著者

岡田 久幸 宮崎 龍一 伊藤 啓史

出版者

一般社団法人 日本エネルギー学会

雑誌

バイオマス科学会議発表論文集 第12回バイオマス科学会議 (ISSN:24238333)

巻号頁・発行日

pp.81-82, 2017-01-12 (Released:2017-01-20)

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"Bamboo Frontier Vision" constructed in Nankan-machi, Kumamoto is consisted in the three companies. One is the bamboo material processing plant and a 2nd is the raw material pretreated plant and a 3rd is the energy plant. They are the first processing, commercialization and energy use of the balance material consistently focusing on the bamboo for the area resources. We find out the ash from combustion of bamboo and bark material has the sterilization and deodorant effect. In this case, the ash could be used for valuable with no expenses. We report the possibility of ash for sterilization and the deodorant effect.

著者

郷原 巧 Ankit JAIN 松本 悟志 荒巻 徹 伊藤 順子 渡邉 信 野口 良造 中嶋 光敏 市川 創作

出版者

一般社団法人 日本エネルギー学会

雑誌

バイオマス科学会議発表論文集 第14回バイオマス科学会議 (ISSN:24238333)

巻号頁・発行日

pp.91-92, 2019-01-09 (Released:2019-01-09)

参考文献数

3

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Microalgal biocrude was produced by hydrothermal liquefaction (HTL) of native microalgae slurry using a bench-scale continuous flow tubular reactor. The native algae was harvested in an open raceway pond in Minamisoma city, Fukushima prefecture. The slurry of native algae was continuously injected to a tubular reactor by high-pressure pumps, and the temperature was increased gradually through preheating tubes. The slurry eventually reached the reaction tube, which was held at 350 °C and 19.5 MPa, where it was kept for 6 min. The yield of biocrude recovered in a tank No. 1 was 43.0 wt%. The higher heating value (HHV) of biocrude was 29.1 MJ/kg-dry (34.5 MJ/kg-daf) calculated by the chemical elements using Dulong's formula.

著者

菅澤 貢 吉廻 秀久 繁田 政治

出版者

一般社団法人 日本エネルギー学会

雑誌

バイオマス科学会議発表論文集 第14回バイオマス科学会議 (ISSN:24238333)

巻号頁・発行日

pp.1-2, 2019-01-09 (Released:2019-01-09)

参考文献数

2

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Bamboo forests mostly uncontrolled are spread nationwide in Japan and expanding the area with 3,000ha per year. Bamboo is growing rapidly but difficult to use as biomass because it contains harmful substances like potassium (K) and chlorine (Cl) which cause a fatal damage to boilers and a generation of carcinogenic Dioxins. HITACHI has developed an innovative reforming process, i.e. pulverizing and eluting to eliminate the above harmful substances which enables bamboo can be used as a typical wood-based biomass. And moreover, the waste liquid used for elution can be reused as a fertilizer realizing an environmentally friendly recycling scheme.

著者

川口 秀夫 寺村 浩 中村 聡子 荻野 千秋 原 清敬 蓮沼 誠久 老沼 研一 高谷 直樹 平野 恒 佐塚 隆志 北野 英己 近藤 昭彦

出版者

一般社団法人 日本エネルギー学会

雑誌

バイオマス科学会議発表論文集 第11回バイオマス科学会議 (ISSN:24238333)

巻号頁・発行日

pp.35-36, 2016-01-14 (Released:2017-03-22)

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Sorghum bagasse pretreated with diluted acid, which was predominantly composed of glucan (59%) and xylan (7.2%), was used as a lignocellulosic feedstock to produce D-phenyllactic acid (PhLA) by a recombinant Escherichia coli strain expressing phenylpyruvate reductase from Wickerhamia fluorescens. Compared to filter paper hydrolysate, the PhLA yield was reduced by 35% during fermentation with enzymatic hydrolysate of sorghum bagasse as a carbon source, and metabolomics analysis revealed that intracellular levels of erythrose-4-phosphate and phosphoenolpyruvate and NAD(P)H regeneration for PhLA production from glucose markedly reduced. Compared to the separate hydrolysis and fermentation (SHF) with sorghum bagasse hydrolysate, simultaneous saccharification and fermentation (SSF) of sorghum bagasse under glucose limitation conditions yielded 4.8-fold more PhLA with less accumulation of eluted components of p-coumaric acid and aldehydes, which inhibited PhLA fermentation. These results suggest that gradual hydrolysis of sorghum bagasse during SSF reduces the accumulation of both glucose and fermentation inhibitors, collectively leading to increased PhLA yield.

著者

佐野 哲也 吉田 貴紘 井 春夫 大原 誠資

出版者

一般社団法人 日本エネルギー学会

雑誌

バイオマス科学会議発表論文集 第6回バイオマス科学会議 (ISSN:24238333)

巻号頁・発行日

pp.50-51, 2011-01-12 (Released:2017-03-22)

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The moisture reduction in fuelwood of Japanese cypress (Chamaecyparis obtusa) and evergreen oak spp. (Quercus glauca) was evaluated under some conditions differentiated in split sizes (one quarter or one eighth), drying area (paved or unpaved, roofed or unroofed), and season (winter or summer). Japanese cypress dried out more rapidly than oak. Splitting enables the acceleration of drying rate and size effect was more enhanced in oak with higher wood density. Any benefits of natural seasoning were realized within the first one or two month. Under natural seasoning with uriroofed condition, there was little benefit in longer drying period of fuelwood in terms of rainfall.

著者

木根 啓太 砂川 直輝 石田 卓也 五十嵐 圭日子 鮫島 正浩 金子 哲

出版者

一般社団法人 日本エネルギー学会

雑誌

バイオマス科学会議発表論文集 (ISSN:24238333)

巻号頁・発行日

vol.12, pp.157-158, 2017

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<p>Two α-L-arabinofuranosidase genes classified in Glycoside Hydrolase (GH) family 51 from the basidiomycetes Phanerochaete chrysosporium and Flammulina velutipes were cloned, and the recombinant enzymes expressed in the yeast Pichia pastoris were characterized. When p-nitrophenyl-α-L-arabinofuranoside was used as a substrate, two enzymes showed acidic pH optima at pH 3. The two enzymes released L-arabinose from rye arabinoxylan, wheat arabinoxylan, sugar beet arabinan and debranched arabinan, but not from arabinogalactan.</p>