Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Characteristics of xylose and glucuronic acid at concentrated sulfuric acid hydrolysis

진한 황산 가수분해 반응조건에서 xylose와 glucuronic acid의 반응 특성

  • Cho, Dae-Haeng (Department of Chemical Engineering, Kwangwoon University) ;
  • Kim, Yong-Hwan (Department of Chemical Engineering, Kwangwoon University) ;
  • Park, Jong-Moon (Department of Wood and Paper Science, Chungbuk National University) ;
  • Sim, Jae-Hoon (Department of Wood and Paper Science, Chungbuk National University) ;
  • Kim, Byung-Ro (Department of Wood and Paper Science, Chungbuk National University) ;
  • Shin, Soo-Jeong (Department of Wood and Paper Science, Chungbuk National University)
  • 조대행 (광운대학교 화학공학과) ;
  • 김용환 (광운대학교 화학공학과) ;
  • 박종문 (충북대학교 목재종이과학과) ;
  • 심재훈 (충북대학교 목재종이과학과) ;
  • 김병로 (충북대학교 목재종이과학과) ;
  • 신수정 (충북대학교 목재종이과학과)
  • Received : 2012.05.08
  • Accepted : 2012.06.04
  • Published : 2012.06.30
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Abstract

Formed fermentation inhibitors during acid saccharification leads to poor alcohol production based on lignocellulosic bio-alcohol production process. In this work, it is focused on the formation of fermentation inhibitors from xylan, which is influenced by reaction tempearature and time of acidic sacharifiaction of xylose and glucuronic acid. In second step of concentrated acid hydrolysis, part of xylose and glucuronic acid was converted to furfuraldehyde and formic acid by dehydration and rearrangement reactions. Furfural was form from xylose, which was highly sensitive to reaction temperature. Formic acid was come from both xylose and glucuronic acid, which supposed to main inhibitor in biobutanol fermentation. Reaction temperature of second hydrolysis was main variables to control the furfural and formic acid generation. Careful control of acid saccharification can reduce generation of harmful inhibitors, especially second step of concentrated sulfuric acid hydrolysis process.

Keywords

References

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