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A comment on Robotic 'trees' can turn CO2 into concrete. Parent comment

Re:Robotic 'trees' can turn CO2 into concrete by sudhirj on Tuesday September 11, 2018 @11:53AM (#17960827)
Don’t know if this is sarcasm, but burning the wood releases most of the carbon dioxide back into the air. The ash is just the unburnt carbon residue and other leftovers.
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Re:Robotic 'trees' can turn CO2 into concrete by adwn on Tuesday September 11, 2018 @11:53AM (#17960838)
Yes, it was a joke. Sorry for that.
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Re:Robotic 'trees' can turn CO2 into concrete by logfromblammo on Tuesday September 11, 2018 @12:35PM (#17961242)
Jokes aside, you could partially burn it, into charcoal, then grind down the charcoal, soak it in urea, and mix it with soil. The charcoal bits remain stable in soil for quite a long time, and helps retain plant nutrients.
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