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Statistical analysis for flocculating activity at different pH conditions.
| pH | Flocculating activity (%) | F value | P value* |
|---|---|---|---|
| 3.0 | 33.7 ± 11.6 | 242.398 | .000 |
| 4.0 | 81.8 ± 1.8 | ||
| 5.0 | 93.8 ± 0.9 | ||
| 6.0 | 90.5 ± 0.5 | ||
| 7.0 | 69.9 ± 4.9 | ||
| 8.0 | 65.8 ± 3.1 | ||
| 9.0 | 7.0 ± 2.0 | ||
| 10.0 | 9.0 ± 2.1 | ||
| 11.0 | 7.9 ± 4.3 |
Equality of variances not assumed. Games-Howell post-hoc test was used.
*The mean difference between groups is significant at 0.05 level.
