A vacuum pressure swing adsorbent (VPSA) system and method for separating a component from a fluid mixture and including a fluid source for introducing the mixture into the system and a supply apparatus for collecting the separated component. A pair of adsorbent bed vessels is interposed between the...http://www.google.com.au/patents/US6010555?utm_source=gb-gplus-sharePatent US6010555 - Vacuum pressure swing adsorption system and method