Multi-criteria Analysis of Sustainable Aviation Fuel Technologies: Integrating Environmental, Economic, Social, and Technical Criteria along with Stakeholder Perspectives to Compare Fast Pyrolysis, Hydrothermal Liquefaction, and HEFA Pathways

The aviation sector, responsible for approximately 2% of global anthropogenic greenhouse gas emissions, is projected to grow 4-6 times by 2050, conflicting with the European Union’s Green Deal target of achieving net-zero emissions by the same year. While aircraft electrification offers a promising solution, its application is largely limited to...

Life Cycle and Cost Analysis of Synthetic Kerosene in Aviation

Given the enduring issues of human-induced climate change, the appeal of strategies aimed at reducing greenhouse gases has never been greater. CO2 is the most concerning greenhouse gas due to the large quantity already emitted into the atmosphere and the ongoing excessive emissions from anthropogenic activities. The transportation sector...

In-Flight Nitrogen Oxide Measurements for Different Settings of a Lean Burn Engine

Aviation is an important contributor to anthropogenic climate change. As indirect greenhouse gases, nitrogen oxides (NOx = NO + NO2) add to the Effective Radiative Forcing (ERF) induced by aircraft emissions. This work addresses a better understanding of emission mitigation by investigating dependencies between engine parameters and emitted...

Diagnosis of Challenges and Uncertainties for Implementation of Sustainable Aviation Fuel (SAF) in Colombia, and Recommendations to Move Forward

This article reviews the current scenario and the main uncertainties and challenges associated with implementing Sustainable Aviation Fuel (SAF) in Colombia, from which it determines the possible certified technologies under the ASTM D 7566 standard as well as co-processing technologies contemplated within the ASTM D 1655 standard, more suitable...

Environmental impacts in the civil aviation sector: Current state and guidance

The aviation sector contributes to environmental problems like climate change, resource depletion, and air pollution. We perform a systematic literature review of life cycle assessment studies to map the environmental impacts in the sector and provide methodological recommendations. The sector is divided into cross-cutting systems, namely...

European Union's biomass availability for Sustainable Aviation Fuel production and potential GHG emissions reduction in the aviation sector: An analysis using GIS tools for 2030

To be the first carbon-neutral continent by 2050, the European Union (EU) should decarbonize the aviation sector. According to the ReFuel initiative, sustainable aviation fuels (SAFs) are crucial in reducing carbon emissions from the sector. The Clean Sky 2 program by the EU commission, shortlisted four promising technologies - hydro...

Stakeholder preferences regarding sustainable aviation fuel technologies: Stakeholders’ preferences regarding different SAF technology pathways, in order to comply with the proposed SAF blending mandate by the European Commission

The airline industry is growing and so are its emissions. To diminish the airline industry's increasing emissions, carbon-neutral growth for this industry is adopted. Sustainable aviation fuels (SAF) are considered an important aspect to comply with these goals and a large upscale of the SAF industry is needed. Therefore, the European Commission...

An exploratory evaluation of business perspectives on sustainable aviation fuels: Research on business perspective factors influencing the adoption of innovative sustainable alternatives in the aviation industry

One of the major emitters of CO2 is the aviation industry which keeps growing. A solution to reduce carbon emissions is to focus on Sustainable Aviation Fuels (SAF) such as biofuels or synthetic fuels or to focus on sustainable alternative technologies such as electric-powered or hydrogen-powered aircraft. A literature review is conducted that...

Comparison of Future Aviation Fuels to Minimize the Climate Impact of Commercial Aircraft

Sustainable aviation fuel (SAF) and liquid hydrogen are currently being studied to replace kerosene in commercial aviation to reduce global warming. In this study, the question is how do the airplane design variables change when minimizing the global warming impact of aircraft powered by SAF or LH2? Secondly, how do these aircraft compare in...

Mitigating carbon emissions through sustainable aviation fuels: costs and potential

In general, the certified pathways for the production of sustainable aviation fuels (SAFs) are still far from being competitive with fossil kerosene, although they have the potential to reduce greenhouse gas (GHG) emissions. However, the mitigation costs related to SAFs and how they compete with the carbon credits market remain unclear. The...