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Table 6 Outputs from the cultivation and harvesting models

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

Parameters Cultivation Harvesting
Pond Bio-flocculation DAF Centrifugation
Biomass concentration (g/L) 0.50 10 60 250
Dry content of algae (tons/year) 1412 1,341.40 1,207.30 1,146.90
Area for cultivation land (ha) ~23 - - -
Algae over flow (tons/year) - 70.60 134.10 60.40
Filtered algae (tons/year) - 70.60 134.10 60.40
Total water required in the pond (m3/year) 2,824,000 - - -
Total water feed to the ponds from the sugar factory (m3/year) 260,500 - - -
Water loss from pond by evaporation (m3/year) 390,841.60 - - -
Treated water (m3/year) - 2,689,860 114,019 15,533
Water recycle to the pond (m3/year) 2,819,412 - - -
Additional fresh water to pond (m3/year) 134,930 - - -
Water with the microalgae (m3/year) 2,824,000 134,140 20,121 4587.60
Electricity demand (MWh/year) 423.90 - 11.40 77.70
Electricity demand for filtration (MWh/year) - 0.70 1.30 0.60