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Summary of the sulfate flux results for the one side PAA-modified AEMs as a function of the absence/presence of humic acid in the feed chamber.
| Membrane Type | Sulfate Flux (mmol/(m2·h)) |
|---|---|
| (1) Unmodified | 3.6 |
| (2) One side 1 g/L PAA | 2.2 |
| (3) One side 3 g/L PAA | 1.9 ± 0.1 |
| (5) One side 5 g/L PAA | 1.9 |
