Table 3.
Effect of the time of use on the dissolved CH4 removal efficiency (RE) and CH4 flux (JCH4) in degassing tests (at 5 h of time on stream) with non-modified PVDF (nmPVDF) and modified PVDF (mPVDFmax) at different liquid flow rates (QL) of distilled water and anaerobic reactor effluent.
| Membrane | QL, L h−1 | Time of Use, h | RE, % | JCH4 × 105, g s−1 m−2 |
|---|---|---|---|---|
| (a) With deionised water | ||||
| nmPVDF | 3.5 | 0 | 19 ± 1 a | 27 a |
| 21.0 | 0 | 39 ± 1 a | 46 a | |
| mPVDFmax | 3.5 | 0 | 21 ± 2 | 29 |
| 21.0 | 0 | 42 ± 1 | 52 | |
| (b) With anaerobic effluent | ||||
| nmPVDF | 3.5 | 0 | 19 ± 1 | 27 |
| 3.5 | 720 | 19 ± 2 | 26 | |
| 21.0 | 0 | 39 ± 1 | 46 | |
| 21.0 | 744 | 34 ± 2 | 39 | |
| mPVDFmax | 3.5 | 0 | 22 ± 3 | 29 |
| 3.5 | 528 | 19 ± 1 | 24 | |
| 21.0 | 0 | 42 ± 1 | 52 | |
| 21.0 | 672 | 20 ± 1 | 26 | |
a Previous work [8].