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Which of the following is/are not the methods of carbon sequestration?
1. Direct Air Capture
2. Graphene Production from carbon dioxide
3. Geological capture
4. Biological sequestration
Select the correct answer using the code given below.
- a)2 only
- b)1 and 3 only
- c)1, 2 and 4 only
- d)All the above are methods of carbon sequestration.
Correct answer is option 'D'. Can you explain this answer?
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Which of the following is/are not the methods of carbon sequestration?...
- Carbon sequestration is the process of capturing, securing and storing carbon dioxide from the atmosphere. The idea is to stabilize carbon in solid and dissolved forms so that it doesn’t cause the atmosphere to warm. The process shows tremendous promise for reducing the human “carbon footprint.” There are two main types of carbon sequestration: biological and geological. Types of Carbon sequestration are given below. x Biological Sequestration:
- Oceans: Oceans absorb roughly 25 percent of carbon dioxide emitted from human activities annually. Carbon goes in both directions in the ocean. When carbon dioxide releases into the atmosphere from the ocean, it creates what is called a positive atmospheric flux. A negative flux refers to the ocean absorbing carbon dioxide. Think of these fluxes as an inhale and an exhale, where the net effect of these opposing directions determines the overall effect. o Soil: Carbon is sequestered in soil by plants through photosynthesis and can be stored as soil organic carbon (SOC). Agroecosystems can degrade and deplete the SOC levels but this carbon deficit opens up the opportunity to store carbon through new land management practices. Soil can also store carbon as carbonates
- Forests: About 25 percent of global carbon emissions are captured by plant-rich landscapes such as forests, grasslands and rangelands.
- Geological Carbon Sequestration: Geological carbon sequestration is the process of storing carbon dioxide in underground geologic formations or rocks. Typically, carbon dioxide is captured from an industrial source, such as steel or cement production, or an energy-related source, such as a power plant or natural gas processing facility and injected into porous rocks for long-term storage.
- Technological Carbon Sequestration:
- Graphene Production: The use of carbon dioxide as a raw material to produce graphene, a technological material. Graphene is used to create screens for smartphones and other tech devices. Graphene production is limited to specific industries but is an example of how carbon dioxide can be used as a resource and a solution in reducing emissions from the atmosphere.
- Direct Air Capture (DAC): A means by which to capture carbon directly from the air using advanced technology plants. However, this process is energy intensive and expensive, ranging from $500-$800 per ton of carbon removed. While techniques such as direct air capture can be effective, they are still too costly to implement on a mass scale. Hence, option (d) is the correct answer.
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Which of the following is/are not the methods of carbon sequestration?1. Direct Air Capture2. Graphene Production from carbon dioxide3. Geological capture4. Biological sequestrationSelect the correct answer using the code given below.a)2 onlyb)1 and 3 onlyc)1, 2 and 4 onlyd)All the above are methods of carbon sequestration.Correct answer is option 'D'. Can you explain this answer?
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