Cation Dependence, pH Tolerance, and Dosage Requirement of a Bioflocculant Produced by Bacillus spp. UPMB13: Flocculation Performance Optimization through Kaolin Assays

Table 2

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.