According to environmental scientists, if carbon dioxide emissions are not reduced, in the next few decades irreversible climatic changes may occur.
The Swiss startup Climeworks managed to convert the geothermal power plant in Iceland in such a way that, in addition to its main function of providing electricity, it captures CO 2from the air, and then turns it into a solid rock. In this state, it can be millions of years.
Today, it is not enough just to cut carbon dioxide emissions. To avoid the devastating effects of climate change, it is necessary to reduce the global average temperature by about 2 ° C. To do this, it is necessary to capture CO 2 , turn into a solid state and store it somewhere under the ground. This process is called “carbon capture and storage technology”, which has been promoted by Climeworks for many years .
With the help of a special filter made of porous granules, CO 2 , connecting with moisture from the air, delays the particles of matter. After that, the heat from the geothermal power plant releases pure carbon dioxide, which is injected underground under a 700-meter depth. There it reacts with basalt rocks and turns into stone.
While the productivity of Climeworks allows to catch 50 tons of CO 2 per year. However, by 2025 the startup intends to reach higher levels – up to 1% of the world’s carbon dioxide emissions.