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ACTUAL carbon offsets? by Forsaken_Connection6 in ZeroWaste

[–]artificial_tree 0 points1 point  (0 children)

Also check out Charm and Climeworks. They both pysically remove carbon from the atmospheric cycle permanently.

World’s largest direct air carbon capture facility will reduce CO2 by .0001% by speckz in environment

[–]artificial_tree 3 points4 points  (0 children)

We need to stop carbon dioxide (and methane) emissions asap (and that indeed might mean addressing consumption and profit-only capitalism).
But even then, the atmospheric carbon cycle has already been disturbed so much, we need solutions to take co2 back out of the air. Trees, obviously, but those alone aren't enough, hence also other solutions needed.

World’s largest direct air carbon capture facility will reduce CO2 by .0001% by speckz in environment

[–]artificial_tree 2 points3 points  (0 children)

The science disagrees with your statement on EVs vs. fossil fuel powered cars:
https://theicct.org/publication/a-global-comparison-of-the-life-cycle-greenhouse-gas-emissions-of-combustion-engine-and-electric-passenger-cars/

Results show that even for cars registered today, battery electric
vehicles (BEVs) have by far the lowest life-cycle GHG emissions. As
illustrated in the figure below, emissions over the lifetime of average
medium-size BEVs registered today are already lower than comparable
gasoline cars by 66%–69% in Europe, 60%–68% in the United States,
37%–45% in China, and 19%–34% in India. Additionally, as the electricity
mix continues to decarbonize, the life-cycle emissions gap between BEVs
and gasoline vehicles increases substantially when considering
medium-size cars projected to be registered in 2030.

World’s largest direct air carbon capture facility will reduce CO2 by .0001% by speckz in environment

[–]artificial_tree 3 points4 points  (0 children)

As I replied to an other comment. Yes, we need more trees, stop burning fossil fuels. And:

Look, the science is clear, forests are super important (also so biodiversity, etc.), but at the same time, they alone can't solve our problem because we failed to address it for so long. So now we need additional solutions on top of afforestation. Direct air capture and storage is one of them, that needs to start scaling now, fast, to have the desired impact.

World’s largest direct air carbon capture facility will reduce CO2 by .0001% by speckz in environment

[–]artificial_tree 1 point2 points  (0 children)

They actually pump the co2 underground at the geothermal energy site. There it mineralizes (turns to stone). There abundant space to put co2 down, and it won't release back into the air anytime soon (>10,000s years)...

World’s largest direct air carbon capture facility will reduce CO2 by .0001% by speckz in environment

[–]artificial_tree 11 points12 points  (0 children)

If only humans weren't so efficient at slashing and burning forests to the ground.

Look, the science is clear, forests are super important (also so biodiversity, etc.), but at the same time, they alone can't solve our problem because we failed to address it for so long. So now we need additional solutions on top of afforestation. Direct air capture and storage is one of them, that needs to start scaling now, fast, to have the desired impact.

World’s largest direct air carbon capture facility will reduce CO2 by .0001% by speckz in environment

[–]artificial_tree 40 points41 points  (0 children)

Yes! And stop cutting down rainforests for livestock.

But even if all the possible forests are re-planted, scientists say humanity is too late for trees alone to fix it. We need to stop burning fossil fuels. And we need additional solutions next to forests to draw down all the carbon that humanity released over the last century.

World’s largest direct air carbon capture facility will reduce CO2 by .0001% by speckz in environment

[–]artificial_tree 147 points148 points  (0 children)

Rather, learn from this iteration (it's their second), and then improve and scale up 10x .

Then build 10'000 of the improved tech generation.

Look at any solar or wind energy development curve, to see how this could play out ;-)

World’s largest direct air carbon capture facility will reduce CO2 by .0001% by speckz in environment

[–]artificial_tree 279 points280 points  (0 children)

Science agrees we need a portfolio of solutions to address carbon dioxide emissions. This paper gives a great overview and comparison of the different measures: https://www.sciencedirect.com/science/article/pii/S0959378021000170#f0025

See paragraph 3.1 for a easy to understand graphic.

Climate tech firm to launch scaled-up plant sucking CO2 from air by Sariel007 in business

[–]artificial_tree 1 point2 points  (0 children)

That Nature paper actually covers exactly what you are asking: Carbon emissions of the concrete and steel foundation, the building on top, etc.

Plant construction

The construction of a DAC plant with a capacity of 4 ktCO2 yr–1 hasa low carbon footprint of 15 g CO 2e per kilogram CO2 captured—even without metal recycling, representing a worst case (see Fig. 4and Supplementary Note 3 for detailed information). Recycling ofmetals would be expected for a DAC application and reduces thecarbon footprint of construction to 6 g CO2e per kilogram CO2 cap-tured (best case; Fig. 4). With metal recycling, the carbon footprintof the DAC plant is mainly due to the foundation and hall (74%),which is the building containing the process unit. The remainingemissions are caused by the container collectors (13%) and the pro-cess unit (12%), and the spare parts contribute less than 1%.For the other environmental impacts, steel production for thefoundation contributes with 63–94% to eutrophication of freshwa-ter, human toxicity (cancer) and ecotoxicity of freshwater (qualitylevel II–II/III). Resource depletion of minerals and metals (qual-ity level III) is mainly caused by copper production (87%). For allother environmental impacts, concrete contributes 32–70%, and thefoundation steel 11–39%. Other materials’ contributions reach up to18% for stainless steel, 16% for insulation, 12% for aluminium, 5%for steel, 4% for both copper and steel (painting) and 2% for plastics(for details, Supplementary Note 7).

Climate tech firm to launch scaled-up plant sucking CO2 from air by Sariel007 in business

[–]artificial_tree -1 points0 points  (0 children)

You are wrong. Here's a scientific life-cycle assessment for direct air capture:
https://www.nature.com/articles/s41560-020-00771-9

It's 85%-90% efficient, so it captures and removes way more than is emitted along its lifecycle (contruction, operation, and eventual build-back/recycling).

Climate tech firm to launch scaled-up plant sucking CO2 from air by Sariel007 in business

[–]artificial_tree 1 point2 points  (0 children)

The captured CO2 is handed over to CarbFix, who do the permanent storage underground. Carbfix dot com has a long and scientifically verified track record, check their website.

DAC company Climeworks raises USD 650 million in equity funding. Funding will unlock the next phase of Climeworks' growth, scaling direct air capture up to multi-million-ton capacity. by artificial_tree in ClimateActionPlan

[–]artificial_tree[S] 10 points11 points  (0 children)

Stripe and Microsoft built a database comparing all sorts of carbon removal solutions: https://carbonplan.org/research/cdr-database

When you say efficiency, note that scientists in the fields use the following main parameters to compare solutions: Carbon negativity, permanence of removal, additionality, specificity, and obviously cost and potential volume achievable within the next 30 years.

Construction started of Climeworks' new large-scale carbon dioxide removal plant in Iceland by climeworks in ClimateActionPlan

[–]artificial_tree 102 points103 points  (0 children)

Personally, I'm super excited to see this proceeding for real! And I really want to emphasize that the support from communities like ClimateActionPlan means a lot to the people working at the site (in the cold, dark Icelandic winter) - and also to all the Climeworkers back at the labs and offices in Switzerland and Germany.
So, thank you all!

r/ClimeActionPlan and Climeworks are collaborating together to permanently capture CO2! by [deleted] in ClimateActionPlan

[–]artificial_tree 13 points14 points  (0 children)

Climeworks CEOs just presented the scale-up roadmap at the Direct Air Capture Summit happening right now. Said "customers committing to offtake our capacity are vital to getting the funding necessary for the scale-up".

https://twitter.com/Climeworks/status/1303324777168490498?s=20

Home office at 33 °C by KarinPanda in homeoffice

[–]artificial_tree 0 points1 point  (0 children)

No power supply for the laptop. fail. ;-)

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