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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%
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