Scientists Discover Rock That Can Absorb Carbon Dioxide Emissions Directly From the Air
The team found that when the rock, known as Peridotite, comes into contact with carbon dioxide it converts the gas into harmless minerals such as calcite. They have also worked out a way to ’supercharge’ the naturally occurring process to a million times its normal speed to grow enough of the mineral to permanently store 2 billion or more tons of carbon dioxide annually. This equates to an astonishing 7 per cent of the total global carbon emissions from human activity each year.
- » See also: Best Counterargument to Price on Carbon Hurting Jobs?
- » Get CleanTechnica by RSS or sign up by email.
Peridotite is found mostly in the gulf state of Oman, and is also the most commonly occurring rock in the Earth’s mantle. For now, the team, based at the University’s Lamont-Doherty Earth Observatory, calculate that it would be too expensive to mine the rock and transport it to greenhouse gas emitting plants in heavily polluting countries such as the US, China and India.
However, since Oman is conveniently located near to a major oil-producing region, rocks found on the surface could still be used to work their magic. According to the team’s co-leader, geochemist Juerg Matter, “To be near all that oil and gas infrastructure is not a bad thing.”
At this stage, although the team have filed a preliminary patent for their process to kick-start the carbon storage process of peridotite, which involves drilling down and injecting the rock with heated water containing pressurised CO2, they say that more research is needed before the technology can be used on a commericial scale. If you’re interested in more information, team’s study will appear in the November 11 edition of the Proceedings of the Natural Academy of Sciences.
Image Credit - Fr Antunes via flickr.com on a Creative Commons license
Since when did India become a major pollution contributor?
Um…this reaction is pretty well known. Calcite is calcium carbonate (lime,limestone, marble). If you mix it with water you get calcium bicarbonate. Other scientists are currently working to do the same thing with the lime in eggshells. I guess the story is the supercharging of the process?
Thank you, so much! As a Ph.D student at Stanford, I was so glad to find this article! This will definitely help me on my research for “Global Change.”
Thanks!
Best Regards,
Elise Lesborne
elesborne@stanford.edu
Also, please email me about any other websites or resources that has to do with ‘Global Change.’
Best,
Elise Lesborne
elesborne@stanford.edu
Periodotite is also predominent in a metamophosed
mineral called serpintinite which is the California state rock, found in fault zones aroud the pacific rim.
Serpentinite is associated with asbestos.
I wonder if non gem grade periodotite can be found and adinistered in a powderized form into CO2 rich ocean waters and what byproduct chemical effcts would be present?
If it can process in a better way to control CO2 Emission into the Atmosphere, it’ll help to decrease some sort of Global Warming, as presently, Fossil Fuel burning is producing 5-6 Gigatons of CO2 anually into the Atmosphere…