湖北农业科学 ›› 2020, Vol. 59 ›› Issue (22): 97-99.doi: 10.14088/j.cnki.issn0439-8114.2020.22.017

• 资源·环境 • 上一篇    下一篇

过氧化氢和氢氧化钙联合预处理对小麦秸秆纤维素、半纤维素、木质素含量的影响

王泽家, 陈炀, 董媛媛   

  1. 中国农业大学烟台研究院,山东 烟台 264670
  • 收稿日期:2020-03-26 出版日期:2020-11-25 发布日期:2020-12-30
  • 作者简介:王泽家(1998-),男,山东济南人,在读本科生,研究方向为设施农业,(电话)13165138558(电子信箱)645398300@qq.com

Effects of hydrogen peroxide and calcium hydroxide pretreatment on cellulose, hemicellulose and lignin content in wheat straw

WANG Ze-jia, CHEN Yang, DONG Yuan-yuan   

  1. Yantai Research Institute,China Agricultural University,Yantai 264670,Shandong,China
  • Received:2020-03-26 Online:2020-11-25 Published:2020-12-30

摘要: 以小麦秸秆为预处理对象,分别研究不同浓度配比的过氧化氢和氢氧化钙联合预处理和不同的预处理时间对小麦秸秆中纤维素、半纤维素和木质素(三素)含量的影响,同时考察冻融条件对小麦秸秆三素含量的影响情况。用滴定法测定三素含量。结果表明,最适的冻融联合碱预处理条件为在-10 ℃冷冻处理2 d,100 ℃融化,过氧化氢和氢氧化钙质量分数分别为0.4%和0.2%时,小麦秸秆中三素含量降低最明显,纤维素含量为17.5%,半纤维素含量为6.8%,木质素含量为7.8%。

关键词: 小麦秸秆, 冻融, 碱, 联合预处理

Abstract: The experiment took wheat straw as the pretreatment object to study the effect of hydrogen peroxide and lime combined pretreatment with different concentration ratio on the content of cellulose,hemicellulose and lignin (three elements) in wheat straw and the effect of different pretreatment time on the content of three elements in wheat straw.The effects of freezing-thawing conditions on the content of three elements in wheat straw were also investigated.Use titration method to determine three content,through research to determine the optimum freeze-thaw combined alkali pretreatment conditions as followsWhen the mass fraction of hydrogen peroxide and calcium hydroxide was 0.4% and 0.2% respectively after two days of freezing at -10 ℃ and melting at100 ℃,the content of tri-element in wheat straw decreased most obviously,including17.5% cellulose,6.8% hemicellulose and7.8% lignin.

Key words: wheat straw, freezing and thawing, alkali, combined pretreatment

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