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A comment on Direct conversion of CO2 to solid carbon by Gallium-based liquid metals. Parent comment

Re:Direct conversion of CO2 to solid carbon by Gallium-based... by ars on Tuesday January 18, 2022 @10:21PM (#29989552)
So use that energy directly. Why burn carbon, release CO2, capture the CO2, and use the sun to turn it back into carbon?
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Re:Direct conversion of CO2 to solid carbon by Gallium-based... by HWR_14 on Tuesday January 18, 2022 @11:58PM (#29990136)
It could be far more efficient than using batteries. Not round trip total energy efficient, but moving around carbon based fuel, refueling vehicles, energy density and cost to produce and retrofit generators
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Re:Direct conversion of CO2 to solid carbon by Gallium-based... by dqpb on Tuesday January 18, 2022 @10:48PM (#29989746)
> So use that energy directly

This would use that energy directly. To sequester carbon.

> why burn carbon

I didn’t say anything about burning carbon.

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Re:Direct conversion of CO2 to solid carbon by Gallium-based... by MagnumOpus on Wednesday January 19, 2022 @10:30AM (#29994868)
This tech can only sequester CO2 without the presence of O2. Where does CO2 occur without O2? In the exhaust of power plants/engines/heaters that burn hydrocarbons.

If you didn't say anything about burning carbon, you weren't paying attention.

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Re:Direct conversion of CO2 to solid carbon by Gallium-based... by dqpb on Thursday January 20, 2022 @12:54PM (#30012216)
> This tech can only sequester CO2 without the presence of O2. Where does CO2 occur without O2?

Here is a system for collecting CO2 from ambient air and discharging a stream of pure CO2:

https://news.mit.edu/2019/mit-engineers-develop-new-way-remo...

> If you didn't say anything about burning carbon, you weren't paying attention.

Wrong.

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