Table 2.
Proximate, ultimate, and biochemical analysis of freshwater algae species.
| Properties | Chlorella pyrenoidosa | Oedogonium sp. | Cladophora vagabunda |
|---|---|---|---|
| Proximate (wt.%) | |||
| Moisture | 5.60 | 6.5 | 5.7 |
| Ash | 7.50 | 20.6 | 17.8 |
|
| |||
| Biochemical (wt.%) | |||
| Organic content | 86.90 | 72.9 | 76.5 |
| Carbohydrate | 22.80 | 41.0 | 44.4 |
| Protein | 62.70 | 22.5 | 26.8 |
| Lipid | 1.40 | 9.4 | 5.3 |
|
| |||
| Ultimate (wt.%) | |||
| Carbon | 44.53 | 36.6 | 37.5 |
| Hydrogen | 5.71 | 5.7 | 5.9 |
| Oxygen | 38.87a | 30.9 | 32.9 |
| Nitrogen | 9.80 | 4.8 | 6.5 |
| Sulfur | 1.09 | 0.4 | 1.8 |
| HHV (MJ/kg) | 18.06 | 15.8 | 16.4 |
| Reference | This study | [15] | [15] |
aO (wt.%) = 100 – (C + H + N) (wt.%); HHV: higher heating value.