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. 89 (2010), No. 1

  • Biodiesel Fuel Production from Waste Animal Fats Using Alternative Solid Catalysts

    pp. 36-41

    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.89.36

    Biodiesel fuel (BDF) has attracted attention as an alternative fossil fuel. BDF comprises fatty acid methyl esters (FAME) produced generally from triacylglycerols (TG) in vegetable oils treated with methanol. In Europe, BDF is manufactured from virgin vegetable oils grown on vast farmlands, while in Japan, where cultivation areas are small, it is manufactured from used cooking oils. Used cooking oils in Japan partly come from animal fats, which produce free fatty acids (FFAs) upon degradation. FFAs react with an alkali hydroxide used as the catalyst, and the produced soap brings about decrease a BDF yield. Since a massive amount of waste water due to homogeneous alkali catalysis of alkali hydroxide dissolved in methanol is discharged from the producing process, the post-processing is required. Due to these limitations, the applicability of the anion exchange resins as alternatives to the alkali catalyst was examined. It was clarified that the anion exchange resin was activated by binding with methoxide ions, which are regenerated during transesterification, allowing for their reuse. Compared to the hydroxide-type resins that are deactivated by adsorption of FFAs generated during the reaction, the methoxide-type resins maintain their activity, as no FFA is generated. Such deactivation could be controlled by esterifying FFAs with cation exchange resins before transesterification.
    x

    Readers Who Read This Article Also Read

    1. Combustion Characteristics of Hydrogen in a Catalytic Fluidized Bed Journal of the Japan Institute of Energy Vol.86(2007), No.10
    2. Flame Characteristics in a Wick Combustion of GTL Kerosene Journal of the Japan Institute of Energy Vol.86(2007), No.10
    3. A Study on Evaluating Risk in CDM Journal of the Japan Institute of Energy Vol.86(2007), No.11
  • Design of Biomass Co-firing System Considering Resource Distribution and Transportation Optimization

    pp. 42-52

    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.89.42

    Biomass resources have huge potential to secure energy supply in next decades with carbon neutral emissions. However, the resources itself are widely scattered diffusely throughout the country, and the capacity of utilization plant highly depends on the quantity of primary resources available. The study focuses on the equilibrium between resource supply and energy demand in Tohoku area in Japan, considering geographical distribution and transportation paths. Woody biomass and agricultural residues are introduced in the study as a co-firing fuel supplied to three coal power stations in Tohoku area. The biomass energy system is modeled and analyzed using both geographic information solver and the roadway condition data. In particular, resource supply such as biomass resource collection, preprocessing before transportation, storage, long distance transportation, and energy conversion to electricity, is modeled and introduced to the system. As a result of the model analysis, a supply curve of biomass resources is obtained, which shows a relationship between procurement cost for power supply and annual electricity production at coal power stations. The supply curve shows that an electricity of 4.3 × 108 kWh/yr can be supplied with the procurement cost of 10 JPY/kWh, and the maximum electricity reaches 12.7 × 108 kWh/yr with the procurement cost of 14 JPY/kWh.
    x

    Readers Who Read This Article Also Read

    1. Combustion Characteristics of Hydrogen in a Catalytic Fluidized Bed Journal of the Japan Institute of Energy Vol.86(2007), No.10
    2. Flame Characteristics in a Wick Combustion of GTL Kerosene Journal of the Japan Institute of Energy Vol.86(2007), No.10
    3. A Study on Evaluating Risk in CDM Journal of the Japan Institute of Energy Vol.86(2007), No.11
  • Heterogeneously Catalyzed Ethanolysis of Groundnut Crude Oil Using Activated Calcium Oxide and Surface-Modified Activated Calcium Oxide

    pp. 53-58

    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.89.53

    The effectiveness of bio-oils' heterogeneously-catalyzed ethanolysis, using groundnut (Arachis hypogaea) crude oil, activated calcium oxide (h-CaO), and surface-modified activated calcium oxide (s-CaO) for biodiesel production in developing countries, was studied in comparison with potassium hydroxide (KOH) and calcium hydroxide [Ca(OH)2] in terms of reaction, effect of catalyst type and loading of 1.0 wt%, molar ratio of 9:1, time ranging from 0.5 to 3.0 h, at 78 °C and stirring speed of 1000 rpm. Ca(OH)2 was inferior to KOH, h-CaO and s-CaO regardless of reaction time, achieving fatty acid ethyl esters (FAEE) yields, after 0.5, 2, and 3 h, of 0.24 ± 0.03 wt%, 1.09 ± 0.72 wt%, 8.08 ± 0.80 wt% comparing 56.19 ± 1.98 wt%, 76.57 ± 2.20 wt%, 76.99 ± 4.18 wt% , and 62.32 ± 1.95 wt%, 88.81 ± 0.82 wt%, 85.30 ± 4.56 wt%, and 51.40 ± 1.76 wt%, 81.21 ± 1.30 wt%, 83.23 ± 1.09 wt%, respectively. The activity of h-CaO, s-CaO and KOH agreed quite well showing the comparable effectiveness of the catalysts on ethanolysis. Generally, yields decreased after 2-h, due to product adsorption after 2 h. We based on these results and concluded that this paper is the first to report the effectiveness of h-CaO and s-CaO for bio-oil heterogeneously catalyzed ethanolysis for sustainable biodiesel production in developing countries.
    x

    Readers Who Read This Article Also Read

    1. Combustion Characteristics of Hydrogen in a Catalytic Fluidized Bed Journal of the Japan Institute of Energy Vol.86(2007), No.10
    2. Flame Characteristics in a Wick Combustion of GTL Kerosene Journal of the Japan Institute of Energy Vol.86(2007), No.10
    3. A Study on Evaluating Risk in CDM Journal of the Japan Institute of Energy Vol.86(2007), No.11

Article Access Ranking

07 Dec. (Last 30 Days)

  1. Heat conduction through different slag layers in mold. Thermal conductivity measurement of commercial mold fluxes ISIJ International Advance Publication
  2. Deformation of Non-metallic Inclusions in Steel during Rolling Process: A Review ISIJ International Vol.62(2022), No.11
  3. Activity of Chromium Oxide in Calcium Silicate Bearing Molten Slag for Highly Clean Chromium Steel Refining Process ISIJ International Advance Publication
  4. Effects of basicity and Al2O3 content on the crystal structure of silico-ferrite of calcium and aluminum ISIJ International Advance Publication
  5. Behavior and kinetic mechanism analysis of dissolution of iron ore particles in HIsmelt process based on high-temperature confocal microscopy ISIJ International Advance Publication
  6. Corrections of the figure in the paper “Effect of Cerium and Magnesium Addition on Evolution and Particle Size of Inclusions in Al-killed Molten Steel” [ISIJ International, Vol. 62 (2022), No. 9, pp. 1852-1861] ISIJ International Vol.62(2022), No.11
  7. Precipitation Behavior of Magnetite Phase during Modified Nickel Slag Treated by Molten Oxidation ISIJ International Advance Publication
  8. A shallow neural network for recognition of strip steel surface defects based on attention mechanism ISIJ International Advance Publication
  9. Characterization and Control of Secondary Phase Precipitation of Nb–V–Ti Microalloyed Steel during Continuous Casting Process ISIJ International Vol.62(2022), No.11
  10. Improvement of Sinter Productivity and Qualities by Placing Low Slag Green Pellet at Lower Layer of Sinter Packed Bed ISIJ International Vol.62(2022), No.11

Search Phrase Ranking

07 Dec. (Last 30 Days)

  1. blast furnace
  2. converter slag
  3. si-killed spring steel
  4. 高温変形抵抗
  5. 5%nickel
  6. 钢渣脱磷
  7. coatings hot formed steel
  8. free lime
  9. secondary cooling billet
  10. steel