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首页> 外文期刊>RSC Advances >Characterization of biofuel production from hydrothermal treatment of hyperaccumulator waste (Pteris vittata L.) in sub- and supercritical water
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Characterization of biofuel production from hydrothermal treatment of hyperaccumulator waste (Pteris vittata L.) in sub- and supercritical water

机译：超临界水中高累积液废物（PterisVittata L.）水热处理生物燃料生产的特征

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摘要

In this study, hyperaccumulator waste, i.e., Pteris vittata L. was converted into bio-oil, biogas and biochar via sub- and supercritical hydrothermal liquefaction processes. These products were characterized in terms of EI/MS, FTIR, TGA and GC to understand their chemical composition, thermal decomposition, structural properties and high biofuel reactivity. Characterization results revealed that the dominant chemical components in the heavy bio-oil were esters (40.22%), phenols (20.02%), alcohols (10.16%), organic acids (9.07%), nitrogenous compounds (8.83%) and ketones/aldehydes (6.42%), while the light oil was rich with a higher fraction of phenols (54.13%) and nitrogenous compounds (27.04%). Particularly, bio-oils obtained from supercritical conditions contained increased phenolic compounds and reduced oxygenated chemicals such as alcohols, aliphatic acid, ketones and aldehydes, suggesting the improved quality of bio-oil due to the reduction in oxygen contents. Meanwhile, H-2-rich syngas production with the H-2 yield of 38.87% was obtained at 535 degrees C for 20 min, and higher reaction temperature presented a positive influence on H-2 production during Pteris vittata L. liquefaction. Moreover, the remaining biochar product was analyzed to determine whether it could be used as a direct solid fuel or auxiliary fuel. This study provided full exploitation of this feedstock waste in energy and valuable chemical complexes.
机译：在这项研究中，超富集废物，即，蜈蚣草转化为生物油，生物气和生物炭经由子和超临界水热液化过程。这些产物，其特征EI / MS，FTIR，TGA和GC而言，了解他们的化学组成，热分解，结构特性和高的生物燃料的反应性。表征结果显示，在重生物油的主要化学成分为酯（40.22％），酚（20.02％），醇（10.16％），有机酸（9.07％），含氮化合物（8.83％）和酮/醛（6.42％），而轻质油是富含酚的较高分数（54.13％）和含氮化合物（27.04％）。特别地，从超临界条件下获得的生物油包含由于氧含量的减少增加酚类化合物和减少氧化化学物质如醇，脂肪族羧酸，酮和醛，表明生物油的质量的提高。同时，在535℃下得到H-2浓合成气生产用的38.87％的H-2产量20分钟，和较高的反应温度蜈蚣草液化期间呈现在H-2的生产具有正面影响。此外，剩余的生物炭产物进行分析以确定其是否可作为一个直接固体燃料或辅助燃料。这项研究提供了充分利用的能源，有价值的化学络合物此原料的浪费。

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  • 来源
    《RSC Advances》 |2020年第4期|共10页
  • 作者

    Chen Jinbo; Li Songmao;

  • 作者单位

    Chinese Acad Sci Ningbo Inst Mat Technol &

    Engn Ningbo 315201 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol &

    Engn Ningbo 315201 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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