Table 4.
Sample | ζ Potential (mV) | |||
---|---|---|---|---|
Cd.CB | −11.61 | ± | 1.59 | |
Cd.H2SO4 | −5.20 | ± | 2.60 | A |
Cd.KOH | −4.22 | ± | 2.17 | A |
Cd.H2SO4 + KOH | −1.28 | ± | 1.16 |
Note: Mean values with the same letter are not statistically different (Tukey’s test, p-value > 0.05).