Parameters | Contaminated soil | Biochars | Compost | |
|
| Rice husk | Cashew nut shell |
|
pH | 5.70 | 7.40 | 6.30 | 8.70 |
TOC | 1.80 | - | - | - |
Sand (%) | 43 | - | - | - |
Silt (%) | 59 | - | - | - |
Clay (%) | 9 | - | - | - |
N (mg/kg) | 600 | 13,200 | 23,000 | 9600 |
Ca (mg/kg) | 213 | 9780 | 5340 | 29,000 |
Mg (mg/kg) | 86 | 3530 | 135 | 4540 |
P (mg/kg) | 71.5 | 197 | 107 | 2090 |
K (cmol/kg) | 0.46 | 12.4 | 2.80 | 21.9 |
CEC (cmol/kg) | 4.62 | 110 | 36.9 | 210 |
Pb (mg/kg) | 18,300 | 0.90 | 1.20 | 1.50 |