how do you extract nitrogen from the air?

Answer 1

I don't do it very well. I tend to extract oxygen and breathe out the nitrogen. There are some plants that concentrate nitrogen in the soil.


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Low temperature distillation would probably be a good
starting point. Oxygen is the main thing you'd want to separate, and it has a vastly different boiling point. but molecular sieves might be useful for getting rid of trace components??

Look at the technologies used by Air Liquide, Air Products, BOC (at least those used to be the names of the big
liquified gas producers).
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Answer 2

Compress the air until it liquifies. Then boil off the Nitrogen. It has a very low boiling point.

Answer 3

Compress, expand to liquefy the gas and separate it from all other gases base on boiling point properties.

Answer 4

you trap air and break it down till you seperate the N

Answer 5

By liquification.