Percolation 공정에서 참나무의 전처리에 과산화수소가 미치는 영향

Effect of Hydrogen Peroxide on Pretreatment of Oakwood in a Percolation Process

  • 하석중 (경상대학교 응용화학공학부 및 생산기술연구소) ;
  • 김성배 (경상대학교 응용화학공학부 및 생산기술연구소) ;
  • 박순철 (한국에너지기술연구소 바이오매스연구실)
  • 발행 : 1999.06.01

초록

참나무의 전처리에 과산화수소가 미치는 영향을 조사하였다. 반응온도는 $170^{\circ}C$이고 전처리에 사용된 반응용액은 암모니아, 황산 그리고 순수 물이었다.10% 암모니아용액을 사용한 경우 산을 사용하는 경우에 비해 리그닌 제거율은 55%로 상당히 높았지만 헤미셀룰로오스 회수율은 26%로 상당히 낮았다. 그래서 헤미셀룰로오스 회수율을 높이기 위해 암모니아 용액에 산화제인 과산화수소를 첨가하여 반응시켰는데 과산화수소 첨가량의 증가에 따라 리그닌 제거율과 헤미셀룰로오스 회수율의 증가는 크지 않았다. 그리고 과산화수소 첨가량의 증가에 따라 액상으로 용해된 당의 분해가 증가하여 전체 헤미셀룰로오스와 셀룰로오스의 물질수지에 문제가 있었다. 반응기에 주입된 과산화수소는 주로 반응기의 전반부에 충진된 기질과 반응하는 것으로 나타났다. 헤미셀룰로오스 회수율을 높이기 위해서는 알카리용액보다 산성용액에서 기질을 전처리하는 것이 필요하였고 산보다는 물을 사용하였을 때 과산화수소의 효과가 더 컸다.

The effect of hydrogen peroxide on pretreatment of oakwood was investigated. Reaction temperature was $170^{\circ}C$ and reaction solutions used in pretreatment were aqueous ammonia, sulfuric acid and pure water. When 10% ammonia solution was used, the extents of delignification and hemicellulose recovery were 55% and 26%, respectively. These values were significantly higher as delinigfication and lower as hemicellulose recovery than those of acid hydrolysis. To overcome this problem, hydrogen peroxide was added into ammonia solution stream to increase hemicellulose recovery. But delignification and hemicellulose recovery were not increased as much as hydrogen peroxide loading was increased. And as hydrogen peroxide loading was increased, the decomposition of sugars solubilized from hemicellulose and cellulose were increased. So there were significant differences between the total amount in solid residue and liquid hydrolyzate, and the total amount in the original biomass. It was found that hydrogen peroxide added was reacted with substrate packed mostly in the front part of reactor. In order to increase hemicellulose recovery, it was necessary to treat with acidic solution than with alkali solution. Effect of hydrogen peroxide was higher in water than acid solution.

키워드

참고문헌

  1. NREL/TP-421-4978 Processes for Pretreating Lignocellulosic Biomass : A Review McMillan, J. D
  2. Korean J. Biotechnol. Bioeng. v.13 no.3 Dilute Acid Pretreatment of Woody Hemicellulose using a Percolation Process Yum, D. M.;S. B. Kim;S. C. Park
  3. Tappi v.49 no.2 Mechanisms of Alkaline Delignification 1.Overall Reaction Pattern Kleinert, T. N.
  4. Biotechnology and Bioengineering v.26 High-Efficiency Ethanol Production from Lignocellulosic Residue Pretreated with Alkaline$H_2O_2$ Goud, J. M.;S. N. Freer
  5. Biotechnology and Bioengineering v.26 Alkaline Peroxide Delignification of Agricultural Residues to Enhance Enzymatic Saccharfication Gould, J. M.
  6. Biotechnology and Bioengineering v.27 Products of Alkaline Peroxide Attack on Wheat Straw, Oak, and Kenaf Abbott, T.;R. Peterson
  7. Biotechnology and Bioengineering v.27 Effect of Hydrogen Peroxide Pretreatment on the Structural Features and the Enzymatic Hydrolysis of Rice Straw Wei, C.;C. Cheng
  8. Biotechnology and Bioengineering v.27 Enhanced Polysaccharide Recovery from Agricultural Besidues and Perennial Grasses Treated with Alkaline Hydrogen Peroxide Gould, J. M.
  9. Biotechnology and Bioengineering v.33 Improving the Nutritive Value of Lignocellulosics: The Synergistic Effects between Alkaline Hydrogen Peroxide and Extrusion Treatments Helmling, O.;G. Arnold;H. Rzehak;G. C. Fahey, Jr.;L. L. Berger;N. R. Merchen
  10. Applied Biocheemistry and Biotechnology v.34/35 Pretreatment of Lignocellulosic Municipal Solid Waste by Ammonia Fiber Explosion Holzapple, M. T.;J. E. Lundeen;R. Sturgis;J. E. Lewis;B. E. Dale
  11. Applied Biochemistry and Biotechnology v.57/58 Ammina Recyled Percolation Process for Pretreatment of Herbaceous Biomass Iyer, P. V.;Z. Wu;S. B. Kim;Y. Y. Lee
  12. 16th Symposium, on Botechnology for Fuels and Chemicals Ammonia-Recyled Percolation Process fro Pretreatment of Biomass Feedstock Yoon, H. H.;Z. Wu;Y. Y. Lee
  13. Applied Biochemistry and Biotechnology v.57/58 Fractionation of Herbaceous Biomass by Ammonia-Hydrogen Peroxide Percolation Treatment Kim, S. B.;Y. Y. Lee
  14. Symposium for Chemistry of Delignification with Oxygen The Reactions of Hydrogen Peroxide with Lignin Dence, C. W.
  15. Wood Chemistry Fundamentals and Applications Sjoktrom, E.
  16. NREL-Chemical Analysis & Testing Standard Procedere Ehrman, T.;K. Magill
  17. Cellulose Hydrolysis Fan, L. T.;M. M. Gharpuray;Y. H. Lee
  18. Lignin : occurrence, formation, structure and reactions Sarkanen, K. V.;C. H. Ludwig