Launch HN: Prometheus (YC W19) – Remove CO2 from Air and Turn It into Gasoline

Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by rmcginnis on Tuesday May 07, 2019 @08:33AM (#19848777)

The energy content of the gasoline is less than the energy used to make it (only 50-60% efficiency), but the CO2 released is the same as the CO2 used. So the energy efficiency is low, but the net CO2 emission is still zero.

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Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by Zenbit_UX on Tuesday May 07, 2019 @09:01AM (#19848944)

Is your device small enough that it could be placed to filter the exhaust emissions from a fuel burning car and reinsert the newly created gasoline into its fuel tank?

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Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by shawabawa3 on Tuesday May 07, 2019 @11:22AM (#19850331)

powered by what? It would only make sense if there was a carbon free cheap power source you could use to charge it - if you just take it from the car battery you're wasting fuel as it's only ~50% efficient

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