Sugarcane: The Sweet Path to Sustainable Aviation Fuel
The future of sustainable aviation fuel is a topic that sparks curiosity and debate. As we strive to replace fossil carbon without compromising food security or biodiversity, one crop stands out as a promising solution: sugarcane. At the ARC Research Hub for Engineering Plants to Replace Fossil Carbon, we're dedicated to finding innovative ways to harness this potential.
Our mission is bold: to create economically viable, renewable aviation fuel on a massive scale. Plants are the current best source for renewable carbon, and sugarcane, in particular, holds the key to success. It's the only crop currently produced in the quantities required for this purpose.
While other options like algae and canola have their merits, they face significant challenges. Algal systems, for instance, are expensive, and without a high-value co-product, they won't be cost-effective. Canola, despite being a viable option internationally, faces a scale issue. Its yield is relatively low, requiring vast amounts of land to produce enough fuel to replace jet fuel. This is a critical consideration, as land use directly impacts sustainability.
Sugarcane, however, shines in this regard. It is highly productive and cultivated on a relatively small proportion of land. Its small footprint and exceptional productivity make it the ideal choice for large-scale production. Our research at the Hub focuses on enhancing plant biomass conversion into fuel. We're exploring genetic modifications in rice, sorghum, and sugarcane to increase the proportion of biomass that can be converted without sacrificing yield.
Rice serves as our model system due to its genetic manipulability. We identify promising changes in rice and then test them in sorghum, sugarcane's closest domesticated relative. If successful, we transfer the most promising alternatives to sugarcane, despite its more complex genetics. This tiered approach saves time and resources, increasing our chances of success.
Australia and Queensland, in particular, are uniquely positioned to lead this transformation. We have a well-established sugarcane industry, strong research capabilities, and global partnerships that can accelerate innovation. Additionally, Australians fly more frequently than most, creating a high demand for sustainable aviation fuel within the domestic market. If we can produce sustainable fuel commercially, as we're on track to do, the world will quickly adopt it. The Hub's goal is to find ways to reduce costs further, making the investment even more compelling.
The challenge is clear: breeding crops with a high proportion of convertible biomass without sacrificing yield. It's a complex puzzle, but one that is worth solving. Sugarcane, with its productivity, sustainability, and scalability, is the sweet spot we're aiming for. If we succeed, Australia will not only be part of the solution but will lead the way in sustainable aviation fuel.
