Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (6): 30-36.doi: 10.3969/j.issn.1000-565X.2015.06.005

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Effect of Preimpregnation with Ionic Liquid Microemulsion on Enzymolysis Efficiency of Eucalyptus

Yang Ren-dang Li Long Yang Fei   

  1. State Key Laboratory of Pulp and Paper Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2015-01-07 Revised:2015-04-07 Online:2015-06-25 Published:2015-05-04
  • Contact: 杨飞(1978-)，男，博士，副研究员，主要从事生物质预处理，特种纸和造纸化学品研究． E-mail:yangfei@scut.edu.cn
  • About author:杨仁党(1967-)，男，博士，教授，主要从事加工纸与特种纸、植物资源综合利用新技术(生物质能源、纸浆模塑)的 研究． E-mail: rdyang@ scut． edu． cn
  • Supported by:
    Supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China during the“12th Five-Year Plan”(2013BAC01B03)

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Abstract: The effects of the composition，impregnation mode and treatment condition of alkali-strengthened DILMS (Double Ionic Liquid Microemulsion) on the enzymatic hydrolysis efficiency of eucalyptus were discussed，and the variation of monose content in the residue and the impregnation liquid was analyzed． Moreover，the increment of glucose in the enzymatic hydrolysis process was quantitatively investigated by means of the ion chromatography． Finally，suitable DILMS impregnation conditions，that is，a temperature of 100 ℃，an impregnation duration of 8 h and a substrate size of 40 meshes (namely a diameter of 180 ～380μm)，were determined． Experimental results indicate that，by using the alkali-strengthened quadrol (70℃，3h) impregnation with the DILMS preimpregnation，the glucose proportion in the total reducing sugar increases from 64. 33% to 96. 34%，the enzymatic hydrolysis efficiency improves from 35. 8% to 83. 2%，the actual yield of glucose is 2. 11 times that of the untreated raw mate-rial． It is thus concluded that the alkali-strengthened DILMS is effective in improving the preimpregnation efficiency．

Key words: double ionic liquid, microemulsion, quadrol, enzymatic hydrolysis, eucalyptus

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