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As one of the world’s first carbon storage projects into basalt formations, the Wallula Basalt pilot test is providing crucial knowledge regarding the long-term potential to safely and securely store CO2 within deep underground basalt environments. The project has achieved several notable accomplishments:
• The project completed successful injection of nearly 1,000 tons of CO2 into the Grande Ronde basalt formation. Injection was followed by extensive monitoring in order to assess how the injected CO2 responded, moved, and behaved within the surrounding basalt setting.
•The results from the Basalt pilot seismic survey represent the first known success of surface-based imaging of basalt geology as well as the first detailed reconnaissance-level characterization of the Columbia River Basalt Province within the state of Washington.
•The project has successfully injected CO2 into underground lava flows, with the gas then solidifying into a mineral called ankerite in just a couple of years.
originally posted by: TEOTWAWKIAIFF
David Goldberg, a geophysicist at Lamont, has been leading off-shore studies to map basalt reservoirs with the potential to store carbon that would mineralize over time. He has proposed burying CO2 in several sites off the U.S. East Coast about a mile below the seafloor, and he is now working on one of five Department of Energy projects using seismic data to determine how much CO2 could be stored in those and other off-shore reservoirs.
Goldberg's team is also proposing the first test of off-shore basalt storage, a project that would pump 1 million tons of CO2 into basalt off the Pacific Northwest.
"Iceland was a key demonstration. The holy grail is off-shore," Goldberg said. The storage potential in the oceans is immense, and it moves the process away from communities. It also avoids the need for water resources. Where the Iceland project added fresh water to the captured CO2, off-shore projects could mix seawater with purified CO2 to speed up the reaction time.
Kelemen estimates that by speeding up the process, peridotite could be used to store 1 billion tons of CO2 per cubic kilometer of rock per year.
Phys.org, Oct 25, 2016 - Turning CO2 to stone.
The US just got involved. Cleaning the CO2 and sea water is probably the way to go. The demo plant in Canada sucking CO2 out of the air points the low cost way of doing this. Repurpose an oil rig (hey, rig workers still needed!), and start the process... massive amounts of CO2 to the sea floor about to be turned to stone. Keeps the oceans from becoming acidic as well.
[T]hey disposed of 250 tons of carbon dioxide, mixed with water and the other pollutant emitted by Hellisheidi, hydrogen sulfide. They sunk the cocktail 400 to 800 meters (a quarter mile to half a mile) below ground, where it began reacting with the minerals in the basalt and solidifying.