Archive:000/Carbon capture and storage - Revision history

Elie: Elie moved page Carbon capture and storage to Archive:000/Carbon capture and storage without leaving a redirect: Huge_refactor

2024-10-26T20:29:27Z

Elie moved page Carbon capture and storage to Archive:000/Carbon capture and storage without leaving a redirect: Huge_refactor

← Older revision	Revision as of 15:29, 26 October 2024
(No difference)

Elie at 04:21, 21 May 2023

2023-05-21T04:21:13Z

← Older revision		Revision as of 23:21, 20 May 2023
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	===Earthquakes===		===Earthquakes===
	{{sum\|Possible problem}}		{{sum\|Possible problem}}
	<q>Sequestering of carbon deep underground, through multiple impermeable boundaries, can increase earthquakes, just as with waste water storage from [[fracking]].</q>		<q>Sequestering of carbon deep underground, through multiple impermeable boundaries, can increase earthquakes, just as with waste water storage from [[fracking]].</q> <sup>[rw]</sup>

	External links:		External links:
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	===Sinkholes===		===Sinkholes===
	{{sum\|Possible problem}}		{{sum\|Possible problem}}
	<q>Once carbon dioxide is pumped underground in large quantities (in this case, billions of tons), it displaces natural groundwater pools, causing groundwater to seep elsewhere underground, which greatly increases the risk of sink-holes and water seepage on the surface above.</q>		<q>Once carbon dioxide is pumped underground in large quantities (in this case, billions of tons), it displaces natural groundwater pools, causing groundwater to seep elsewhere underground, which greatly increases the risk of sink-holes and water seepage on the surface above.</q> <sup>[rw]</sup>

	===Rejection===		===Rejection===
	<q>Carbon dioxide is naturally buoyant, and will thus spread around its initial injection point, and seep back out of the earth unless it is injected through one or more impermeable boundaries.</q>		<q>Carbon dioxide is naturally buoyant, and will thus spread around its initial injection point, and seep back out of the earth unless it is injected through one or more impermeable boundaries.</q> <sup>[rw]</sup>

	===Storage capacity===		===Storage capacity===
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	==External links==		==External links==
	This page contains some content copied from RationalWiki's [https://rationalwiki.org/wiki/Clean_coal page on "clean coal"], which has some good info debunking carbon capture.		This page contains some content copied from RationalWiki's [https://rationalwiki.org/wiki/Clean_coal page on "clean coal"], which has some good info debunking carbon capture. [{{light\|Footnote:}} <sup>[rw]</sup>]
			<!-- TODO: just make this a normal footnote, once this page gathers more sources -->

Elie at 22:02, 20 May 2023

2023-05-20T22:02:39Z

← Older revision		Revision as of 17:02, 20 May 2023
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	Carbon capture and storage (CCS, or sometimes CCUS{{x\|carbon capture, utilization and storage}}) is an industrial process where CO<sub>2</sub> emissions are captured and stored deep in the Earth. This is a somewhat questionable approach to reducing [[climate change]].		Carbon capture and storage (CCS, or sometimes CCUS{{x\|carbon capture, utilization and storage}}) is an industrial process where CO<sub>2</sub> emissions are captured and stored deep in the Earth. This is a somewhat questionable approach to reducing [[climate change]].

	==Capture==		{{considerations}} __NOTOC__

			==Capture - types==
	===Direct air capture (DAC)===		===Direct air capture (DAC)===
	Trying to take CO<sub>2</sub> out of the air uses almost as much [[energy]] as you got when you burned the equivalent amount of [[fossil fuels]] in the first place. In other words, it's basically useless. ~~{{x\|~~Any amount of green energy used in DAC, could have been used in any other industry (in place of fossil fuels) and done more to stop climate change.}}		{{sum\|Not viable}}
			Trying to take CO<sub>2</sub> out of the air uses almost as much [[energy]] as you got when you burned the equivalent amount of [[fossil fuels]] in the first place. {{light\|(In other words, it's basically useless.)}} Any amount of green energy used in DAC, could have been used in any other industry (in place of fossil fuels) and done more to stop climate change.
	<!-- TODO: compare to forests: Trees capture (sequester) carbon more efficiently using the sun's energy (photosynthesis). The limiting factor is land, ... -->		<!-- TODO: compare to forests: Trees capture (sequester) carbon more efficiently using the sun's energy (photosynthesis). The limiting factor is land, ... -->
	===Point source capture===		===Point source capture===
	Capturing the emissions at the source ~~- this is viable~~ for coal power plants, natural gas power plants, and some factories. ~~It's not viable~~ for ~~cars or~~ smaller sources.		{{sum\|Viability: Unknown {{rn}} }}
	==Storage==		Capturing the emissions at the source:
	CO<sub>2</sub> is pumped into rocks deep in the ground.{{en}} ~~Hopefully~~ this is ~~stable~~ and ~~won't cause earthquakes or explosions at some~~ point in the ~~future~~.{{rn}}		* Suited for coal power plants, natural gas power plants, and some factories.
	~~<!-- TODO: consider calculating the limits of~~ how much carbon could be stored in ~~a particular part of~~ the ~~earth -~~->		* Not suited for smaller sources like cars & trucks.
	<!-~~- TODO~~: ~~talk about pipelines to transport CO2 - how long are they etc --~~>
			==Storage - considerations==
			CO<sub>2</sub> is pumped into rocks deep in the ground. It reacts with minerals to become ''mineral carbonates'', which are chemically stable. {{en}}

			===Earthquakes===
			{{sum\|Possible problem}}
			<q>Sequestering of carbon deep underground, through multiple impermeable boundaries, can increase earthquakes, just as with waste water storage from [[fracking]].</q>

			External links:
			* [https://www.sciencenews.org/article/pumping-carbon-dioxide-deep-underground-may-trigger-earthquakes?mode=magazine&context=189624 Pumping carbon dioxide deep underground may trigger earthquakes], Science News, Jan 9, 2015

			===Sinkholes===
			{{sum\|Possible problem}}
			<q>Once carbon dioxide is pumped underground in large quantities (in this case, billions of tons), it displaces natural groundwater pools, causing groundwater to seep elsewhere underground, which greatly increases the risk of sink-holes and water seepage on the surface above.</q>

			===Rejection===
			<q>Carbon dioxide is naturally buoyant, and will thus spread around its initial injection point, and seep back out of the earth unless it is injected through one or more impermeable boundaries.</q>

			===Storage capacity===
			{{sum\|Possible problem}}
			This section needs info on ''how much'' carbon could really be stored in the ground - both globally and in terms of some local regions. {{rn}}

			===CO<sub>2</sub> transport===
			{{sum\|Unknown}}
			CO<sub>2</sub> sources are not necessarily near geographic regions suitable for CO<sub>2</sub> storage. Pipelines would need to be built. <sup>[RESEARCH needed - viability]</sup>

			===Utilization===
			{{sum\|Not helpful in the big picture}}
			The "utilization" part of CCUS: The CO<sub>2</sub> is sometimes "used" before being stored. In practice, the only usage is for mining more oil & gas.{{en}}

	==~~Utilization~~==		==External links==
	~~The CO<sub>2<~~/~~sub> is sometimes~~ "~~used~~" ~~before being stored. In practice~~, ~~the only usage is for mining more oil & gas~~.~~{{en}}~~		This page contains some content copied from RationalWiki's [https://rationalwiki.org/wiki/Clean_coal page on "clean coal"], which has some good info debunking carbon capture.

Elie: /* Utilization */

2023-03-29T04:24:22Z

Utilization

← Older revision		Revision as of 23:24, 28 March 2023
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	==Utilization==		==Utilization==
	The CO<sub>2</sub> is sometimes "used" before being stored. In practice, the only usage is for mining more oil & gas.		The CO<sub>2</sub> is sometimes "used" before being stored. In practice, the only usage is for mining more oil & gas.{{en}}

Elie: Created page with "Carbon capture and storage (CCS, or sometimes CCUS{{x|carbon capture, utilization and storage}}) is an industrial process where CO₂ emissions are captured and stored deep in the Earth. This is a somewhat questionable approach to reducing climate change. ==Capture== ===Direct air capture (DAC)=== Trying to take CO₂ out of the air uses almost as much energy as you got when you burned the equivalent amount of fossil fuels in the first plac..."

2023-03-29T04:07:55Z

Created page with "Carbon capture and storage (CCS, or sometimes CCUS{{x|carbon capture, utilization and storage}}) is an industrial process where CO2 emissions are captured and stored deep in the Earth. This is a somewhat questionable approach to reducing climate change. ==Capture== ===Direct air capture (DAC)=== Trying to take CO2 out of the air uses almost as much energy as you got when you burned the equivalent amount of fossil fuels in the first plac..."

New page

Carbon capture and storage (CCS, or sometimes CCUS{{x|carbon capture, utilization and storage}}) is an industrial process where CO2 emissions are captured and stored deep in the Earth. This is a somewhat questionable approach to reducing [[climate change]].

==Capture==
===Direct air capture (DAC)===
Trying to take CO2 out of the air uses almost as much [[energy]] as you got when you burned the equivalent amount of [[fossil fuels]] in the first place. In other words, it's basically useless. {{x|Any amount of green energy used in DAC, could have been used in any other industry (in place of fossil fuels) and done more to stop climate change.}}

===Point source capture===
Capturing the emissions at the source - this is viable for coal power plants, natural gas power plants, and some factories. It's not viable for cars or smaller sources.
==Storage==
CO2 is pumped into rocks deep in the ground.{{en}} Hopefully this is stable and won't cause earthquakes or explosions at some point in the future.{{rn}}



==Utilization==
The CO2 is sometimes "used" before being stored. In practice, the only usage is for mining more oil & gas.