Separating CO2 from Air: Chemical Methods and Techniques

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In summary, there are multiple methods for separating CO2 from air, including cryogenic separation, membrane separation, and absorption. This is necessary because CO2 is a greenhouse gas that contributes to climate change. The most efficient method for separating CO2 from air depends on various factors, and it can be done on a large scale using industrial methods. The separated CO2 can be used for various purposes, such as industrial processes, carbon capture and storage, and conversion into other products.
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The riddler
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Basically anyway to do the question above.

Thanks for any replies
 
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Use something like NaOH, KOH, Ca(OH)2. These will react with the CO2 in the air to give the corresponding bicarbonates/carbonates. They won't react with N2, O2, or Ar. Then dry the carbonates in an oven to get rid of the water and then heat them up to decompose them into CO2.
 

1. How is CO2 separated from air?

There are several methods for separating CO2 from air, including cryogenic separation, membrane separation, and absorption. Cryogenic separation involves cooling the air to very low temperatures, causing the CO2 to condense and separate from the other gases. Membrane separation uses a semipermeable membrane to selectively allow CO2 to pass through, leaving behind the other gases. Absorption involves passing the air through a solvent that absorbs the CO2, which can then be separated from the solvent.

2. Why do we need to separate CO2 from air?

CO2 is a greenhouse gas that contributes to climate change. Separating it from air can help reduce its concentration in the atmosphere and mitigate its impact on the environment.

3. What is the most efficient method for separating CO2 from air?

The most efficient method for separating CO2 from air depends on various factors, such as the volume of CO2 to be separated, the desired purity level, and cost considerations. Each method has its advantages and disadvantages, and the most efficient method will vary depending on the specific circumstances.

4. Can CO2 be separated from air on a large scale?

Yes, CO2 can be separated from air on a large scale using industrial-scale separation methods. These methods can handle large volumes of air and produce high-purity CO2, which can be captured and stored or used for various industrial processes.

5. What are the potential uses for separated CO2?

Separated CO2 can be used for various purposes, such as industrial processes, carbon capture and storage, and enhanced oil recovery. It can also be converted into other products, such as fuels or chemicals, through processes like carbon sequestration and conversion.

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