Life cycle energy and greenhouse gas analysis for algae-derived biodiesel
Life cycle energy and greenhouse gas analysis for algae-derived biodiesel
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DOI：
10.1039/c1ee01791h
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发表时间：
2011-09
影响因子：
32.5
通讯作者：
Tara Shirvani;Xiaoyu Yan;Oliver Richard Inderwildi;P. Edwards;David A. King
中科院分区：
文献类型：
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作者：
Tara Shirvani;Xiaoyu Yan;Oliver Richard Inderwildi;P. Edwards;David A. King
寻找替代燃料以减轻我们对以化石为基础的运输燃料的依赖是由于传统石油资源的枯竭和人为温室气体(GHG)排放导致的迫在眉睫的气候变化。通过生命周期方法，我们评估一旦相应地管理过程的能源和碳强度，藻类生物柴油生产是否可以成为一种可行的燃料来源。目前，藻类生物柴油的能源密集度是传统柴油的2.5倍，几乎相当于油页岩柴油的高燃料循环能源使用量。来自先进生物质的生物柴油可以实现其固有的环境优势，即减少温室气体排放，只要生产链的每一步都得到充分优化和脱碳。这包括智能联产利用、电网和热网的脱碳，以及化肥、运输和建筑材料的间接能源需求。只有考虑到所有这些因素，才能降低供热和电力成本，并充分减少温室气体排放。
The search for alternative fuels to alleviate our dependency on fossil-based transport fuels is driven by depleting conventional oil resources and looming climate change induced by anthropogenic greenhouse gas (GHG) emissions. Through a lifecycle approach, we evaluate whether algal biodiesel production can be a viable fuel source once the energy and carbon intensity of the process is managed accordingly. Currently, algae biodiesel production is 2.5 times as energy intensive as conventional diesel and nearly equivalent to the high fuel-cycle energy use of oil shale diesel. Biodiesel from advanced biomass can realise its inherent environmental advantages of GHG emissions reduction once every step of the production chain is fully optimized and decarbonised. This includes smart co-product utilization, decarbonisation of the electricity and heat grids as well as indirect energy requirements for fertilizer, transport and building material. Only if all these factors are taken into account is the cost of heat and electricity reduced, and GHG emissions fully mitigated.