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Which of the following best describes the ‘Carbon Capture and Storage (CCS)’?
  • a)
    A method of converting CO2 into a useful product for industrial purposes.
  • b)
    A process of removing CO2 emissions directly from the atmosphere and storing them underground.
  • c)
    A process that captures CO2 emissions from large point sources and stores them underground.
  • d)
    A process of capturing CO2 emissions from vehicles and releasing them into the ocean.
Correct answer is option 'C'. Can you explain this answer?
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Which of the following best describes the ‘Carbon Capture and St...
Germany recently announced that it would allow carbon capture and off-shore storage for certain industrial sectors.
About is Carbon Capture and Storage (CCS):
  • CCS refers to a host of different technologies that capture COemissions from large point sources like refineries or power plants and trap them beneath the Earth
  • Notably, CCS is different from Carbon dioxide Removal (CDR), where CO2 is removed from the atmosphere.
  • It’s a three-step processinvolvingcapturing the carbon dioxide produced by power generation or industrial activity, such as steel or cement making; transporting it; and then storing it deep underground.
  • CCS involves three different techniques of capturing carbon, including post-combustionpre-combustion, and oxyfuel combustion.
  • In post-combustion, CO2 is removed after the fossil fuel has been burnt. By using a chemical solventCO2 is separated from the exhaust or ‘flue’ gases and then captured.
  • Pre-combustion involves removing CO2 before burning the fossil fuel. First, the fossil fuel is partially burned in a ‘gasifier’ to form synthetic gasCO2 can be captured from this relatively pure exhaust stream. The method also generates hydrogen, which is separated and can be used as fuel.
  • In oxyfuel combustion, the fossil fuel is burnt with almost pure oxygen, which produces CO2 and water vapour. The water is condensed through cooling, and CO2 is separated and captured
  • Out of the three methods, oxyfuel combustion is the most efficient, but the oxygen burning process needs a lot of energy.
  • After capture, CO2 is compressed into a liquid state and transported to suitable storage sites. 
  • Possible storage sites for carbon emissions include saline aquifers or depleted oil and gas reservoirs.
  • There are also only a few operational CCS projects across the world, even though the technology has been pushed for decades.
  • According to the International Energy Agency (IEA), there were 40 operational CCS projects in 2023, which captured more than 45 metric tonnes (Mt) of CO2 annually.
Hence option c is the correct answer.
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Which of the following best describes the ‘Carbon Capture and Storage (CCS)’?a)A method of converting CO2into a useful product for industrial purposes.b)A process of removing CO2emissions directly from the atmosphere and storing them underground.c)A process that captures CO2emissions from large point sources and stores them underground.d)A process of capturing CO2emissions from vehicles and releasing them into the ocean.Correct answer is option 'C'. Can you explain this answer?
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