Table 1 Summary data for pH, CEC (cmol/kg), methylene blue adsorption (milligram dye adsorbed/gram biochar), and field capacity measurements (g H2O/g biochar)
Sample | pH | CEC (cmol/kg) | Methylene blue adsorption (mg/g) | Field capacity (g H2O/g biochar) |
|---|---|---|---|---|
Untreated | 7.30 ± 0.39 | 15.39 ± 1.59 | 1.79 ± 0.18 | 4.88 ± 0.02 |
30 min O3 | 5.46 ± 0.40 | 30.26 ± 3.23 | 9.22 ± 0.18 | 3.63 ± 0.02 |
60 min O3 | 5.33 ± 0.28 | 31.03 ± 2.44 | 9.45 ± 0.07 | 2.92 ± 0.21 |
90 min O3 | 5.28 ± 0.33 | 32.69 ± 2.51 | 9.35 ± 0.04 | 3.38 ± 0.08 |
Soil ref. | N/A | 12.75 ± 1.01 | N/A | 2.03 ± 0.40 |