Journal of the Japan Institute of Energy
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 1882-6121
PRINT ISSN: 0916-8753

Journal of the Japan Institute of Energy Vol. 95 (2016), No. 4

  • Production of Bioethanol from Pulverized Japanese Cedar Powder by Simultaneous Saccharification and Fermentation with High-temperature Fermentability Yeast Schizosaccharomyces japonicus SS4-5

    pp. 283-288

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.95.283

    The present study was concerned with bioethanol production from the pulverized Japanese cedar powder by simultaneous saccharification and fermentation (SSF). The pulverized Japanese cedar powder, which was treated with vibration grained named tandem-ring mill, could be efficiently converted into sugar in enzymatic saccarification. When SF was done using this pulverized powder and high-temperature fermentability yeast Schizosaccharomyces japonicus SS4-5 at 40 °C, ethanol production was inhibited. To improve the efficiency of ethanol production under high temperature condition, SS4-5 was subjected to UV irradiation. As the result of mutation, we obtained stable ethanol producing mutant, named SS4-5SP, under high temperature condition. When SSF was done using SS4-5SP at 40 °C, ethanol production and ethanol yield were 51.11 g/L and 81.81 %, respectively. High efficiency ethanol production can be achieved by SSF using SS4-5SP.
  • Nutrition Characterization of Aqueous Phase Produced by the Hydrothermal Treatment of Microalgae

    pp. 289-295

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.95.289

    To mitigate the energy crisis and the environmental damage from fossil fuels exploration to combustion, much attention has been focused on liquid biofuel production from algae to reduce CO2 emission and dependence on petroleum. Among the existing algae-to-biofuels technologies, the hydrothermal treatment has been proposed as an attractive one since the produced bio-oil has lower oxygen content than pyrolysis, and the dewatering step of the feedstock is not necessary. However, much biomass residue will be produced associated with the oil extraction from algae, which should be discharged as wastes. Especially the aqueous fraction accounts for the major part of the products. In this study, a green microalgae obtained from TISTR (Thai Institute of Science and Technology Research), named No.8511, was processed under different hydrothermal conditions to investigate the properties of aqueous phase products in terms of the nutrient content. Hydrothermal treatment was conducted at different concentrations of algae (from 5 % to 30 %) and temperature ranges (from 210 °C to 290 °C). The major nutrition elements and trace metal elements in the aqueous phase were quantified and analyzed. The results showed that a considerable nutrition recovery in aqueous part is possible.
  • Adaptability of Wood Biomass to Fixed Bed Gasifier Controlling Bed Height

    pp. 296-302

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.95.296

    For the biomass-to-liquid (BTL) process, pressurized gasification is an option in order to produce synthesis gas. Fixed bed gasification is promising as it results in relatively high conversion efficiencies as compared to other types of gasifiers on a smaller scale. Wood chips are adaptable feedstock for updraft fixed bed gasifiers. In considering whether to use waste materials or the use of powders for gasifiers, adaptability of the feedstock is a concern. For this study, a pressurized updraft fixed bed gasifier was chosen. The experimental setup comprised the gasifier, feedstock hopper, feeder, etc. inside a pressure vessel. Palm kernel shells (PKS) and wood pellets were used as feedstocks in this study. Although PKS is as adaptable feedstock as wood chips for updraft gasifiers, the adaptability of wood pellets, which are a kind of briquette biomass, has not been confirmed. As a result, good gasification was achieved with PKS, whereas problems such as channeling of the gas flow were caused using wood pellets. Such problems were reduced by lowering the bed height of the materials inside the gasifier, which increased the outlet gas temperature.
  • Simultaneous Saccharification and Fermentation Using Environmental-adapted Yeast by Preculture

    pp. 303-306

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.95.303

    Ethanol production from lignocellulosic biomass has attracted attention for utilization as an alternative fuel for internal combustion. Pretreatment is the first step in the conversion of lignocellulosic biomass to ethanol. Fermentation inhibitors generated by hydrothermal pre-treatment have an inhibitory influence on yeast growth and fermentation. Simultaneous saccharification and fermentation (SSF) is a promising, cost-effective method demonstrated in this study. We showed that yeast acquired thermotolerance in preculture at 35 °C and the thermotolerant yeast developed tolerance to 5-HMF by adding 5-HMF in preculture. Thus, we showed that Saccharomyces cerevisiae has the ability to tolerate stress caused by multiple factors including heat and inhibitors.

Article Access Ranking

20 Jul. (Last 30 Days)

  1. Production and Technology of Iron and Steel in Japan during 2018 ISIJ International Vol.59(2019), No.6
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Preface to the Special Issue “Fundamentals and Application Technologies for High-performance Hot-dip Galvanized Coatings” Tetsu-to-Hagané Vol.105(2019), No.7
  4. Influence of Annealing Temperature and Dew Point on Kinetics of Mn External Oxidation Tetsu-to-Hagané Vol.105(2019), No.7
  5. Microstructure and Phase of Carbon Brick and Protective Layer of a 2800 m3 Industrial Blast Furnace Hearth ISIJ International Advance Publication
  6. Insights into Accumulation Behavior of Harmful Elements in Cohesive Zone with Reference to Its Influence on Coke ISIJ International Advance Publication
  7. Recycling of Blast Furnace Sludge to the Blast Furnace via Cold-Bonded Briquettes: Evaluation of Feasibility and Influence on Operation ISIJ International Advance Publication
  8. Understanding the Structure and Structural Effects on the Properties of Blast Furnace Slag (BFS) ISIJ International Vol.59(2019), No.7
  9. Properties-to-microstructure-to-processing Inverse Analysis for Steels via Machine Learning ISIJ International Advance Publication
  10. Quantitative Analyses of Chemical Structural Change and Gas Generation Profile of Coal upon Heating toward Gaining New Insights for Coal Pyrolysis Chemistry ISIJ International Advance Publication

Search Phrase Ranking

20 Jul. (Last 30 Days)

  1. blast furnace
  2. blast furnace productivity
  3. 龍角散
  4. chinese academy of science
  5. blast furnace permeability
  6. continuous casting
  7. corrosion
  8. ladle furnace
  9. balling index
  10. cao-sio2-feo