Study on the Pretreatment of Rice Hull to Enhance Enzymatic Saccharification Efficiency

효소 당화효율 증진을 위한 왕겨의 전처리 방법 연구

  • Bark, Surn-Teh (Bioenergy Crop Research Center, National Institute of Crop Science, RDA) ;
  • Koo, Bon-Cheol (Bioenergy Crop Research Center, National Institute of Crop Science, RDA) ;
  • Moon, Youn-Ho (Bioenergy Crop Research Center, National Institute of Crop Science, RDA) ;
  • Cha, Young-Lok (Bioenergy Crop Research Center, National Institute of Crop Science, RDA) ;
  • Yoon, Young-Mi (Bioenergy Crop Research Center, National Institute of Crop Science, RDA) ;
  • Kim, Jung Kon (Bioenergy Crop Research Center, National Institute of Crop Science, RDA) ;
  • An, Gi Hong (Bioenergy Crop Research Center, National Institute of Crop Science, RDA) ;
  • Park, Kwang-Geun (Bioenergy Crop Research Center, National Institute of Crop Science, RDA) ;
  • Park, Don-Hee (Interdisciplinary Program of Bioenergy and Biomaterials, Chonnam National University)
  • 박선태 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 구본철 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 문윤호 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 차영록 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 윤영미 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 김중곤 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 안기홍 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 박광근 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 박돈희 (전남대학교 대학원 바이오에너지 및 바이오소재 협동과정)
  • Published : 2012.08.10

Abstract

The objective of this study was to investigate the efficient pretreatment method for bioethanol production from rice hull. Ammonia and sodium hydroxide as an alkaline solution and dilute sulfuric acid as an acidic solution were used in a batch reactor under high-temperature and high-pressure conditions. The highest enzymatic saccharification efficiency of 82.8% and ash removal rate of 94.7% were obtained in the dilute sulfuric acid treated sample after the sodium hydroxide solution treatment. The enzymatic saccharification efficiencies and ash removals of pretreated rice hull samples have very similar variation tendency. This means that the maximum obstructive factor for the enzymatic saccharification of rice hull is the ash (silicate) content in biomass. The findings suggest that the combined sodium hydroxide-dilute sulfuric acid treatment system under high-temperature and high-pressure conditions is a promising pretreatment method to enhance the enzymatic saccharification of the silica-rich biomass.

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