Carbon cycle - Revision history

RichardWSmith: /* Geological carbon cycle */

2024-08-14T20:18:19Z

Geological carbon cycle

← Older revision		Revision as of 21:18, 14 August 2024
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	Over geological time scales carbon moves slowly in and out of the Earth's crust to the atmosphere / biosphere. This can be done by several processes.		Over geological time scales carbon moves slowly in and out of the Earth's crust to the atmosphere / biosphere. This can be done by several processes.

	~~......~~ Things that move carbon into the ground.		===Things that move carbon into the ground.===
	* Vast amounts of plant matter can be buried to form peat, and if buried deeper form coal. This happened largely during the Carboniferous portion of Earth's history.		* Vast amounts of plant matter can be buried to form peat, and if buried deeper form coal. This happened largely during the Carboniferous portion of Earth's history.
	* Large amounts of bio matter can land on sea floors. I buried, it can eventually be turned into oil over millions of years.		* Large amounts of bio matter can land on sea floors. I buried, it can eventually be turned into oil over millions of years.
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	* Carbon can be pulled down into the mantle by plate tectonics.		* Carbon can be pulled down into the mantle by plate tectonics.

	~~.......~~ Things that move carbon into the biosphere / atmosphere.		===Things that move carbon into the biosphere / atmosphere.===
	* Carbon can be released from the Earth by volcanoes.		* Carbon can be released from the Earth by volcanoes.
	* Carbon can be released from carbonate rocks by weathering.		* Carbon can be released from carbonate rocks by weathering.

RichardWSmith: /* Geological carbon cycle */

2024-08-14T20:15:57Z

Geological carbon cycle

← Older revision		Revision as of 21:15, 14 August 2024
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	* Carbon can be released from the Earth by volcanoes.		* Carbon can be released from the Earth by volcanoes.
	* Carbon can be released from carbonate rocks by weathering.		* Carbon can be released from carbonate rocks by weathering.
	* Peat, natural gas, coal, and oil can be dug up and burnt.		* Peat, natural gas, coal, and oil can be dug up and burnt. (This is a fast process.)

	==Drawing down carbon in terraforming==		==Drawing down carbon in terraforming==

RichardWSmith: /* Geological carbon cycle */

2024-08-14T20:14:51Z

Geological carbon cycle

← Older revision		Revision as of 21:14, 14 August 2024
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	==Geological carbon cycle==		==Geological carbon cycle==
	Over geological time scales carbon moves slowly in and out of the Earth's crust to the atmosphere / biosphere. This can be done by several processes.		Over geological time scales carbon moves slowly in and out of the Earth's crust to the atmosphere / biosphere. This can be done by several processes.

	...... Things that move carbon into the ground.		...... Things that move carbon into the ground.
	* Vast amounts of plant matter can be buried to form peat, and if buried deeper form coal. This happened largely during the Carboniferous portion of Earth's history.		* Vast amounts of plant matter can be buried to form peat, and if buried deeper form coal. This happened largely during the Carboniferous portion of Earth's history.

RichardWSmith: /* Geological carbon cycle */ Improved organization.

2024-08-14T20:14:29Z

Geological carbon cycle: Improved organization.

← Older revision		Revision as of 21:14, 14 August 2024
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	==Geological carbon cycle==		==Geological carbon cycle==
	Over geological time scales carbon moves slowly in and out of the Earth's crust to the atmosphere / biosphere. This can be done by several processes.		Over geological time scales carbon moves slowly in and out of the Earth's crust to the atmosphere / biosphere. This can be done by several processes.
			...... Things that move carbon into the ground.
	* Vast amounts of plant matter can be buried to form peat, and if buried deeper form coal. This happened largely during the Carboniferous portion of Earth's history.		* Vast amounts of plant matter can be buried to form peat, and if buried deeper form coal. This happened largely during the Carboniferous portion of Earth's history.
	* Large amounts of bio matter can land on sea floors. I buried, it can eventually be turned into oil over millions of years.		* Large amounts of bio matter can land on sea floors. I buried, it can eventually be turned into oil over millions of years.
Line 25:		Line 26:
	* Carbon can be pulled down into the mantle by plate tectonics.		* Carbon can be pulled down into the mantle by plate tectonics.

			....... Things that move carbon into the biosphere / atmosphere.
	* Carbon can be released from the Earth by volcanoes.		* Carbon can be released from the Earth by volcanoes.
	* Carbon can be released from carbonate rocks by weathering.		* Carbon can be released from carbonate rocks by weathering.

RichardWSmith: /* Drawing down carbon in terraforming */ fixed typo.

2024-08-14T20:11:16Z

Drawing down carbon in terraforming: fixed typo.

← Older revision		Revision as of 21:11, 14 August 2024
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	==Drawing down carbon in terraforming==		==Drawing down carbon in terraforming==
	When terraforming Mars, we will want to increase the amount of carbon dioxide in the Martian atmosphere, as this will increase the green house warming. A partially terraformed Mars, will be better for humans and other life. But if we wish to make Mars habitable by people without air masks, the level of carbon dioxide must be reduced to trace levels. This will cool Mars which is exactly what we don't want. To make this up, we might use [[Super Greenhouse ~~Gasses~~]] or [[Greenhouse nano-particles]].		When terraforming Mars, we will want to increase the amount of carbon dioxide in the Martian atmosphere, as this will increase the green house warming. A partially terraformed Mars, will be better for humans and other life. But if we wish to make Mars habitable by people without air masks, the level of carbon dioxide must be reduced to trace levels. This will cool Mars which is exactly what we don't want. To make this up, we might use [[Super Greenhouse Gases]] or [[Greenhouse nano-particles]].

	Moving carbon in the air (as carbon dioxide) into the crust (as say, peat or coal) is a process that would take millions of years. Humans can speed this by cutting down forests, and burying them deep, or moving trillions of tonnes of wood outside of the biosphere (say to the top of Olympus Mons where it won't rot being above most of the atmosphere). Even so, the rate of draw down of carbon dioxide from the air will take tens of thousands of years. It takes time to grow forests and harvest them many times.		Moving carbon in the air (as carbon dioxide) into the crust (as say, peat or coal) is a process that would take millions of years. Humans can speed this by cutting down forests, and burying them deep, or moving trillions of tonnes of wood outside of the biosphere (say to the top of Olympus Mons where it won't rot being above most of the atmosphere). Even so, the rate of draw down of carbon dioxide from the air will take tens of thousands of years. It takes time to grow forests and harvest them many times.

RichardWSmith: Added links.

2024-08-14T20:10:27Z

Added links.

← Older revision		Revision as of 21:10, 14 August 2024
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	==Drawing down carbon in terraforming==		==Drawing down carbon in terraforming==
	When terraforming Mars, we will want to increase the amount of carbon dioxide in the Martian atmosphere, as this will increase the green house warming. A partially terraformed Mars, will be better for humans and other life. But if we wish to make Mars habitable by people without air masks, the level of carbon dioxide must be reduced to trace levels. This will cool Mars which is exactly what we don't want.		When terraforming Mars, we will want to increase the amount of carbon dioxide in the Martian atmosphere, as this will increase the green house warming. A partially terraformed Mars, will be better for humans and other life. But if we wish to make Mars habitable by people without air masks, the level of carbon dioxide must be reduced to trace levels. This will cool Mars which is exactly what we don't want. To make this up, we might use [[Super Greenhouse Gasses]] or [[Greenhouse nano-particles]].

	Moving carbon in the air (as carbon dioxide) into the crust (as say, peat or coal) is a process that would take millions of years. Humans can speed this by cutting down forests, and burying them deep, or moving trillions of tonnes of wood outside of the biosphere (say to the top of Olympus Mons where it won't rot being above most of the atmosphere). Even so, the rate of draw down of carbon dioxide from the air will take tens of thousands of years. It takes time to grow forests and harvest them many times.		Moving carbon in the air (as carbon dioxide) into the crust (as say, peat or coal) is a process that would take millions of years. Humans can speed this by cutting down forests, and burying them deep, or moving trillions of tonnes of wood outside of the biosphere (say to the top of Olympus Mons where it won't rot being above most of the atmosphere). Even so, the rate of draw down of carbon dioxide from the air will take tens of thousands of years. It takes time to grow forests and harvest them many times.

RichardWSmith: Discussed fast and slow carbon cycles and added drawing down carbon in terraforming.

2024-08-14T20:08:15Z

Discussed fast and slow carbon cycles and added drawing down carbon in terraforming.

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 The natural '''Carbon Cycle''' describes the way of energetic interaction of [[plants]] and [[animals]] (or [[human]]s).
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 Carbon is stored in the [[Air|settlement atmosphere]] as [[Carbon dioxide|CO2]].  The breathable limit is about 9000 ppm (0,9% by mass), but the amount present in the Earth atmosphere is between 300 and 400 ppm (0,03% by mass).  Additional carbon is stored in plants and animals as carbohydrates, or other hydrocarbons.  It can also be stored as methane, or extracted chemically as pure carbon.  Stored carbon helps stabilize the cycle by adding a damping/storage mechanism to the system.
 [[Category: Life Support Systems]]

Michel Lamontagne at 16:14, 29 October 2019

2019-10-29T16:14:40Z

← Older revision		Revision as of 17:14, 29 October 2019
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	The photo synthesis basically creates glucose from CO<sub>2</sub> and water:		The photo synthesis basically creates glucose from CO<sub>2</sub> and water:
	6 CO<sub>2</sub> + 6 H<sub>2</sub>O → C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>		6 CO<sub>2</sub> + 6 H<sub>2</sub>O → C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>


	The settlers basically metabolize the glucose and release CO<sub>2</sub> and water:		The settlers basically metabolize the glucose and release CO<sub>2</sub> and water:
	C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> → 6 CO<sub>2</sub> + 6 H<sub>2</sub>O		C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> → 6 CO<sub>2</sub> + 6 H<sub>2</sub>O
			Carbon is stored in the [[Air\|settlement atmosphere]] as [[Carbon dioxide\|CO2]]. The breathable limit is about 9000 ppm (0,9% by mass), but the amount present in the Earth atmosphere is between 300 and 400 ppm (0,03% by mass). Additional carbon is stored in plants and animals as carbohydrates, or other hydrocarbons. It can also be stored as methane, or extracted chemically as pure carbon. Stored carbon helps stabilize the cycle by adding a damping/storage mechanism to the system.


	[[Category: Life Support Systems]]		[[Category: Life Support Systems]]

Jburk at 08:52, 18 December 2018

2018-12-18T08:52:19Z

← Older revision		Revision as of 09:52, 18 December 2018
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	[[Category: ~~Human Considerations]]~~		[[Category: Life Support Systems]]
	~~[[Category: Greenhouse]]~~
	~~[[Category: Agriculture~~]]

Rfc: formulae added

2015-10-30T21:02:09Z

formulae added

← Older revision		Revision as of 22:02, 30 October 2015
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	The natural '''Carbon Cycle''' describes the way of energetic interaction of [[plants]] and [[animals]].		The natural '''Carbon Cycle''' describes the way of energetic interaction of [[plants]] and [[animals]] (or [[human]]s).

	[[Image:carbon_cycle_simplified.png\|thumb\|right\|300px\|The Carbon Cycle (simplified)]]		[[Image:carbon_cycle_simplified.png\|thumb\|right\|300px\|The Carbon Cycle (simplified)]]

	The [[CO2\|CO<sub>2</sub>]] is consumed by the [[food]] plants. This is part of the carbon cycle, assumed that all food is grown by food plants in the [[colony]]. All [[hydrocarbon]] intake is exhaled as CO<sub>2</sub> after digestion and metabolizing. Exactly the same amount of CO<sub>2</sub> is inhaled by the food plants and metabolized to hydrocarbons. The carbon is neither created nor destroyed anywhere in the cycle.		The [[CO2\|CO<sub>2</sub>]] is consumed by the [[food]] plants. This is part of the carbon cycle, assumed that all food is grown by food plants in the [[colony]]. All [[hydrocarbon]] intake is exhaled as CO<sub>2</sub> after digestion and metabolizing. Exactly the same amount of CO<sub>2</sub> is inhaled by the food plants and metabolized to hydrocarbons. The carbon is neither created nor destroyed anywhere in the cycle.


			The photo synthesis basically creates glucose from CO<sub>2</sub> and water:
			6 CO<sub>2</sub> + 6 H<sub>2</sub>O → C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>


			The settlers basically metabolize the glucose and release CO<sub>2</sub> and water:
			C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> → 6 CO<sub>2</sub> + 6 H<sub>2</sub>O