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A comment on Could Carbon Dioxide Be Turned into Jet Fuel?.

Re:Could Carbon Dioxide Be Turned into Jet Fuel? by imtringued on Friday December 25, 2020 @08:01PM (#25540450)
How do you capture CO2 from a jet? Do you store it onboard? Direct air capture seems incredibly inefficient.
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Re:Could Carbon Dioxide Be Turned into Jet Fuel? by sokoloff on Friday December 25, 2020 @09:23PM (#25540822)
You don't. You take yesterday's CO2 from the atmosphere, turn it into today's fuel, and emit it as tomorrow's CO2 into the atmosphere. Then repeat the cycle continuously.

If you were successful in capturing the CO2 from the jet and taking it to the point of landing, the airplane would get (much!) heavier as it flew rather than lighter.

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