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Iceland scientists turn CO2 into Stone under CarbFix Project

Iceland scientists turn CO2 into Stone under CarbFix Project
11 June 2016 Current Affairs: Scientists working in Iceland found a technique to capture and store the greenhouse gas carbon dioxide (CO2) in deep underground by turning it into rock. The research was published in the journal Science on 10 June 2016.

The technique will provide a safer, faster way to sequester CO2 and limit global warming. And it was identified it as a potentially significant way to combat climate change.

This method of the speedy carbonation could be a viable way to store CO2 underground permanently and without risk of leakage.

Scientists from Columbia University's Lamont-Doherty Earth Observatory and other institutions tested the technique as part of a pilot program called the CarbFix project. It was launched in 2012 at the Hellisheidi power plant in Iceland.

The Scientists injected 220 tons of CO2 into layers of basalt between 
400 and 800 meters below the surface. They also added extra water to react with the gas to form a key driver of mineral reactions, carbonic acid.It triggered a reaction that rapidly forms new carbonate minerals, potentially locking up the gas forever.

Within two years, 95 percent of the carbon injected into the basalt below the plant had solidified into stone. But the project, dubbed CarbFix, offers a ray of hope to fight the climate change by capturing and storing CO2 from power plants.

The process requires a significant amount of water 25 tons for every ton of CO2 which will become a hurdle in some parts of the world. The technique has to clear such high hurdles to become commercially viable.

 


December 2016 Current affairs
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November 2016 Current affairs
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October 2016 Current affairs
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September 2016 Current affairs
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August 2016 Current affairs
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