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首页> 外文期刊>Environmental Science & Technology >Synergetic Sustainability Enhancement via Utilization of Carbon Dioxide as Carbon Neutral Chemical Feedstock in the Thermo-Chemical Processing of Biomass
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Synergetic Sustainability Enhancement via Utilization of Carbon Dioxide as Carbon Neutral Chemical Feedstock in the Thermo-Chemical Processing of Biomass

机译：通过利用二氧化碳作为生物质热化学工艺中的碳中性化学原料来协同提高可持续性

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摘要

This study investigated the utilization of CO_2 as carbon neutral chemical feedstock in the thermo-chemical processing (i.e., pyrolysis and gasification) of biomass to enhance sustainability via modification of the composition of end products. To justify the universal function of CO_2 in the thermo-chemical process, the biomass experimented on in this work was not limited to ligno-cellulosic biomass; seaweed (i.e., red macroalgae) was used to expand biofuel feedstock beyond terrestrial biomass. Our experimental results validated the achieved enhanced generation of ～200% for H_2 and ～1000% for CO by means of adopting CO_2 in the thermo-chemical process, as compared to the case in N_2. This can be explained by the enhanced thermal cracking of volatile organic carbons (VOCs) evolved from the thermal degradation of biomass and the reaction between CO_2 and VOCs. Considering mass balance under our experimental conditions, we confirmed reaction between CO_2 and VOCs, which was universally observed in pyrolysis of all biomass samples used in this work. Thus, the identified influence of CO_2 in the thermo-chemical process can be directly applied in a variety of research and industrial fields, which would be environmentally desirable.
机译：这项研究调查了在生物质的热化学处理（即热解和气化）中利用CO_2作为碳中性化学原料，以通过改变最终产品的组成来提高可持续性。为了证明CO_2在热化学过程中具有普遍功能，在这项工作中实验的生物质不仅限于木质纤维素生物质；海藻（即红色大型藻类）被用于将生物燃料原料扩展到陆地生物量之外。我们的实验结果验证了与N_2相比，通过在热化学过程中采用CO_2可以实现H_2〜200％和CO〜1000％的增强生成。这可以解释为由生物质的热降解以及CO_2与VOC之间的反应产生的挥发性有机碳（VOC）的热裂解增强。考虑到在我们的实验条件下的质量平衡，我们确认了CO_2和VOC之间的反应，这在这项工作中使用的所有生物质样品的热解过程中普遍观察到。因此，所确定的CO 2在热化学过程中的影响可以直接应用于各种研究和工业领域，这在环境上是合乎需要的。

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  • 来源
    《Environmental Science & Technology》 |2015年第8期|5028-5034|共7页
  • 作者

    Eilhann E. Kwon; Seong-Heon Cho; Sungpyo Kim;

  • 作者单位

    Department of Environment and Energy, Sejong University, Seoul 143-747, South Korea, 209 Neudong-Ro, Gwangjin-Gu, South Korea;

    Department of Environment and Energy, Sejong University, Seoul 143-747, South Korea;

    Department of Environmental Engineering, Korea University, Sejong-City 339-700, South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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