Energy Balance of Small-scale Biorefinery System

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Other Title
  • 地域分散型小規模バイオマスリファイナリーにおけるエネルギーバランス
  • Symposium Paper : Energy Balance of Small-scale Biorefinery System

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Abstract

In this study, small-scale bioethanol production from rice straw was demonstrated with a pilot plant. It combined with rice husk carbonization process which equipped a heat-recovery boiler to generate steam. By simultaneous saccharification and fermentation, 24.8 kg ethanol was produced in the fermentation broth from 99.6 kg of alkali-pretreated rice straw, and then 19.6 kg ethanol was recovered by distillation. It was shown that around 69% of total energy required (except for rice straw-derived energy) for bioethanol production process (from cutting to distillation) was covered by the heat recovered from the carbonization. A concept of small-scale biorefinery which combines bioethanol process and charcoal production for efficient energy use was successfully demonstrated.

Journal

  • ENVIRONMENTAL SCIENCE

    ENVIRONMENTAL SCIENCE 26 (6), 489-496, 2013

    SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN

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