May 8, 2019
The vast majority of Iceland’s energy comes from geothermal power, so Iceland — which is a pretty small country in the first place — does not contribute much to the planet’s greenhouse gases. But even geothermal power generates some carbon dioxide, and the Icelanders don’t want that entering the atmosphere.
So they are turning it to stone.
According to this article, at one of the country’s steam-powered geothermal turbine plants, CO2 is captured, and then processed so that it turns into water containing dissolved carbon dioxide. The water is then pumped deep underground so that it can react with basaltic rock foundations ans turn into minerals. The CO2 effectively becomes petrified, and is permanently removed from the atmosphere.
Pretty cool. And it may be the start of something big.