Life cycle assessment of wheat straw lignocellulosic bio-ethanol fuel in a local biorefinery prospective
Life cycle assessment of wheat straw lignocellulosic bio-ethanol fuel in a local biorefinery prospective
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DOI：
10.1016/j.jclepro.2018.05.130
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发表时间：
2018-09
影响因子：
11.1
通讯作者：
A. Zucaro;Annachiara Forte;A. Fierro
中科院分区：
文献类型：
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作者：
A. Zucaro;Annachiara Forte;A. Fierro
采用“从摇篮到车轮”的生命周期分析方法，研究了木质纤维素小麦秸秆（WS）生产生物乙醇（EtOH）及其作为E10（10%EtOH和90%汽油）和E85（85%EtOH和15%汽油）汽车运输燃料的环境影响。本研究的目的是：（i）评估整个WS-EtOH供应链的环境绩效，（ii）确定坎帕尼亚地区（意大利南部）未来生物炼油网络的最佳原料。WS-EtOH系统与化石燃料（汽油乘用车）和类似的生物基生产-使用链进行了比较，以实现EnerBiochem和BioPolis项目的主要目标之一：调查坎帕尼亚地区生物炼油系统的环境盈利能力。从使用剩余原料开始（小麦秸秆）或边际土地的重估（种植专用的多年生巨芦苇或一年生纤维高粱），通过对先进的木质纤维素转化工艺的研究，本工作评估了坎帕尼亚地区生物能源生产的环境可行性。WS-E10环境概况由混合物中的汽油输入驱动，而WS-E85结果显示了作物阶段的相关性。不同混合物和汽油燃料汽车的比较突出了E10混合物几乎所有冲击类别的相似轮廓，几乎与传统车辆重叠。因此，对于E85车辆，生物基系统之间的差异似乎根据原料供应和转化步骤的具体影响而放大。总体而言，纤维高粱-E85系统表现出最差的环境性能，而WS-E85系统的性能最好。
A ″cradle-to-wheel" life cycle analysis was carried out to investigate the environmental profile of bioethanol (EtOH) production from lignocellulosic wheat straw (WS) and its use as transport fuel in E10 (10% of EtOH and 90% of gasoline) and E85 (85% of EtOH and 15% of gasoline) vehicles. The aims of this study were: (i) to evaluate the environmental performance of the whole WS-EtOH supply chain and (ii) to identify the best performing feedstock for a prospective bio-refinery network in Campania Region (Southern Italy). A comparison of WS-EtOH system against the fossil counterpart (gasoline passenger car) and similar bio-based production-use chains was conducted to fulfil one of the main goals of EnerBiochem and BioPoliS projects: investigating the environmental profitability of a bio-refinery system in Campania Region. Starting from the use of residual feedstock (wheat straw) or the revaluation of marginal lands (cultivation of dedicated perennial giant reed or annul fiber sorghum), through the investigation of an advanced lignocellulosic conversion processes, this work assesses the environmental feasibility of bio-energy production in Campania Region.The WS-E10 environmental profile was driven by the gasoline input in the blend, whilst the WS-E85 results showed the relevance of the crop phase. The comparison of the different blends and the gasoline-fuelled car highlighted for E10-blends similar profiles for almost all the impact categories, nearly overlapping with the conventional vehicle. Differently, for E85 vehicles, the differences between the bio-based systems appeared amplified according to the specific impacts of the feedstock supply and the conversion steps. On the whole, Fiber Sorghum-E85 system showed the worst environmental profile whilst WS-E85 entailed the best performance.