In the UK, Green Car Congress reported that a team of researchers at the Hamburg University of Technology (TUHH) has compared the Fischer-Tropsch (FT) and methanol pathways for the production of SAF derived from renewable energy sources. The results, published in an open-access paper in the journal Fuel, show a very high carbon efficiency of the FT pathway (98 to 99%) regarding the total liquid products, while the carbon efficiency regarding kerosene lies between 60 and 77%, according to the report. For the methanol pathway, a higher kerosene carbon efficiency can be achieved (60 to 90%); however, the total product efficiency (74 to 92%) is notably lower, according to the report. The report added that the study revealed that the energy efficiencies of both pathways behave similarly to carbon efficiency, with the methanol pathway benefiting from thermodynamic advantages, leading to higher energy efficiency at equal carbon efficiency.
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