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What techniques are available to separate/filter gases?

  1. Jun 26, 2012 #1
    If you have a flowing gas stream, with multiple species, how many different techniques are there to separate species or particulates?

    I know you can:

    -use centrifugation or similar techniques to separate based upon density

    -use a molecular sieve to separate based upon particle size

    -use an electrical or magnetic field to separate based upon charge differences

    -use another chemical to bond/react with a target species

    Is there anything else I'm missing? Or suggestions on where to read about this?
  2. jcsd
  3. Jun 26, 2012 #2


    Staff: Mentor

    how about distillation?
  4. Jun 26, 2012 #3
    This would require a phase change to liquid, wouldn't it?

    But yes, I guess that still counts.

  5. Jun 29, 2012 #4
    You could move them through a vacuum and separate based on their relative velocities
  6. Jun 29, 2012 #5


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  7. Jun 29, 2012 #6


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    Staff: Mentor

    Exploit different solubilities.
  8. Jun 30, 2012 #7


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