Title: Exergy-based improvements and waste exergy emissions in sustainable aviation fuels: a pathway to enhanced energy efficiency and environmental sustainability

Authors: Sankarsan Panda; Dharmaprakash Ramasamy; Sendilkumar Subramanian; M. Nalini

Addresses: Acharya Shri Mahapragya Institute of Excellence (ASMIE), Mahapragya Nagar, Asind, Bhilwara, Rajasthan, 311301, India ' Department of Electrical and Electronic Engineering, Panimalar Engineering College, Bangalore Trunk Road, Varadharajapuram, Poonamallee, Chennai, Tamil Nadu 600123, India ' Department of Electrical and Electronic Engineering, S.A. Engineering College, Poonamallee, Avadi Road Veeraraghavapuram, Thiruverkadu, Tamil Nadu 600077, India ' Electronics and Instrumentation Engineering, Sri Sairam Engineering College, Sai Leo Nagar, West Tambaram, Chennai, Tamil Nadu 602109, India

Abstract: The aviation sector will struggle to attain net-zero emissions by 2050. Sustainable aviation fuels (SAF) research is noted. We evaluated the technical performance of SAF production in a Brazilian first- and second-generation integrated sugarcane biorefinery. CO₂ equivalent and renewability exergy indices assessed supply chain sustainability. One study looked at getting public transport to release less carbon dioxide. These studies examine how some of the world's biggest energy-hungry companies and industries can release less CO₂. In a multi-criteria approach, we evaluated biorefinery route performance using ηB and AUEC as supplementary indicators. By 2020, São Paulo and Rio de Janeiro international airports in Brazil may fulfil 10% of fuel demand, according to this estimate. Jet fuel capacity begins at 210 kt/year. For biochemistry, process design employs sugarcane bagasse and straw. The environmental analysis proposes lowering greenhouse gas emissions by 30% compared to fossil-based aircraft fuel in all scenarios.

Keywords: sustainable development goals; SDGs; municipal solid waste; MSW; the thermos electric generator; TEG; internal combustion engine; ICE; life cycle assessment; LCA; sustainable airplane fuels; SAFs; European Green Deal; EGD.

DOI: 10.1504/IJEX.2025.147746

International Journal of Exergy, 2025 Vol.47 No.4, pp.279 - 298

Received: 01 Mar 2025
Accepted: 24 Apr 2025
Published online: 29 Jul 2025 *

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