| A | Surface area of the membrane (m2) |
| Ci−feed | Concentration of species i in the feed stream (kg·m−3) |
| Ci−permeate | Concentration of species i in the permeate stream (kg·m−3) |
| J | Flux (kg·m−2·s−1) |
| mi | Mass of species i in the permeate stream (kg) |
| Pi | Membrane permeability of species i (m2·s−1) |
| t | Time of permeation (h) |
| WPDMS | Weight of the PDMS polymer (g) |
| WZIF-8 | Weight of the ZIF-8 nanoparticles (g) |
| xi | Mass fraction of species i in the feed stream (gi·g−1solution) |
| yi | Mass fraction of species i in the permeate stream (gi·g−1solution) |
| σ | Membrane effective thickness (m) |
| αi | Selectivity of species i (-) |
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