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Enhancement of enzymatic hydrolysis of sugarcane bagasse by pretreatment combined green liquor and sulfite

机译：绿液和亚硫酸盐预处理促进甘蔗渣的酶水解

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摘要

Green liquor (GL) is readily available in any pulp mills which could be recycled. Alkaline sulfite pretreatment process was developed for non-woody biomass biorefinery. In this study, GL combined with sulfite was effectively utilized to improve the enzymatic hydrolysis of sugarcane bagasse by selectively removing lignin. Compare to conventional alkaline sulfite pretreatment, the solid yield could be higher with low degradation of polysaccharide. With the increment of the pretreatment temperature from 100 to 140 degrees C, the enzymatic hydrolysis efficiency was improved. And a higher glucose yield was achieved under pretreatment condition of 0.4 g/g-DS Na2SO3 and 1.5 mL/g-DS GL due to the higher degradation of xylan. The highest glucose yield of 96.8% could be reached with 3.36 g/(L.h) of initial rate after Kraft GL-sulfite pretreatment at 140 degrees C. The superior performance of Kraft GL allows conversion of cellulose to glucose more significantly than Soda GL. In addition, surface tension test indicated that a part of lignin was dissolved in the pretreatment liquor as lignosulfonate. The results showed that GL combined with sulfite is a promising way for sugarcane bagasse pretreatment. (C) 2017 Elsevier Ltd. All rights reserved.
机译：绿液（GL）在任何可回收利用的制浆厂中都很容易获得。开发了用于非木质生物质生物炼制厂的碱式亚硫酸盐预处理工艺。在这项研究中，与亚硫酸盐结合的GL被有效地用于通过选择性去除木质素来改善甘蔗渣的酶促水解。与传统的碱式亚硫酸盐预处理相比，多糖的降解率低，固体产率更高。随着预处理温度从100摄氏度增加到140摄氏度，酶水解效率得到提高。由于木聚糖的降解程度更高，在0.4 g / g-DS Na2SO3和1.5 mL / g-DS GL的预处理条件下获得了更高的葡萄糖产量。在140摄氏度下对Kraft GL-亚硫酸盐进行预处理后，以3.36 g /（L.h）的初始速率可以达到96.8％的最高葡萄糖产量。KraftGL的优越性能使纤维素比Soda GL转化得更多。另外，表面张力测试表明一部分木质素以木质素磺酸盐的形式溶解在预处理液中。结果表明，GL与亚硫酸盐结合是甘蔗渣预处理的一种有前途的方法。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Fuel》 |2017年第1期|707-714|共8页
  • 作者

    Zhou Ziyuan; You Yanzhi; Lei Fuhou; Li Pengfei; Jiang Jianxin; Zhu Liwei;

  • 作者单位

    Beijing Forestry Univ, MOE Engn Res Ctr Forestry Biomass Mat & Bioenergy, Dept Chem & Chem Engn, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, MOE Engn Res Ctr Forestry Biomass Mat & Bioenergy, Dept Chem & Chem Engn, Beijing 100083, Peoples R China;

    Guangxi Univ Nationalities, Guangxi Key Lab Chem & Engn Forest Prod, Coll Chem & Chem Engn, Nanning 530006, Peoples R China;

    Guangxi Univ Nationalities, Guangxi Key Lab Chem & Engn Forest Prod, Coll Chem & Chem Engn, Nanning 530006, Peoples R China;

    Beijing Forestry Univ, MOE Engn Res Ctr Forestry Biomass Mat & Bioenergy, Dept Chem & Chem Engn, Beijing 100083, Peoples R China;

    Beijing Forestry Univ, MOE Engn Res Ctr Forestry Biomass Mat & Bioenergy, Dept Chem & Chem Engn, Beijing 100083, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sugarcane bagasse; Pretreatment; GL-sulfite; Enzymatic hydrolysis;

    机译：甘蔗渣;预处理;亚硫酸GL;酶解;

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