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How Much Energy Would It Take to Pull Carbon Dioxide out of the Air?(www.wired.com)

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AHemlocksLie@lemmy.zip
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But if it’s used as fuel, wouldn’t that typically return the CO2? Just about all fuels are burned, which creates the CO2, and you have to make sure the energy you use to make and transport the fuel is clean, too.

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3volver@lemmy.world
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Yes, but overall it would be net negative carbon dioxide emissions.

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AHemlocksLie@lemmy.zip
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How does it stay net negative? Carbon goes into the fuel, which is good, but doesn’t like all of it come back out when burned for fuel? My understanding is that these fuels can only really achieve neutrality, and that assumes clean energy used to make the fuel.

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