Comparative Evaluation of Ethanol Production Process from Cellulosic Biomass with Different Pretreatment and Saccharification Method

DOI

Bibliographic Information

Other Title
  • 前処理・糖化法の違いを考慮したセルロース系バイオエタノール製造プロセスの比較評価

Abstract

It is important to produce bioethanol from cellulosic biomass, which doesn’t compete with food. Ethanol production process from cellulosic biomass is classified by many pretreatment and saccharification methods. This study considers three methods that are using concentrated sulfuric acid hydrolysis (NEDO), dilute sulfuric acid pretreatment and enzyme saccharification (NREL), and hot water and milling pretreatment and enzyme saccharification (AIST). Three processes are designed by process simulator PRO/Ⅱ, and these material and energy balances are calculated. Conversion efficiencies of saccharification and fermentation are sensitive for ethanol production system, so the range of efficiency values is considered. Finally, these processes are evaluated by amount of CO2 emission reduction. NEDO process needs a large amount of thermal energy for sulfuric acid recovery, and AIST process uses a lot of power for disk milling. NREL process achieves the highest CO2 emission reduction. In the case of no byproduct (mainly lignin) use, however, all processes has a potential to be not able to reduce CO2 emission. In order to reduce CO2 emission, it is essential to use byproduct for process energy supply.

Journal

Details 詳細情報について

  • CRID
    1390282752325663104
  • NII Article ID
    130007706674
  • DOI
    10.24778/jjser.30.2_9
  • ISSN
    24330531
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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