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Dissolution Behaviors of Lignin and Carbohydrate in Bagasse during High Boiling Solvent Pretreatment
  
DOI：10.11980/j.issn.0254-508X.2011.05.005
Key Words:bagasse  1,4-butanediol  high boiling solvent pretreatment  lignin  carbohydrate
Fund Project:制浆造纸工程国家重点实验室资助项目“结合预抽提的甘蔗渣高沸醇法生物炼制过程及机理研究”（200805）；广西自然科学基金资助(桂科自0832032)。
Author NameAffiliation
王景全1,4 1.广西大学轻工与食品工程学院，广西南宁，530004；4.广西永凯糖纸集团有限责任公司，广西南宁，530001 
赵　红1 1.广西大学轻工与食品工程学院，广西南宁，530004 
胡湛波2 2.广西大学环境学院，广西南宁，530004 
刘世锋1 1.广西大学轻工与食品工程学院，广西南宁，530004 
胡会超3 3.华南理工大学制浆造纸工程国家重点实验室，广东广州，510640 
柴欣生3 3.华南理工大学制浆造纸工程国家重点实验室，广东广州，510640 
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Abstract:This paper reports the kinetic dissolution behaviors of lignin and carbohydrate in bagasse during 1,4-butanediol pretreatment. The results showed that the solvent concentration of 60% is suitable, which will be economically feasible in consideration of the solvent recycling. The lignin and carbohydrate dissolution undergoes bulk and residual stages, the activation energies of those two stages for lignin are 98.6 and 152.3 kJ/mol respectively, and 117.4 and 125.9 kJ/mol for carbohydrate respectively. The cellulose will be degraded seriously when the content of lignin in the bagasse is reduced to less than 3.2%. This data are of certain guiding significance in optimizing the pretreatment process of bagasse biorefinery using 1,4-butanediol solvent.
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