Sorbent-based atmosphere revitalization system

A sorbent-based atmosphere revitalization (SBAR) system, comprising:

• a plurality of treatment beds, wherein each of said plurality of treatment beds comprises:
• a bed housing containing a primary moisture adsorbent layer, a secondary moisture adsorbent layer and a primary carbon dioxide adsorbent layer,
• a redirecting plenum between said primary moisture adsorbent layer and said secondary moisture adsorbent layer,
• an inlet port connected to an inlet valve,
• an outlet port connected to an outlet valve,
• a bypass port connected to said redirecting plenum;
• at least one bypass valve connected to said bypass ports;
• an inlet channel connecting said inlet valves to an atmosphere source;
• an outlet channel connecting said at least one bypass valve and said outlet valves to said atmosphere source;
• a vacuum channel connecting said inlet valves, said at least one bypass valve and said outlet valves to a vacuum source;
• at least one controller connected to said inlet valve, said outlet valve and said at least one bypass valve, wherein said controller is configured to sequentially open said inlet valve, said at least one bypass valve and said outlet valve from a single treatment bed of said plurality of treatment beds to said vacuum source;
• at least one sensor capable of detecting at least one of carbon dioxide percentage and water vapor percentage in said atmosphere source;
• and
• wherein said at least one controller is configured to open said at least one bypass valve to said atmosphere source based on a proportional-integral-derivative algorithm, wherein said at least one bypass valve is opened when said carbon dioxide percentage is below a target value and closed when said carbon dioxide percentage is above a target value.