As it turned out, the Earth's capabilities to assimilate CO 2 are not unlimited, which is clearly manifested in the greenhouse effect. And the ocean becomes more acidic under the influence of excess carbon dioxide.
With emissions still rising, scientists at Columbia's Lamont-Doherty Observatory have set about developing technology to convert CO 2 emissions from power plants and factories into solid rocks.
In an experiment at a power plant in Iceland, carbon dioxide was pumped underground, where it was mineralized into a white, chalky substance. The obtained result has encouraged scientists and now they are studying the possibility of storing CO 2 at the bottom of the oceans off the coast of the United States. Experiments are currently underway with the type of rock that is abundant in the Earth's mantle.
The new technology was tested in Iceland at the Hellisheidy plant. The captured CO 2 was mixed with water and hydrogen sulfide, after which the resulting carbonated mixture was pumped into porous basalt rocks at a depth of 400 to 800 meters.
Basalt is cooled lava containing calcium, iron and magnesium, which react well with CO 2 to form hard carbonate minerals. Within two years, 95% of the gas injected had turned into solid mineral. Previously it was assumed that this process will take 8-12 years.