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Bio-oil production from eight selected green landscaping wastes through hydrothermal liquefaction

机译：生物油生产从八个选定的绿化园林绿化浪费通过水热液化

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摘要

This study investigated the potential of eight types of green landscaping waste as feedstock to produce bio-oil through hydrothermal liquefaction (HTL). The eight selected plants differed in terms of botanical classification, morphology, leaf state, and growth habit. Leaves and branches as waste from these plants were separately subjected to HTL in a high-pressure batch reactor at 300 degrees C for 0.5 h. Results indicated the bio-oils and biochars of leaves obviously differed from those of branches in terms of yields and higher heating values (HHVs). However, less difference in yields and HHVs was found for HTL products within the eight leaves even though they were different in composition components such as cellulose, hemicelluloses, and lignin. The same was observed for branches. The average bio-oil yields of the leaves and branches were 33.74 and 43.22 wt%, respectively. The optimal bio-oil yield was 50.44 wt%, which was obtained when Cinnamomum camphora branches were used as feedstock. The average HHVs of light and heavy oils in the leaves were 25.13 and 31.27 MJ kg(-1), respectively. These HHVs were higher than those of light and heavy oils in the branches (21.51 and 28.71 MJ kg(-1), respectively). Among the oil products, the heavy oil derived from Salix alba leaves yielded the optimum HHV (35.63 MJ kg(-1)). The mean HHV of biochar was 24.17 MJ kg(-1), which was considerably higher than that of feedstock (17.21 MJ kg(-1)). Gas chromatography-mass spectrometry and Fourier-transform infrared spectrometry revealed the presence of value-added chemicals, such as phenolics, ketones, esters, acids, and alcohols, in bio-oils. The amounts of alkanes, alkenes, and alkynes in the bio-oils derived from the leaves were higher than those in the bio-oils derived from the branches. These results indicated the feasibility of using different types of green landscaping waste as feedstock to produce bio-oils with high HHV and yield through HTL.
机译：本研究通过水热液化（HTL）研究了八种类型的绿化美化废弃物为原料的潜力，以生产生物油。八个选择的植物在不同植物学分类，形态学，叶的状态，和生长习性的条款。枝叶如从这些植物废物在300℃下分别进行HTL中的高压间歇反应器中0.5小时。结果表明所述生物油和叶的生物炭明显从这些分支中的产率的方面和更高的热值（HHVs）不同。但是，在产率和较少HHVs差异被发现的，即使他们在组合物组分，如纤维素，半纤维素和木质素的不同八个叶内HTL产品。观察到树枝一样。叶子和树枝的平均生物油产率分别为33.74和43.22％（重量），分别。最佳生物油产率为50.44％（重量），当樟树树枝被用作原料，所得到的。的轻质和重质油在叶子平均HHVs分别为25.13和31.27公斤MJ（-1），分别。这些HHVs比那些分支的轻和重的油较高（21.51和28.71公斤MJ（-1），分别地）。间的油的产品，从柳衍生的重油杨叶，得到最佳HHV（35.63公斤MJ（-1））。生物炭的平均HHV为24.17 MJ公斤（-1），这比原料的显着更高（17.21公斤MJ（-1））。气相色谱 - 质谱法和傅里叶变换红外光谱显示的增值化学物质，如酚醛树脂，酮，酯，酸和醇的存在下，在生物油。烷烃，烯烃，以及从树叶得到的生物油炔烃量均较从树枝上得到的生物油高。这些结果表明，使用不同类型的绿化美化废弃物为原料，通过HTL生产生物油具有较高的HHV和产量的可行性。

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  • 来源
    《RSC Advances》 |2016年第18期|共11页
  • 作者

    Cao Leichang; Luo Gang; Zhang Shicheng; Chen Jianmin;

  • 作者单位

    Fudan Univ Dept Environm Sci &

    Engn Shanghai Key Lab Atmospher Particle Pollut &

    Prev Shanghai 200433 Peoples R China;

    Fudan Univ Dept Environm Sci &

    Engn Shanghai Key Lab Atmospher Particle Pollut &

    Prev Shanghai 200433 Peoples R China;

    Fudan Univ Dept Environm Sci &

    Engn Shanghai Key Lab Atmospher Particle Pollut &

    Prev Shanghai 200433 Peoples R China;

    Fudan Univ Dept Environm Sci &

    Engn Shanghai Key Lab Atmospher Particle Pollut &

    Prev Shanghai 200433 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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