Earlier quoted context omitted.
> burn the hydrogen part of them Could you elaborate
I guess Coke. https://en.wikipedia.org/wiki/Coke_(fuel)
How are we getting that out of a tree
Efficient method to capture carbon dioxide from the atmosphere
241–250 of 349 posts
Re: Efficient method to capture carbon dioxide from the atmosphere
#242Well, instead of repeating myself manually, I'll paste in a comment of mine here from a past discussion on carbon capture: It's easy to forget why there is a bit of a challenge to getting C02 out of the air: there's so little of it, comparatively. In order, air is, broadly, made up of the following: Nitrogen: %78.084 Oxygen: %20.946 Argon: %00.934 CO2: %00.042 The stuff is essentially beyond a rounding error - it rea…
I get what you're saying, but couldn't this be used in a place with high concentrations of CO2, like factory chimneys?
That would be “capture it at the point of release”
Re: Efficient method to capture carbon dioxide from the atmosphere
#243Earlier quoted context omitted.
You might think it is silly to do this, but what if carbon emission trading makes this profitable?
That’s like asking what happens if gravity reverses, the answer is irrelevant because the situation is not going to happen.
When a question assumes as part of its premise that something is a good idea, it is no longer a meaningful question.
Re: Efficient method to capture carbon dioxide from the atmosphere
#244Well, instead of repeating myself manually, I'll paste in a comment of mine here from a past discussion on carbon capture: It's easy to forget why there is a bit of a challenge to getting C02 out of the air: there's so little of it, comparatively. In order, air is, broadly, made up of the following: Nitrogen: %78.084 Oxygen: %20.946 Argon: %00.934 CO2: %00.042 The stuff is essentially beyond a rounding error - it rea…
So then, is it really the CO2 that produces the cognitive impairment, or is the CO2 here just the proxy value that we are measuring, and the real reason for the cognitive impairment is low oxygen?
It’s also the metabolic changes in pH. CO2 is a proxy for ph as carbon dioxide acidifies the blood as it dissolves.
Re: Efficient method to capture carbon dioxide from the atmosphere
#245Earlier quoted context omitted.
> stable form Not really, forest fires happen and then a few hundred of years of sequestered CO2 gets released back in an instant. Organic material with oxygen gas floating around is not stable. Sequestering carbon into the ocean might be a better strategy. Not flammable and not subject to stupid capitalism effects around land prices.
The ocean has already absorbed 30% of the CO2 humanity has emitted. It causes issues: ocean acidity rises, which reduces plankton ability to grow. Plankton being the base of the ocean food chain, all ocean life gets impacted. You'd need to find a way to sequester carbon without it leaching in the water. https://marine.copernicus.eu/ocean-climate-portal/ocean-carb...
Random idea: What if we just sequestered it into elemental carbon pellets and let it sink to the bottom of the ocean? It should not react with the water.
Re: Efficient method to capture carbon dioxide from the atmosphere
#246I am not against doing research in this area, please do, it is interesting and likely has many applications but global CO2 removal isn't one of them. Nothing proposed, including this, is within any orders of magnitude of a viable solution. The only solution we have is put less in the air in the first place. This tech looks interesting for transporting CO2 but that doesn't mean it sequesters it and even if sequestrati…
> The only solution we have is put less in the air in the first place That’s not a solution either, because the developing world is not going to stop increasing their CO2 output until they fully industrialize. They’re just not. Feel free to seek reductions where you can, but don’t think of it as a solution because it’s not. The technical problems with CO2 capture are far more solvable than the sociological problems w…
I think they are, but more by accident. They’re going to industrialize with renewables, batteries, EVs and electric everything. It’s inevitable due to economics
Re: Efficient method to capture carbon dioxide from the atmosphere
#247Well, instead of repeating myself manually, I'll paste in a comment of mine here from a past discussion on carbon capture: It's easy to forget why there is a bit of a challenge to getting C02 out of the air: there's so little of it, comparatively. In order, air is, broadly, made up of the following: Nitrogen: %78.084 Oxygen: %20.946 Argon: %00.934 CO2: %00.042 The stuff is essentially beyond a rounding error - it rea…
Indeed. I've always had trouble picturing how to efficiently "unmix the cake" too. CO2 is rare and throughout the whole atmospheric column. What kind of concentration gradient can you get going to meaningfully pull it out from everywhere in human timescales? (Sorry if this nerd-snipes someone stronger with calculus than me.)
Re: Efficient method to capture carbon dioxide from the atmosphere
#248Earlier quoted context omitted.
Ok this sounds like BS, what kind of sensor is being used to get such readings? What do you use?
I used an Awair Element after wondering if Co2 buildup was causing my groggieness in the morning and an ever so slight dull headache. My bedroom was quite small at the time, but I measured the same effect of buildup in a larger bedroom, just the Co2 level took a little longer to reach it's peak. In the small room it took about 45 mins to climb to about 1400 after I closed the door and went to sleep. I'm currently try…
When was it calibrated?
Re: Efficient method to capture carbon dioxide from the atmosphere
#249Sounds like this would be great on a long haul space mission where carbon capture is small scale, but very important!
Re: Efficient method to capture carbon dioxide from the atmosphere
#250I am not against doing research in this area, please do, it is interesting and likely has many applications but global CO2 removal isn't one of them. Nothing proposed, including this, is within any orders of magnitude of a viable solution. The only solution we have is put less in the air in the first place. This tech looks interesting for transporting CO2 but that doesn't mean it sequesters it and even if sequestrati…
> The only solution we have is put less in the air in the first place That’s not a solution either, because the developing world is not going to stop increasing their CO2 output until they fully industrialize. They’re just not. Feel free to seek reductions where you can, but don’t think of it as a solution because it’s not. The technical problems with CO2 capture are far more solvable than the sociological problems w…
Developing world generally has a lot more sunlight, and now very cheap solar energy.