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Table 3 Assumed characteristics of molasses’ vinasse from Metahara Ethanol production plant, Ethiopia [16]

From: Cultivation of microalgae for biofuel production: coupling with sugarcane-processing factories

Parameter Value
pH 4.10–5.00
Temperature (°C) 80–100
BOD (mg O2/L) 25,000
COD (mg O2/L) 65,000 (range 50,000–150,000)
Total solids (mg/L) 81,500
Free solids (mg/L) 60,000
Fixed solids (mg/L) 21,500
TN (mg N/L) 1000 (450–1610)
TP (mg P2O5/L) 150 (100–290)
Potassium (mg K2O/L) 3740–7830
Calcium (mg CaO/L) 450–5180
Magnesium (mg MgO/L) 420–1520
Sulphate (mg SO4/L) 6400
Carbon (mg C/L) 11200–22,900
C/N ratio (mass ratio) 16–16.27
Organic material (mg/L) 63,400
Reducing substances (mg/L) 9500
Total vinasse flow rate (m3/day)a 396
  1. aFlow rate of the vinasse was estimated based on data from Table 1