Table 1 Literature studies on adsorption-based air separation for medical grade oxygen production.
From: Flexible oxygen concentrators for medical applications
Authors | Adsorbent | Cycle type and duration | Operating pressures (bar) | Process performance | |||
|---|---|---|---|---|---|---|---|
Purity (%) | Recovery (%) | Flow rate (L/min) | BSF (kg ads. \(\hbox {O}_{2}\) TPD\(^{-1}\)) | ||||
Farooq et al.8 | 5A zeolite | 4-step PSA, 100 s | \(P_a\) = 1.5, \(P_d\) = 1.01 | 93.4 | 20.1 | 0.07 | – |
Kopaygorodsky et al.9 | 5A zeolite | 2-step PSA, < 3 s | \(P_a\) = 1.52, \(P_d\) = 1.01 | 85 | 56 | – | 0.0073 |
Santos et al.10 | Oxysiv 5, 7& | 4-step PSA, 18 s | \(P_a\) = 3, \(P_d\) = 1 | 94.5 | 21.3 | 3.7 | – |
Sylobead MS S 624 | |||||||
Santos et al.11 | Oxysiv 5, 7& | 6-step PSA, 16 s | \(P_a\) = 3, \(P_d\) = 1 | 94.5 | 34.1 | 4.3 | – |
Sylobead MS S 624 | |||||||
Rao et al.12 | 5A & Ag-Li-X zeolite | 2-step PSA, 1.32 s | \(P_a\) = 3.55, \(P_d\) = 1.01 | 90 | 10–55 | 5 | – |
Chai et al.4 | LiX zeolite | 4-step PSA, 3–5 s | \(P_a\) = 3.04–4.05, \(P_d\) = 1.01 | 90 | 25–35 | 5 | 11.3–22.7 |
Rao et al.7 | LiLSX zeolite | 4-step PSA, 3–9 s | \(P_a\) = 4, \(P_d\) = 1 | 90 | 15-30 | 1–3 | 45–70 |
Zhu et al.13 | LiLSX zeolite | 5-step PVSA, 7 s | \(P_a\) = 2.4, \(P_d\) = 0.6 | 90 | 29.5 | 0.75 | 82.8 |
Moran et al.14 | LiLSX zeolite | 2-bed 6-step PVSA, 3.8–6.8 s | \(P_a\) = 1.95, \(P_d\) = 0.43 | 92–93 | 41–45 | – | 23.1–36.7 |
Zhu et al.15 | LiLSX zeolite | 4-bed 6-step PSA, 5 s | \(P_a\) = 2.53, \(P_d\) = 1.01 | 92 | 30 | 1 | 78 |
