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首页> 外文期刊>Renewable energy >The environmental performance of pretreatment technologies for the bioconversion of lignocellulosic biomass to ethanol
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The environmental performance of pretreatment technologies for the bioconversion of lignocellulosic biomass to ethanol

机译：木质纤维素生物质向乙醇生物转化的预处理技术的环境性能

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摘要

Ethanol production from switchgrass has the potential to reduce life cycle GHG emissions by 77-97% relative to petroleum based fuels. This study examines the environmental performance of the chemical pretreatment process employed during lignocellulosic conversion to ethanol in an effort to minimise the environmental impact of pretreatment processing techniques. The study quantifies the impact of four pretreatment chemical processes employing sodium hydroxide, ammonia, methanol and sulphuric acid on five environmental indicators, in order to identify the pretreatment process with the lowest environmental impact. Using SimaPro life cycle assessment software the emissions output to air, soil and water contributing to the environmental parameters: global warming potential (GWP), eutrophication, acidification, photochemical oxidation demand and marine and human ecotoxicity were assessed.Pretreatment employing methanol exhibited the lowest GWP of the four chemicals analysed, with the highest GWP values observed for sodium hydroxide. In general, emissions output varied significantly between all four pretreatment chemicals when compared using selected environmental parameters. Pretreatment employing methanol was identified as having the lowest environmental. (C) 2019 Published by Elsevier Ltd.
机译：与石油基燃料相比，柳枝switch生产的乙醇有潜力将生命周期内的GHG排放量降低77-97％。这项研究检查了木质纤维素转化为乙醇过程中采用的化学预处理工艺的环境性能，以尽量减少预处理工艺技术对环境的影响。该研究量化了使用氢氧化钠，氨水，甲醇和硫酸的四种预处理化学过程对五个环境指标的影响，以便确定对环境影响最小的预处理过程。使用SimaPro生命周期评估软件评估了排放到空气，土壤和水中的排放物，这些排放物对环境参数产生了影响：全球变暖潜势（GWP），富营养化，酸化，光化学氧化需求以及海洋和人类生态毒性。使用甲醇预处理的GWP最低在分析的四种化学药品中，氢氧化钠的GWP值最高。通常，使用选定的环境参数进行比较时，所有四种预处理化学品之间的排放量差异很大。使用甲醇的预处理被认为具有最低的环境。 （C）2019由Elsevier Ltd.发布

著录项

  • 来源
    《Renewable energy》 |2019年第11期|527-534|共8页
  • 作者

    Smullen Emma; Finnan John; Dowling David; Mulcahy Patricia;

  • 作者单位

    EnviroCore, Inst Technol Carlow, Dept Sci & Hlth, Carlow, Ireland;

    TEAGASC, Crops Environm & Land Use Programme, Oakpk, Carlow, Ireland;

    EnviroCore, Inst Technol Carlow, Dept Sci & Hlth, Carlow, Ireland;

    EnviroCore, Inst Technol Carlow, Dept Sci & Hlth, Carlow, Ireland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    LCA; Switchgrass; Ethanol production; Environmental impact;

    机译：LCA;Switchgrass;乙醇生产;环境影响;

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