The temperature of the earth rises day by day. An annual climate report by NOAA shows that both land and sea temperature has increased with an average rate of 0.08 degrees celsius every 10 years since 1880; however, since few years the average rate has more than twice that rate. CO2 is responsible for global warming.
To reduce the effect of Carbon dioxide, Carbon Capture Technology comes into the picture. There are many methods available to capture carbon. There two ways, either natural or by specifically designed systems.
The first natural way to capture carbon is the photosynthesis process. Planting more trees will capture more carbon dioxide. Soil naturally stores carbon. Some minerals also react with CO2 naturally and turning it from gas to solid. But it takes thousands of years.
Another way to capture carbon is the direct separation from industrial emissions. Collected carbon can be stored in underground or long-life products such as concrete.
Some study also shows Carbon scrubbing process in which carbon is scrubbed from the air with the help of Sodium hydroxide or Calcium hydroxide.
Scientists and engineers have proposed new technologies known as carbon capture and storage (CCS). In this process, carbon dioxide is separated from industrial emissions and compressed. Then it is stored or transported at deep ocean water or sedimentary rocks (saturated with water contains salts).
Electroswing Adsorption system |
A new technique also described by MIT engineers is based on passing air through electrodes. Other technologies work well if the concentration of carbon dioxide is higher. But by this technique carbon can also separate even at low concentration. The electrochemical reaction takes place on the electrode as better charges. This process is more expensive than others.
Recently Tesla and SpaceX CEO Elon Musk announced a $100M winning price for the best Carbon Capturing Technology. He tweeted on 22nd January (2021) he will be “donating $100 million towards a prize for best carbon capture technology.”
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