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Ox02b: Getting more oxygen

We started using larger columns with 750g zeolite capacity and were able to produce 2 L/min of 80% oxygen.


  • 1-7: 2-way solenoid valve
  • Zeolite bed: each ca. 750g LiX
  • Feed: 5 bar dry air


  • Column housing = Reverse Osmosis Membrane housing
  • 750g LiX in each column
  • Valves: Festo, Switching controller: Aduino
  • 80% oxygen in outlet stream (2 l/min) using pressurised dry air (6 bar) in input.
  • Switching cycle: 4.5s pressurizing/blowdown, 0.4s feeding, 1.3s equilibration

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