HomeBiomass 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 41th seminar will be held as follows. Please join.
【Date & Time】 Thu.14, Apr,2016 16:20-17:50
【Place】 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)
【Program】
Commentary: Yukihiko MATSUMURA (Professor, Institute of Engineering, Hiroshima University)
Chair: Thachanan SAMANMULYA (Special Postdoctral Reseacher,Hiroshima University)
◆Lecture: Kengo HISHIDA
M1 Student, Graduate School of Engineering, Hiroshima University
“Effect of Initial Grain Size on Product Yield under Hydrothermal Disk Milling”
Pretreatment of lignocellulosics for ethanol production is needed to loosen its rigid and complex structure to enhance enzymatic hydrolysis. Various pretreatment technologies have been studied. However, pretreatment using acid or alkaline has problems such as formation of inhibiting compounds for saccharification. In this sense, hydrothermal pretreatment, pulverization, or those combination pretreatments are more favorable. In this study, the effect of initial grain size on product yield was studied using hydrothermal disk milling for pretreatment. The result showed that 2.0-2.8 mm initial grain size showed the highest glucose yield, showing the lowest particle size after the treatment.
◆Lecture: Hiroshi ITO
M1 Student, Graduate School of Engineering, Hiroshima University
“Behavior of Uronic Acid during Hydrothermal Pretreatment of Kelp”
Recently, using the renewable energy is important. The marine biomass is one of the renewable energy. Kelp is a type of brown algae included in marine biomass, natural crop yields in japan account for more than 70 %. In this research, kelp was treated by continuous flow reactor under hydrothermal condition. The experimental condition, temperature is 170 ℃, the operating pressure is 5 MPa, and residence time is between 2.5 and 15 min. Finally, mannitol and guluronic acid (GA) was obtained. Recovery of GA was decreased in accordance with the residence time became longer, but at 15 min, the amount of GA decreased.
◆Lecture: Pattraporn CHANGSUWAN
D2 Student, Graduate School of Engineering, Hiroshima University
“Supercritical water gasification of solid components in barley shochu residue (Japanese Distilled Liquor)”
Supercritical water gasification of shochu residue solid was conducted at four different reaction temperatures (580, 600, 620 and 640 ℃), under a pressure of 25 MPa and residence time of 15 s. The gas, liquid, and solid products were analyzed by using gas chromatography, total organic carbon analyzer and CHNOS analyzer, respectively. The effect of temperature, residence time, and carbon gasification efficiency are discussed.
◆Lecture: Poomkawee CHANGKIENDEE
Special Research Student, Graduate School of Engineering, Hiroshima University
“Effect of Heating Rate on Supercritical Water Gasification of Shochu Residue”
Gasification of shochu residue was introduced in supercritical water with changing the preheater tube range from 0.45 to 1.80 m. Consequently, the heating rate was changed from 38.20 to 15.30 K/s. Decrease in heating rate from 38.2 to 26.9 led to higher gas production, possibly due to increase in time in supercritical region in longer preheater tube length. When the longest preheater tube length of 1.80 m, which was consistent with the lowest heating of 15.30 K/s, was employed, the gas yield seems to decrease.
※We will hold the discussion meeting from 18:00 (800 JPY needed). Join this meeting, too if you are available.
【Inquiries】
HOSTY Association (Graduate School of Engineering, Hiroshima University)
E-mail: bprc(AT)hiroshima-u.ac.jp（Please replace (AT) with @）
