Supercritical Carbon Dioxide - Revision history

Eric: Added some more information

2025-09-17T19:07:53Z

Added some more information

← Older revision		Revision as of 19:07, 17 September 2025
Line 32:		Line 32:
	==Desorption of [[Spent Granulated Activated Carbon]] ==		==Desorption of [[Spent Granulated Activated Carbon]] ==
	*As per [https://www.sciencedirect.com/science/article/pii/S0045653524028947 This 2024 Paper in “Chemosphere” Titled “ Regeneration of PFAS-laden granular activated carbon by modified supercritical CO2 extraction” ] sCO2 can be used to desorb [[PFAS]] (also other contaminants, albeit citation needed) from [[Spent Granulated Activated Carbon]]		*As per [https://www.sciencedirect.com/science/article/pii/S0045653524028947 This 2024 Paper in “Chemosphere” Titled “ Regeneration of PFAS-laden granular activated carbon by modified supercritical CO2 extraction” ] sCO2 can be used to desorb [[PFAS]] (also other contaminants, albeit citation needed) from [[Spent Granulated Activated Carbon]]
			**Quote:
			***” With the addition of organic solvents and acid modifiers, the procedure yielded >99% perfluorooctanoic acid (PFOA) desorption after a 60-min treatment in a continuous flow reactor. The mild extraction conditions at T ∼100 °C do not trigger the formation of volatile organic fluorine or changes in GAC sorbent properties. Mechanistically, the high miscibility of co-solvent/scCO2 eliminates diffusion transport limitations, enabling rapid reagent and PFAS transport in a single-phase (gas-like) medium”

	=Internal Links=		=Internal Links=

Eric: Added some more information

2025-09-17T19:06:22Z

Added some more information

← Older revision		Revision as of 19:06, 17 September 2025
Line 29:		Line 29:
	*It has the advantage over [[Butane]] and other similar proposed hydrocarbons in that it is not flammable		*It has the advantage over [[Butane]] and other similar proposed hydrocarbons in that it is not flammable
	*The [[Allam-Fetvedt Cycle]] is a novel Power Generation system utilizing [[Oxy-Fuel Combustion]] in an all Supercritical Carbon Dioxide Atmosphere		*The [[Allam-Fetvedt Cycle]] is a novel Power Generation system utilizing [[Oxy-Fuel Combustion]] in an all Supercritical Carbon Dioxide Atmosphere

			==Desorption of [[Spent Granulated Activated Carbon]] ==
			*As per [https://www.sciencedirect.com/science/article/pii/S0045653524028947 This 2024 Paper in “Chemosphere” Titled “ Regeneration of PFAS-laden granular activated carbon by modified supercritical CO2 extraction” ] sCO2 can be used to desorb [[PFAS]] (also other contaminants, albeit citation needed) from [[Spent Granulated Activated Carbon]]

	=Internal Links=		=Internal Links=

Eric: Minor Clarification

2025-08-12T02:32:09Z

Minor Clarification

← Older revision		Revision as of 02:32, 12 August 2025
Line 26:		Line 26:

	==As a Working Fluid==		==As a Working Fluid==
	*It can be used as a [[Refrigerant]] or as a Working Fluid in a [[Rankine Cycle]] (Although using Hydrocarbons in the [[Organic Rankine Cycle]] may be of more interest		*It can be used as a [[Refrigerant]] , or as a Working Fluid in a [[Rankine Cycle]] (Although using Hydrocarbons in the [[Organic Rankine Cycle]] may be of more interest, pending a proper [[Decision Making Matrix]] or similar investigation as per the relevant [[OSE Specifications]] )
	*It has the advantage over [[Butane]] and other similar proposed hydrocarbons in that it is not flammable		*It has the advantage over [[Butane]] and other similar proposed hydrocarbons in that it is not flammable
	*The [[Allam-Fetvedt Cycle]] is a novel Power Generation system utilizing [[Oxy-Fuel Combustion]] in an all Supercritical Carbon Dioxide Atmosphere		*The [[Allam-Fetvedt Cycle]] is a novel Power Generation system utilizing [[Oxy-Fuel Combustion]] in an all Supercritical Carbon Dioxide Atmosphere

Eric: Minor Clarification

2025-08-12T02:29:22Z

Minor Clarification

← Older revision		Revision as of 02:29, 12 August 2025
Line 14:		Line 14:

	== [[Supercritical Fluid Chromatography]] ==		== [[Supercritical Fluid Chromatography]] ==
	*Can be used for Analytic Chemistry, or in [[Simulated Moving Bed Chromatography]] at an industrial scale		*Can be used for Analytic Chemistry, or in [[Simulated Moving Bed Chromatography]] at an industrial scale for purification/separation of desirable (or in the case of Decaffeination etc, undesirable) Compounds

	== [[Dry Cleaning]] ==		== [[Dry Cleaning]] ==
	*Unlike other solvents sCO2 has virtually no toxicity (short of it being an [[Asphyxiant Hazard]] ) so Disposal/Handling concerns are far less		*Unlike other solvents, sCO2 has virtually no toxicity (short of it being an [[Asphyxiant Hazard]] ) so Disposal/Handling concerns are far less

	==Extraction==		==Extraction==

Eric: Added some more links under the "External Links" section

2022-09-05T00:12:11Z

Added some more links under the "External Links" section

← Older revision		Revision as of 00:12, 5 September 2022
Line 42:		Line 42:
	*[https://www.youtube.com/watch?v=TvmM6qa2a90 A Video by the YouTube Channel "Applied Science" Titled "Caffeine extraction from green coffee with supercritical CO2" ] ( ''' ~10 Minute Watch''' )		*[https://www.youtube.com/watch?v=TvmM6qa2a90 A Video by the YouTube Channel "Applied Science" Titled "Caffeine extraction from green coffee with supercritical CO2" ] ( ''' ~10 Minute Watch''' )
	*[https://www.youtube.com/watch?v=UxAjlmaUNzs A Video by the YouTube Channel "Applied Science" Titled "Supercritical CO2 extraction of cinnamon, coffee, and vanilla with [[dry ice]] " ] ( ''' ~6 Minute Watch''' )		*[https://www.youtube.com/watch?v=UxAjlmaUNzs A Video by the YouTube Channel "Applied Science" Titled "Supercritical CO2 extraction of cinnamon, coffee, and vanilla with [[dry ice]] " ] ( ''' ~6 Minute Watch''' )
	*[https://www.youtube.com/watch?v=2wkgBPk0DWg A Video by the YouTube Channel "Applied Science" Titled "Custom supercritical CO2 chamber with easy-to-use lid clamp" ]		*[https://www.youtube.com/watch?v=2wkgBPk0DWg A Video by the YouTube Channel "Applied Science" Titled "Custom supercritical CO2 chamber with easy-to-use lid clamp" ] ( ''' ~7 Minute Watch''' )
			*[https://www.youtube.com/watch?v=70znrkiHfpA A Video by the YouTube Channel "Applied Science" Titled "Effect of long-term high pressure CO2 on acrylic" ] ( '''~2 Minute Watch''' )
			**Seems the Acrylic is not viable for long term / non-educational demo use
	*[https://www.youtube.com/watch?v=Oo-iS6q-djo A Video by the YouTube Channel "Vidya-mitra' Titled "Supercritical fluid extraction: principle and applications (FT)" ] (A 30 Minute Presentation by Dr. Richa Singh from the Indian Council of Agricultural Research-National Dairy Research Institute (ICAR-NDRI) )		*[https://www.youtube.com/watch?v=Oo-iS6q-djo A Video by the YouTube Channel "Vidya-mitra' Titled "Supercritical fluid extraction: principle and applications (FT)" ] (A 30 Minute Presentation by Dr. Richa Singh from the Indian Council of Agricultural Research-National Dairy Research Institute (ICAR-NDRI) )

Eric: Added some more links under the "External Links" section

2022-09-05T00:09:30Z

Added some more links under the "External Links" section

← Older revision		Revision as of 00:09, 5 September 2022
Line 43:		Line 43:
	*[https://www.youtube.com/watch?v=UxAjlmaUNzs A Video by the YouTube Channel "Applied Science" Titled "Supercritical CO2 extraction of cinnamon, coffee, and vanilla with [[dry ice]] " ] ( ''' ~6 Minute Watch''' )		*[https://www.youtube.com/watch?v=UxAjlmaUNzs A Video by the YouTube Channel "Applied Science" Titled "Supercritical CO2 extraction of cinnamon, coffee, and vanilla with [[dry ice]] " ] ( ''' ~6 Minute Watch''' )
	*[https://www.youtube.com/watch?v=2wkgBPk0DWg A Video by the YouTube Channel "Applied Science" Titled "Custom supercritical CO2 chamber with easy-to-use lid clamp" ]		*[https://www.youtube.com/watch?v=2wkgBPk0DWg A Video by the YouTube Channel "Applied Science" Titled "Custom supercritical CO2 chamber with easy-to-use lid clamp" ]
			*[https://www.youtube.com/watch?v=Oo-iS6q-djo A Video by the YouTube Channel "Vidya-mitra' Titled "Supercritical fluid extraction: principle and applications (FT)" ] (A 30 Minute Presentation by Dr. Richa Singh from the Indian Council of Agricultural Research-National Dairy Research Institute (ICAR-NDRI) )

Eric: Added some more links under the "External Links" section

2022-09-05T00:03:25Z

Added some more links under the "External Links" section

← Older revision		Revision as of 00:03, 5 September 2022
Line 38:		Line 38:
	*[https://en.wikipedia.org/wiki/Supercritical_carbon_dioxide The Wikipedia Page on Supercritical Carbon Dioxide]		*[https://en.wikipedia.org/wiki/Supercritical_carbon_dioxide The Wikipedia Page on Supercritical Carbon Dioxide]
	*[https://www.sciencedirect.com/science/article/abs/pii/S0896844612000642 A 2012 Paper Titled "Supercritical fluid simulated moving bed chromatography for the separation of ethyl linoleate and ethyl oleate" ]		*[https://www.sciencedirect.com/science/article/abs/pii/S0896844612000642 A 2012 Paper Titled "Supercritical fluid simulated moving bed chromatography for the separation of ethyl linoleate and ethyl oleate" ]
			*[https://www.youtube.com/watch?v=AipBc6yBOF4 A Video by the YouTube Channel "extraktLAB" Titled "How To Do Supercritical CO2 Extraction" ] ( '''~2 Minute Watch''' )
			*[https://www.youtube.com/watch?v=-gCTKteN5Y4 A Video by the YouTube Channel "Applied Science" Titled "A close look at supercritical carbon dioxide CO2" ] ( '''~8 Minute Watch''' )
			*[https://www.youtube.com/watch?v=TvmM6qa2a90 A Video by the YouTube Channel "Applied Science" Titled "Caffeine extraction from green coffee with supercritical CO2" ] ( ''' ~10 Minute Watch''' )
			*[https://www.youtube.com/watch?v=UxAjlmaUNzs A Video by the YouTube Channel "Applied Science" Titled "Supercritical CO2 extraction of cinnamon, coffee, and vanilla with [[dry ice]] " ] ( ''' ~6 Minute Watch''' )
			*[https://www.youtube.com/watch?v=2wkgBPk0DWg A Video by the YouTube Channel "Applied Science" Titled "Custom supercritical CO2 chamber with easy-to-use lid clamp" ]

Eric: Minor Text Formatting Fix

2022-09-04T23:57:26Z

Minor Text Formatting Fix

← Older revision		Revision as of 23:57, 4 September 2022
Line 20:		Line 20:

	==Extraction==		==Extraction==
	*[[Supercritical fluid extraction]] is very common in the [[Essential Oil]] Industry (for [[Fragrances]] / [[Food Additives]] ) ( <s>And also in the Cannabis Industry for High Value High Purity Oils/Resins/Waxes</s>		*[[Supercritical fluid extraction]] is very common in the [[Essential Oil]] Industry (for [[Fragrances]] / [[Food Additives]] ) ( <s>And also in the Cannabis Industry for High Value High Purity Oils/Resins/Waxes</s> )
	*It is effective, and also has little risk of contamination since simply depressurizing the mixture separates out the CO2 (which can then be collected and recycled)		*It is effective, and also has little risk of contamination since simply depressurizing the mixture separates out the CO2 (which can then be collected and recycled)
	*Main issue is initial cost of equipment		*Main issue is initial cost of equipment

Eric: Added some more links under the "External Links" section

2022-09-04T23:31:15Z

Added some more links under the "External Links" section

← Older revision		Revision as of 23:31, 4 September 2022
Line 37:		Line 37:
	=External Links=		=External Links=
	*[https://en.wikipedia.org/wiki/Supercritical_carbon_dioxide The Wikipedia Page on Supercritical Carbon Dioxide]		*[https://en.wikipedia.org/wiki/Supercritical_carbon_dioxide The Wikipedia Page on Supercritical Carbon Dioxide]
			*[https://www.sciencedirect.com/science/article/abs/pii/S0896844612000642 A 2012 Paper Titled "Supercritical fluid simulated moving bed chromatography for the separation of ethyl linoleate and ethyl oleate" ]

Eric: Added some more information

2022-09-04T23:28:40Z

Added some more information

← Older revision		Revision as of 23:28, 4 September 2022
Line 28:		Line 28:
	*It can be used as a [[Refrigerant]] or as a Working Fluid in a [[Rankine Cycle]] (Although using Hydrocarbons in the [[Organic Rankine Cycle]] may be of more interest		*It can be used as a [[Refrigerant]] or as a Working Fluid in a [[Rankine Cycle]] (Although using Hydrocarbons in the [[Organic Rankine Cycle]] may be of more interest
	*It has the advantage over [[Butane]] and other similar proposed hydrocarbons in that it is not flammable		*It has the advantage over [[Butane]] and other similar proposed hydrocarbons in that it is not flammable
			*The [[Allam-Fetvedt Cycle]] is a novel Power Generation system utilizing [[Oxy-Fuel Combustion]] in an all Supercritical Carbon Dioxide Atmosphere

	=Internal Links=		=Internal Links=