Table 1 The physico-chemical properties of each activated opaline mudstone.
Activation | Non | Acid | Base |
|---|---|---|---|
Specific surface area (m2/g) | 67.58 | 101.62 | 107.36 |
Cation exchange capacity (cmol/kg) | 12.21 | 24.44 | 1.09 |
Zeta potential (mV) | − 6.66 | − 6.60 | − 16.67 |
Mean pore diameter (nm) | 20.92 | 14.46 | 14.27 |
Total pore volume (cm3/g) | 0.353 | 0.367 | 0.383 |
pH | 4.24 | 3.07 | 9.92 |
