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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Evaluation of Pitch Pine for Bioethanol Production by Organosolv Pretreatment

Organosolv 전처리를 통한 리기다소나무의 바이오에탄올 생산 적용성 평가

  • Youe, Won-Jae (Dept. of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University) ;
  • Kim, Yong Sik (Division of Wood Chemistry & Microbiology, Korea Forest Research Institute) ;
  • Kang, Kyu-Young (Dept. of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University)
  • 유원재 (동국대학교 바이오시스템대학 바이오환경과학과) ;
  • 김용식 (국립산림과학원 화학미생물과) ;
  • 강규영 (동국대학교 바이오시스템대학 바이오환경과학과)
  • Received : 2015.07.10
  • Accepted : 2015.08.21
  • Published : 2015.08.30
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Abstract

In this study, the feasibility of utilizing wood chips from pitch pine (Pinus rigida) was evaluated for bioethanol production by an organosolv pretreatment and enzymatic saccharification. When wood chips from pitch wood were pretreated with 75% (v/v) ethanol and 1.7% sulfuric acid as a catalyst at H-factor 2000, average pulp yield was 43.3%, which pretreated wood fibers showed higher glucan (55.8%) and lower lignin (12.2%) contents than untreated control (43.9% glucan and 27.8% lignin). After enzymatic saccharification, the organosolv pulps with 56.2% delignification rate reached above 97% conversion rate of cellulose to glucose. These results indicated that increasing the delignification rate causes micro pores on the surface of organosolv pulps resulting in improved the accessibility of enzyme onto the substrate. Moreover, it was in agreement with the SEM examination of wood fibers.

Keywords

References

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