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Lignin Separation from Corn Stalk Using 1,4-Butanediol
  
DOI：10.11980/j.issn.0254-508X.2016.06.016
Key Words:1,4-butanediol  corn stalk  lignin
Fund Project:本课题得到国家自然科学基金(31270626,31270627,31370580,31470602)、山东省重大科技专项(2014ZZCX09101,2015ZDZX-09002)的资助。
Author NameAffiliation
王雪娇 齐鲁工业大学制浆造纸科学与技术省部共建教育部重点实验室,山东济南,250353 
杨桂花 齐鲁工业大学制浆造纸科学与技术省部共建教育部重点实验室,山东济南,250353 
陈嘉川 齐鲁工业大学制浆造纸科学与技术省部共建教育部重点实验室,山东济南,250353 
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Abstract:Corn stalk, as the main agricultural residual in China, can be realized the fully utilization of its three main components by developing the lignin separation technology. High boiling solvent of 1,4-butanediol was selected as cooking solvent to separate lignin from corn stalk in this study. The optimal cooking conditions were: 1,4-butanediol 90% (mass fraction), cooking temperature 160℃, solid/liquid ratio 1∶10, time at maximum temperature 1.5 h, dosage of concentrated sulfuric acid 0.15 mL/g (on the oven dried raw material). The highest lignin extraction rate was 89.2%, corresponding to 18.2% on the oven dried raw material. Additionally, no significant change of the functional groups of lignin was verified by FT-IR, it provided the potential for downstream application.
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