Table 4 Mineral content of coffee waste sludge
From: Bio-ethanol production from wet coffee processing waste in Ethiopia
Mineral | Amount |
|---|---|
Manganese | 1.74 mg/kg |
Magnesium | 137 mg/kg |
Zinc | 5.28 mg/kg |
Iron | 45.5 mg/kg |
Copper | 4.02 mg/kg |
Nitrogen | 0.56% |
Phosphorus | 0.15% |
Potassium | 0.50% |