Table 3 Electrochemical properties of membranes after continuous operation for 10 days (values are means ± standard deviations, n = 3)
From: Water trapping inside anion exchange membranes during practical reverse electrodialysis applications
Location | Membrane | Membrane resistance (Ω cm2) | Permselectivity (%) | IEC (meq g−1) | Water permeability (mL bar−1 h−1 m−2) |
|---|---|---|---|---|---|
Cathode side | CEMshield | 0.43 ± 0.02 | 75.6 ± 5.9 | 1.69 ± 0.06 | N.A. |
AEM | 0.65 ± 0.03 | 67.0 ± 0.2 | 1.64 ± 0.04 | ||
Middle (Inside stack) | CEM | 0.48 ± 0.02 | 85.6 ± 0.2 | 1.59 ± 0.02 | N.A. |
AEM | 0.43 ± 0.02 | 68.9 ± 1.5 | 1.59 ± 0.06 | ||
Anode side | CEMshield | 0.45 ± 0.01 | 82.2 ± 0.1 | 1.59 ± 0.08 | N.A. |
AEM | 2.68 ± 0.18 | 67.0 ± 0.3 | 1.61 ± 0.06 | ||
Pristine | CEM | 0.41 ± 0.06 | 95.7 ± 0.2 | 1.84 ± 0.08 | 0.025 ± 0.001 |
AEM | 0.41 ± 0.03 | 92.4 ± 0.9 | 1.78 ± 0.08 | 0.014 ± 0.001 |
