Table 1 Comparison of fuel properties of biodiesel produced from palm oil using free lipase and calcium alginate and Irvingia gabonensis-immobilized lipase based on American and European biodiesel standards
Fuel properties | Calcium alginate lipase | Irvingia gabonensis lipase | Free lipase | ASTM D6751 standard | EN 14214 standard |
|---|---|---|---|---|---|
Pour point (°C) | 5.8 | 6.5 | 6.7 | (−15)-10 | |
Flash point (°C) | 282 | 280 | 270 | > 100-170 | > 130 |
Density (at 15 °C) | 820 | 823 | 813 | 880 | 860-900 |
Cloud point (°C) | 16.9 | 15 | 16.8 | ||
Kinematic viscosity (mm2/s) | 4.9 | 4.9 | 4.9 | 1.9-6.0 | 3.5-5.0 |