Techno-Economic and Environmental Assessment of Biomass Gasification and Fischer-Tropsch Synthesis Integrated to Sugarcane Biorefineries
Techno-Economic and Environmental Assessment of Biomass Gasification and Fischer-Tropsch Synthesis Integrated to Sugarcane Biorefineries
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DOI：
10.3390/en13174576
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发表时间：
2020-09-01
期刊：
影响因子：
3.2
通讯作者：
Cavalett, Otavio
中科院分区：
文献类型：
--
作者：
Bressanin, Jessica Marcon;Klein, Bruno Colling;Cavalett, Otavio
大规模部署生物化学和热化学途径生产先进生物燃料被视为减缓气候变化的一个关键选择。本研究通过将生物质气化和费托合成集成到一个典型的甘蔗蒸馏厂，解决了先进液体生物燃料生产替代品的技术经济和环境方面的问题。热化学途径包括转化传统甘蔗（甘蔗渣和秸秆）的剩余木质纤维素部分，以及桉树和能源甘蔗作为新兴的木质纤维素生物质选择。这项工作促进了一个综合框架来模拟工艺替代方案的质量和能量平衡，并结合了基于生命周期观点的技术经济分析和可持续性评估方法。结果表明，与化石燃料相比，综合生物精炼厂可减少85-95%的温室气体排放，高于典型甘蔗生物精炼厂的预期。当考虑到可避免的耕地排放时，生物精炼厂处理能源甘蔗的方案受到青睐，但经济效益较低。热化学过程可以利用与典型的甘蔗工厂和新的生物燃料政策（例如，RenovaBio）的整合，以减轻与实施新生物燃料技术相关的一些风险。
Large-scale deployment of both biochemical and thermochemical routes for advanced biofuels production is seen as a key climate change mitigation option. This study addresses techno-economic and environmental aspects of advanced liquid biofuels production alternatives via biomass gasification and Fischer-Tropsch synthesis integrated to a typical sugarcane distillery. The thermochemical route comprises the conversion of the residual lignocellulosic fraction of conventional sugarcane (bagasse and straw), together with eucalyptus and energy-cane as emerging lignocellulosic biomass options. This work promotes an integrated framework to simulate the mass and energy balances of process alternatives and incorporates techno-economic analyses and sustainability assessment methods based on a life-cycle perspective. Results show that integrated biorefineries provide greenhouse gas emission reduction between 85-95% compared to the fossil equivalent, higher than that expected from a typical sugarcane biorefinery. When considering avoided emissions by cultivated area, biorefinery scenarios processing energy-cane are favored, however at lower economic performance. Thermochemical processes may take advantage of the integration with the typical sugarcane mills and novel biofuels policies (e.g., RenovaBio) to mitigate some of the risks linked to the implementation of new biofuel technologies.