Table 2 Chemical characteristics of PG organic.
From: Valorization of rare earth processing byproducts for agriculture usage
Parameter | Value |
|---|---|
Moisture (%) | 13.79 ± 0.052 |
pHwater (1:2.5) | 7.16 ± 0.012 |
Conductivity (mS/cm) | 4.96 ± 0.058 |
Cation exchange capacity (CEC) (cmol+/kg) | 24.31 ± 2.325 |
Exchangeable Ca | 65.60 ± 5.205 |
Exchangeable K | 14.82 ± 1.209 |
Exchangeable Mg | 51.04 ± 5.074 |
Exchangeable Na | 1.85 ± 0.010 |
Nitrogen (%) | 1.29 ± 0.027 |
Phosphorus (%) | 2.62 ± 0.143 |
Potassium (%) | 2.24 ± 0.030 |
Calcium (%) | 9.56 ± 0.598 |
Magnesium (%) | 2.99 ± 0.022 |
Water soluble P (mg/kg) | 154.67 ± 12.837 |
Aluminium (%) | 0.74 ± 0.056 |
Boron (%) | 0.02 ± 0.003 |
Copper (%) | 0/01 ± 0.001 |
Ferum (%) | 5.93 ± 0.345 |
Manganese (%) | 0.17 ± 0.007 |
Zinc (%) | 0.04 ± 0.003 |
Arsenic (mg/kg) | 1.51 ± 0.083 |
Cadmium (mg/kg) | 0.33 ± 0.01 |
Cobalt (mg/kg) | 1.64 ± 0.024 |
Chromium (mg/kg) | 21.84 ± 3.90 |
Mercury (mg/kg) | nd |
Molybdenum (mg/kg) | 1.26 ± 0.089 |
Nickel (mg/kg) | 106.85 ± 1.14 |
Lead (mg/kg) | 53.58 ± 3.03 |
Selenium (mg/kg) | 3.34 ± 0.45 |
