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Table 5 General assumptions for the microalgae cultivation

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

Parameter/description Value References
Assumed depth of pond (m) 0.30 [8]
Assumed dimensions of a pond (m) 10, 100, and 0.30 for width, length, and depth, respectively [8, 20]
Fraction of area occupied by the PBRs (%) 0.10 [8]
Temperature (°C) 29.70 Characteristics of the wastewater
pH 6.60 Characteristics of the wastewater
Algae growth rate/productivity (g/m2/day) 25 [21, 22]
Mixing velocity in the pond (cm/s) 25 [8, 23]
Electricity demand by paddle wheel (kW/ha) 2 [8]
Electricity demand to pump WW to pond (kWh/L) 2.40 × 10-5 [23]
Electricity demand to pump from pond to bio-flocculation (kWh/L) 4.80 × 10-5
Electricity demand for recycle pump (kWh/L) 2.50 × 10-5
Electricity consumption for flue gas injection (kWh/kg CO2) 2.22 × 10-2 [24]
% of flue gases captured 90 Estimated
CO2 utilization (% converted to algae) 85 [8, 23]
CO2 required for algal growth (g CO2/g algae dry) 1.92 From the microalgae composition
TN required for algal growth (g N/g algae dry) 0.09 From the microalgae composition
TP required for algal growth (g P/g algae dry) 1.28 × 10-2 From the microalgae composition
TN reduction (%) 95 [25, 26]
TP reduction (%) 80 [8]
Water loss by evaporation (m/day) 6.91 × 10-3 Average evaporation rate data for Metahara [27]
Algae oil content (wt.%) 30 [8], [28]
Culture density (g/L) 0.50 (0.10–2) [22, 25]
Ratio of total pond area to total facility foot print (%) 84 [29]