Research Article
Application of Biochar in the Remediation of Contaminated Soil with High Concentration of Lead and Zinc
Table 4
The fertility properties of the biochar and PC-treated soils.
| | Standard limit | Untreated soil | Biochar-treated soil | PC-treated soil | 5% | 8% | 10% | 5% | 8% | 10% |
| N (mg/kg) | ≥40 | 52 | 68 | 84 | 102 | 41 | 43 | 38 | P (mg/kg) | ≥8 | 12.8 | 19.2 | 20.1 | 28.7 | 8.7 | 5.1 | 3.7 | K (mg/kg) | ≥60 | 79 | 139 | 154 | 155 | 51 | 47 | 50 | Organic content (g/kg) | ≥12 | 15.6 | 17.4 | 16.9 | 18.3 | 10.2 | 9.7 | 9.1 | CEC (cmol (+)/kg) | ≥10 | 5.6 | 12.1 | 17.8 | 19.4 | 5.7 | 6.1 | 3.2 |
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