Vacuum Swing Adsorption vs Pressure Swing Adsorption 

Thanks for the feedback! :)

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Thanks for watching!

Yes and no. With my understanding, the trouble is that while it is possible, it can be incredibly expensive.

Absolutely! What information were you looking for?

Thank you!

Great question! The molecular sieves, or zeolites, used in PSA and VPSA processes are not the same. In PSA, the zeolites used are inexpensive and have a lower nitrogen adsorption capacity at normal atmospheric pressure. That's why you need a higher pressure (around 50-90 psig) in order to increase their adsorption capabilities. VPSA uses specialized zeolite which has a higher nitrogen adsorption at near atmospheric pressure. When comparing the two zeolites, you'll get the same results showing when the common zeolite in PSA is at high pressure while the specialized zeolite in VPSA is at normal atmospheric pressure. As such, VPSA is more energy efficient to operate because no high-pressure compression is required. I hope this helps!

@@osi-oxygensolutionsinc.3715 You mean for VSA not for VPSA in above reply....??