Okolie Jude A, Awotoye Damilola, Tabat Meshach E, Okoye Patrick U, Epelle Emmanuel I, Ogbaga Chukwuma C, Güleç Fatih, Oboirien Bilainu
Gallogly College of Engineering, University of Oklahoma, Norman, OK, USA.
Department of Chemical Engineering, University of llorin, Ilorin, Kwara State, Nigeria.
iScience. 2023 May 24;26(6):106944. doi: 10.1016/j.isci.2023.106944. eCollection 2023 Jun 16.
The aviation sector, a significant greenhouse gas emitter, must lower its emissions to alleviate the climate change impact. Decarbonization can be achieved by converting low-carbon feedstock to sustainable aviation fuel (SAF). This study reviews SAF production pathways like hydroprocessed esters and fatty acids (HEFA), gasification and Fischer-Tropsch Process (GFT), Alcohol to Jet (ATJ), direct sugar to hydrocarbon (DSHC), and fast pyrolysis (FP). Each pathway's advantages, limitations, cost-effectiveness, and environmental impact are detailed, with reaction pathways, feedstock, and catalyst requirements. A multi-criteria decision framework (MCDS) was used to rank the most promising SAF production pathways. The results show the performance ranking order as HEFA > DSHC > FP > ATJ > GFT, assuming equal weight for all criteria.
航空业是主要的温室气体排放源，必须降低其排放量以减轻气候变化影响。通过将低碳原料转化为可持续航空燃料（SAF）可实现脱碳。本研究综述了SAF的生产途径，如加氢处理酯和脂肪酸（HEFA）、气化和费托工艺（GFT）、醇制喷气燃料（ATJ）、直接糖制烃（DSHC）和快速热解（FP）。详细介绍了每种途径的优势、局限性、成本效益和环境影响，以及反应途径、原料和催化剂要求。使用多标准决策框架（MCDS）对最具前景的SAF生产途径进行排名。结果表明，在所有标准权重相等的情况下，性能排名顺序为HEFA > DSHC > FP > ATJ > GFT。
