Sasol and Topsoe Aim High with Sustainable Aviation Fuel Project

Sasol, the South African chemical and energy giant, in collaboration with the leading international energy firm Topsoe, embarks on a transformative project to spearhead the development of sustainable aviation fuels (SAF). The ambition is a formidable one: to reduce carbon dioxide (CO2) emissions in a sector notoriously difficult to decarbonize – aviation.

The move addresses a pressing issue: aviation accounts for an estimated 2% of global CO2 emissions, a challenge compounded by the fact that traditional airline engines are a considerable source of these emissions. The burgeoning field of SAF offers a beacon of hope. Unlike conventional jet fuel, derived from fossil resources like coal and petroleum, SAF is produced from sustainable sources which might include plant materials or even CO2 captured directly from the air, according to Jan Toschka, head of the Sustainable Aviation Fuels joint venture.

Amidst the thrust for cleaner energy, Sasol and Topsoe's joint venture, announced in June 2023, is poised to exploit innovative technologies and processes that include Sasol's Fischer Tropsch technology and Topsoe's related solutions. This venture capitalizes on the strengths of both companies – Sasol’s prowess in chemical and fuel production and Topsoe’s acumen in research and chemical engineering.

A crucial component is the strict international criteria SAF has to meet, which ensures its chemical and physical properties align closely with traditional jet fuels. This compliance with established standards is vital, facilitating the inclusion of SAF as a blended component in aviation fuel.

The technicality extends further: jet fuels, primarily Jet A and Jet A1, cater to different engine types and adhere to stringent specifications. SAF must similarly fall within these parameters to ensure safety and reliability—currently, seven different pathways for SAF production stand approved by the American Society for Testing and Materials, offering multiple avenues through which SAF can be developed.

The journey ahead is ambitious. Realizing a substantial SAF market involves a collective endeavor, necessitating the cooperation of airplane manufacturers, fuel producers, and airports, entwined in a complex web of industry stakeholders. Toschka remains optimistic, convinced of the joint venture’s potential to significantly curtail the aviation sector's greenhouse emissions, yet he recognizes the patience required for such a holistic transformation.

Harnessing renewable resources and green hydrogen to produce non-fossil fuel-based aviation fuel, the initiative is a potent example of a modern circular economy approach. By shifting carbon usage from underground fossil sources to above-ground renewable feedstocks, the project elucidates a path to lower net emissions.

Sasol and Topsoe's vision is clear: they seek not just to participate in the global dialogue of sustainability but to actively redefine the principles of aviation fuel production, aligning an entire industry with the demands of a low-carbon future. It's a high-flying ambition, and one that could chart the course for aviation's sustainable trajectory.