

【Entry fee】free

Click here for those who wish to participate⇒

【Organizer】

Graduate School of Advanced Science and Engineering, Hiroshima University, Mechanical Engineering Program

Co-organization: Advanced Core of Energetics Hiroshima University (HU-ACE)

【Inquiries】 Graduate School of Advanced Science and Engineering, Hiroshima University

KIM,Wookyung（ E-mail : kimwk@hiroshima-u.ac.jp Tel : 082-424-7559 ）