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<blockquote data-quote="Umbran" data-source="post: 6920710" data-attributes="member: 177"><p>Note, no matter what the articles sub-headline says, turning CO2 into ethanol - a highly flammable, biodegradable substance - will not in and of itself net a loss of CO2 from the atmosphere long-term. As soon as it burns or degrades, that carbon is re-released. This can capture the carbon, but hen you must *sequester* it for it to net remove CO2 from the air.</p><p></p><p>And, of course, it *takes energy* to make this reaction run. </p><p></p><p>So, this can enable a conversion of solar or wind power into fuel for use elsewhere/elsewhen, effectively allowing your car to run on wind, without messing around with a battery (you know, those batteries are chemically kind of nasty, and recycling them is no picnic), or allowing for energy production when solar output is curtailed by clouds. These are good things, and can help reduce our use of fossil fuels, and limit release of additional carbon. But, you still need the solar or wind (or tidal, or what have you) power source.</p></blockquote><p></p>
[QUOTE="Umbran, post: 6920710, member: 177"] Note, no matter what the articles sub-headline says, turning CO2 into ethanol - a highly flammable, biodegradable substance - will not in and of itself net a loss of CO2 from the atmosphere long-term. As soon as it burns or degrades, that carbon is re-released. This can capture the carbon, but hen you must *sequester* it for it to net remove CO2 from the air. And, of course, it *takes energy* to make this reaction run. So, this can enable a conversion of solar or wind power into fuel for use elsewhere/elsewhen, effectively allowing your car to run on wind, without messing around with a battery (you know, those batteries are chemically kind of nasty, and recycling them is no picnic), or allowing for energy production when solar output is curtailed by clouds. These are good things, and can help reduce our use of fossil fuels, and limit release of additional carbon. But, you still need the solar or wind (or tidal, or what have you) power source. [/QUOTE]
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