KSBB Journal

  • 제29권3호
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  • Pages.193-198
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  • 2014
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  • 1225-7117(pISSN)
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  • 2288-8268(eISSN)
한국생물공학회 (The Korean Society for Biotechnology and Bioengineering)
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효소 가수분해 향상을 위해 고압조건에서 Glycerol 수용액을 사용한 폐지의 전처리

Pretreatment of Wastepaper using Aqueous Glycerol under High Pressure to Enhance Enzymatic Hydrolysis

  • 서동일 (경상대학교 공과대학 생명화학공학과 및 공학연구원) ;
  • 김창준 (경상대학교 공과대학 생명화학공학과 및 공학연구원) ;
  • 김성배 (경상대학교 공과대학 생명화학공학과 및 공학연구원)
  • Seo, Dong Il (Department of Chemical & Biological Engineering and ERI, Gyeongsang National University) ;
  • Kim, Chang-Joon (Department of Chemical & Biological Engineering and ERI, Gyeongsang National University) ;
  • Kim, Sung Bae (Department of Chemical & Biological Engineering and ERI, Gyeongsang National University)
  • 투고 : 2014.03.14
  • 심사 : 2014.06.05
  • 발행 : 2014.06.30
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초록

Pretreatment of wastepaper using aqueous glycerol under high pressure was studied to enhance the enzymatic hydrolysis. The pretreatment was conducted over a wide range of conditions including temperatures of $150{\sim}170^{\circ}C$, sulfuric acid concentrations of 0.5~1.5%, and reaction times of 30~90 minutes. After the effect of glycerol concentration on the pretreatment performance was investigated, 70% glycerol was selected. As glycerol concentration was increased, higher digestibility was achieved due to higher lignin removal. The optimum condition was found to be around $160^{\circ}C$, 1%, and 60 minutes. At this condition, 60% and 35% of hemicellulose and lignin, respectively, were removed, while only 5% of cellulose was lost. The enzymatic digestibility was 76%, meaning that 73% of the glucan present in the initial substrate was recovered as glucose after enzymatic hydrolysis. Also, it was found that the temperature and acid concentration than the reaction time were more strongly related to the compositional removals and enzymatic digestibility.

키워드

참고문헌

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피인용 문헌

  1. Modified organosolv pretreatment for improved cellulosic ethanol production from sorghum biomass vol.177, pp.None, 2014, https://doi.org/10.1016/j.indcrop.2021.114409