Break‐even price and carbon emissions of carinata‐based sustainable aviation fuel production in the Southeastern United States. Issue 11 (3rd September 2021)

• Record Type: Journal Article
• Authors: Alam, Asiful; Masum, Md Farhad Hossain; Dwivedi, Puneet
• Is Part Of: Global change biology. Volume 13:Issue 11(2021)
• Page Start: 1800
• Page End: 1813
• Publication Date: 2021-09-03
• Subjects: agriculture -- aviation -- bioenergy -- economic analysis -- life cycle assessment -- sustainability; Biomass energy -- Periodicals; Biomass energy -- Environmental aspects -- Periodicals; Energy crops -- Periodicals; 662.88
• DOI: 10.1111/gcbb.12888
• Languages: English
• ISSNs: 1757-1693

Abstract

Abstract: The production of biomass‐based sustainable aviation fuel (SAF) is gaining traction to reduce the carbon footprint of the aviation sector. We performed a techno‐economic analysis to estimate the break‐even price and life cycle carbon emissions of the SAF derived from carinata ( Brassica carinata ) in the Southeastern United States. Carinata has the potential as a feedstock for SAF production in the selected region due to higher yield, low fertilizer use, co‐product generation (animal feed, propane, and naphtha), and compatibility with current farming practices. The system boundary started at the farm and ended when the SAF is delivered to an airport. Without co‐product credit or other subsidies such as Renewable Identification Number (RIN) credit, carinata‐based SAF was more expensive ($0.85 L −1 to $1.28 L −1 ) than conventional aviation fuel ($0.50 L −1 ). With co‐product credit only, the break‐even price ranged from $0.34 L −1 to $0.89 L −1 . With both co‐product and RIN credits, the price ranged from ‐$0.12 to ‐$0.66 L −1 . The total carbon emission was 918.67 g CO2 e L −1 of carinata‐based SAF. This estimate provides 65% relative carbon savings compared with conventional aviation fuel (2618 g CO2 e L −1 ). Sensitivity analysis suggested a 95% probability that relative carbon savings can range from 61% to 68%. Our study indicates that carinata‐based aviation fuel could significantly reduce carbon emissions of the aviation sector. However, current policy support mechanisms should be continued to support manufacturing and distribution in the Southeastern United States. Abstract : Carinata ( Brassica carinata ) is a promising non‐food winter crop for producing sustainable aviation fuel in the SE United States. The use of carinata‐based aviation fuel could save up to 68% of carbon emissions relative to conventional aviation fuel. However, direct financial support is needed (e.g., government subsidies, carbon markets) is needed for promoting carinata production in the region for decreasing the carbon footprint of the aviation sector while ensuring rural prosperity and resilient communities.