say u got lots of palm oil or used cooking oil.

methanol could come from h20 + co2
CO + H2O → CO2 + H2
CO + 2 H2 → CH3OH
or u can get the h2 from methane, ch4..

so add methanol
u get fame biodiesel and hefa-spk saf.
and glycerol. glycerol can be used as bunker fuel? and confirm that will emit co2..
glycerol+acetone=solketal? maybe fame biodiesel antifreeze additive? is there any motivation to use fame biodiesel as an aviation fuel? maybe solketal can help? maybe for turboprops only?

i mean. really. can u use fame+solketal instead of hefa-spk? as part of a blend maybe?