Earlier quoted context omitted.
If the purpose is carbon sequestration, you'll have to include the cost of storing that wood. Indefinitely. Won't be cheap.
You'll also need to store it in a way that does not release the wood's CO2 back to the atmosphere by biodegradation.
Robotic 'trees' can turn CO2 into concrete
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Re: Robotic 'trees' can turn CO2 into concrete
#22Earlier quoted context omitted.
You'll also need to store it in a way that does not release the wood's CO2 back to the atmosphere by biodegradation.
If you turn it into charcoal you keep most of the carbon locked up in a non-biodegradable form.
Re: Robotic 'trees' can turn CO2 into concrete
#23Every time one of these articles come up I wonder about the price per tonne of CO2 removed by simply growing wood and not burning it. I'm not really sure what that price is, but it seems to be around $20-$40 per tonne? Does anyone have a more accurate number?
"Solutions" don't have to be perfect forever. They just need to work long enough till better solutions are discovered.
Re: Robotic 'trees' can turn CO2 into concrete
#24Every time one of these articles come up I wonder about the price per tonne of CO2 removed by simply growing wood and not burning it. I'm not really sure what that price is, but it seems to be around $20-$40 per tonne? Does anyone have a more accurate number?
Re: Robotic 'trees' can turn CO2 into concrete
#25Every time one of these articles come up I wonder about the price per tonne of CO2 removed by simply growing wood and not burning it. I'm not really sure what that price is, but it seems to be around $20-$40 per tonne? Does anyone have a more accurate number?
I think all these comments about wood eventually releasing the carbon back into the atmosphere are missing the point. We don't need to capture it forever, we just need to get the ratio between carbon output and input under control in the next couple of decades. That should give us enough time to come up with longer term and sustainable ways of our planet... until we encounter the next problem, and so on. "Solutions"…
Re: Robotic 'trees' can turn CO2 into concrete
#26Earlier quoted context omitted.
If the purpose is carbon sequestration, you'll have to include the cost of storing that wood. Indefinitely. Won't be cheap.
Doesn’t a forest tie up the carbon in live trees? A mature forest will be more or less carbon neural but a certain amount of carbon won’t be available to the atmosphere.
If you want to get that out of the atmosphere, it's not good enough to grow trees today because in 50-100 years (or whenever a tree dies) you're right back where we are today.
[0] https://www.nationalgeographic.com/science/phenomena/2016/01...
Re: Robotic 'trees' can turn CO2 into concrete
#27Re: Robotic 'trees' can turn CO2 into concrete
#28Earlier quoted context omitted.
I think all these comments about wood eventually releasing the carbon back into the atmosphere are missing the point. We don't need to capture it forever, we just need to get the ratio between carbon output and input under control in the next couple of decades. That should give us enough time to come up with longer term and sustainable ways of our planet... until we encounter the next problem, and so on. "Solutions"…
You could also just bury it. That’s effectively putting coal back into the ground.
Re: Robotic 'trees' can turn CO2 into concrete
#29Every time one of these articles come up I wonder about the price per tonne of CO2 removed by simply growing wood and not burning it. I'm not really sure what that price is, but it seems to be around $20-$40 per tonne? Does anyone have a more accurate number?
There's got to be something that grows faster, and is easier to sequestrate, than trees. Bamboo, maybe? Seaweed? Algae? Dry it off in salt pans and dump it in the deep, cold ocean? That's just dumping more carbon into one of our natural sinks, I think, rather than trying to create a new artificial sink. Even just using it as fertilizer has got to be an improvement over using inorganic fertilizers.
Re: Robotic 'trees' can turn CO2 into concrete
#30Earlier quoted context omitted.
If you turn it into charcoal you keep most of the carbon locked up in a non-biodegradable form.
If you use it to build homes you provide shelter for more people.