Effect of Steam Explosion on the Structure, Chemical Composition and Pyrolytic Volatile Composition of Tobacco Waste

IF 0.5 4区 医学
Ze Liu, Gaoxiang Xu, Chenhao Song, Wen Zuo, Siyuan Li, Chao Gui, Na Liu, Peng Hu, Ji Yang, Guofu Zhou, Wei Zhang, Yubao Chen
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Abstract

Tobacco stems are an important part of the tobacco leaf, containing a lot of cellulose, result in the low utilization of tobacco leaves in cigarettes. The pre-treatment technology of tobacco stems is a key to increase the utilization of tobacco stems. In this work, steam explosion treatment was carried out on tobacco stems with different moisture contents containing 2%, 5% and 10%, respectively. The steam explosion is carried out under different pressure and pressure holding time conditions, the changes in physical structure, chemical composition and pyrolysis volatiles of tobacco stem was investigated. The results indicate that steam explosion has a negligible impact on the crystalline structure of cellulose and low-order polysaccharide crystals, while it has an obvious effect on KCl. Steam explosion increases the specific surface area by destroying the amorphous structure on tobacco stems. The contents of chemical constituents and pyrolytic volatiles indicate that there is a significant leaching effect of lignin, but no change in cellulose content. Soluble polysaccharides, the main component of hemicellulose, were converted into pyrolytic volatiles e.g., furfural and furfuryl alcohol. In conclusion, the technology of steam explosion promotes the leaching, decomposition and chemical transformation of amorphous structures on tobacco stems, thus destroying the structure of the cell walls.
蒸汽爆炸对烟草废料结构、化学成分和热解挥发物成分的影响
烟梗是烟叶的重要组成部分,含有大量纤维素,导致烟叶在卷烟中的利用率较低。烟梗预处理技术是提高烟梗利用率的关键。本研究对含水量分别为 2%、5% 和 10%的烟梗进行了汽爆处理。在不同压力和保压时间条件下进行汽爆,研究了烟梗物理结构、化学成分和热解挥发物的变化。结果表明,汽爆对纤维素和低阶多糖晶体的结晶结构影响微乎其微,而对氯化钾有明显影响。蒸汽爆炸破坏了烟草茎秆上的无定形结构,从而增加了比表面积。化学成分和热解挥发物的含量表明,木质素有明显的浸出作用,但纤维素含量没有变化。半纤维素的主要成分可溶性多糖转化为热解挥发物,如糠醛和糠醇。总之,汽爆技术促进了烟草茎秆无定形结构的浸出、分解和化学转化,从而破坏了细胞壁的结构。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Biobased Materials and Bioenergy
Journal of Biobased Materials and Bioenergy 工程技术-材料科学:生物材料
自引率
0.00%
发文量
60
审稿时长
6 months
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