Título:	Energy–environmental nexus in green hydrogen-assisted conversion of second-crop canola to sustainable aviation fuel: toward low-carbon bioenergy systems.
Autoria:	LAMAS, G. C. CARDOSO, A. N. SABAINI, P. S. LUZ, S. M. BORGES, M. dos R. S. COSTA, T. da S. GONZALES, T. da S. MATSUURA, M. I. da S. F. LAVIOLA, B. G. RODRIGUES, T. O. ROUSSET, P. SILVEIRA, E. A.
Afiliação:	GIULIA CRUZ LAMAS, UNIVERSIDADE DE BRASÍLIA; ALEXANDRE NUNES CARDOSO, CNPAE; PRISCILA SEIXAS SABAINI, CNPMA; SANDRA M. LUZ, UNIVERSIDADE DE BRASÍLIA; MARIA DOS REIS SANTOS BORGES, UNIVERSIDADE DE BRASÍLIA; TAINARA DA S. COSTA, UNIVERSIDADE DE BRASÍLIA; THIAGO DA SILVA GONZALES, UNIVERSIDADE DE BRASÍLIA; MARILIA IEDA DA SILVEIRA FOLEGATTI, CNPMA; BRUNO GALVEAS LAVIOLA, CNPAE; THIAGO O. RODRIGUES, INSTITUTO BRASILEIRO DE INFORMAÇÃO EM CIÊNCIA E TECNOLOGIA; PATRICK ROUSSET, CENTRE DE COOPÉRATION INTERNATIONALE EN RECHERCHE AGRONOMIQUE POUR LE DÉVELOPPEMENT; EDGAR A. SILVEIRA, UNIVERSIDADE DE BRASÍLIA.
Ano de publicação:	2026
Referência:	Biomass and Bioenergy, v. 211, n., 109149, 2026.
Conteúdo:	Abstract: Aviation fuel remains the main cost and environmental burden in air transport. This study presents a well-to-wake life cycle assessment (LCA) of canola-based Sustainable Aviation Fuel (SAF) under tropical conditions, based on primary data from Brazilian producers. The analysis encompasses agricultural, pre-processing, and conversion stages via the hydroprocessed esters and fatty acids (HEFA) pathway, revealing the potential of second-crop canola for low-carbon aviation. The study integrates process modeling, renewable hydrogen, and land-use efficiency to capture drivers across stages. The ReCiPe method was applied to 1 MJ of biokerosene as the functional unit. Agriculture dominates GHG emissions (34.2 g CO2 eq. MJ−1), driven primarily by fertilizer production and soil N2O emissions, while the HEFA phase contributes 12.8 g CO2 eq. MJ−1. Substituting fossil hydrogen with photovoltaic- and wind-based hydrogen for in HEFA upgrading reduces emissions by 92 to 96.6%, resulting in up to 19.6% lower total life-cycle emissions. Compared to Jet-A1, SAF decreases fossil depletion by 59% and achieves climate benefits; however, it entails higher burdens in selected non-climate impact categories. Freshwater and marine eutrophication reach approximately 0.01 g P eq. MJ−1 and 0.7 g N eq. MJ−1, respectively, while human toxicity is above 1 g 1,4-DB eq. MJ−1, with the agricultural stage accounting for over 90% of these impacts, particularly fertilizer production and use. Land occupation (0.074 m2 yr MJ−1) is optimized through canola soybean rotation, mitigating deforestation risks. The findings demonstrate canola's strategic role in Brazil's decarbonization policies, highlighting the need for improved fertilizer management and renewable hydrogen integration to advance SAF.
Thesagro:	Biocombustível Agricultura Sustentável
NAL Thesaurus:	Biofuels Air transportation Renewable energy sources Carbon footprint Environmental sustainability Life cycle assessment Canola
Palavras-chave:	Lifecycle emissions Biocombustível para aviação Sustentabilidade ambiental
ISSN:	0961-9534
Digital Object Identifier:	https://doi.org/10.1016/j.biombioe.2026.109149
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPAE)