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 |