this post was submitted on 16 Sep 2024
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As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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Leakage at First U.S. Carbon Capture Injection Well Proves that CCS Can’t Work (www.commondreams.org)
submitted 2 months ago by [email protected] to c/[email protected]
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“CCS is a technologically unsound and economically unviable scheme, perpetuated by the fossil fuel industry…”

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[–] [email protected] 3 points 2 months ago

It's more about the how and why.

How: CCS pumps liquefied or pressurized gas into an exhausted oil or saline reservoir. These reservoirs didn't hold pressurized gas before, so it's difficult (if not impossible) to prove they won't leak. In the Decatur case, about 8 kilotons of CO2 and saltwater either found or created a crack in the reservoir, exactly as critics predicted. Locals are worried about groundwater contamination.

Why: CCS is largely unregulated in the US, and the companies interested in it are ones with awful environmental track records -- ADM is no exception there. To claim the 45Q tax credit, they only need to store the CO2 for 3 years. Why would they care about preventing leaks if they already got their payout? Doing shoddy work is in their best interest.

Does this event prove that underground CCS is literally impossible? Of course not. But feasibility isn't a pass/fail test, it's judged by factors like cost and risk. This event proves the approach isn't foolproof and the companies aren't trustworthy. So it's high time we stop acting like they are.