Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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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
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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.

비식량 농업부산물인 왕겨로부터 에탄올 생산을 위한 효율적인 바이오매스 전처리 방법을 탐색하였다. 고온 고압 조건의 회분식 반응기에서 알칼리 용매는 암모니아와 가성소다, 산 용매는 희황산을 사용하였다. 가성소다 용액 처리 후 희황산 용액으로 복합처리한 시료의 효소 당화효율이 82.8%로 가장 높게 나타났고 이때 약 94.7%의 회분 성분 제거율을 보였다. 전처리 왕겨 시료의 효소 당화효율과 회분 성분 제거율 추세가 거의 비슷하게 나타나 왕겨의 효소당화 최대 저해요인이 회분(규산염) 성분임을 알 수 있었다. 따라서 규산염 함량이 높은 바이오매스는 고온 고압 조건하에서 가성소다-희황산 복합 처리법을 적용하는 것이 효소 당화효율 증진에 매우 유리함을 확인하였다.

Keywords

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