Research Article
Response Surface Methodology Process Optimization of Biodiesel Production from Castor Seed Oil
Table 4
Physiochemical properties of biodiesel (CME).
| Parameter | Unit | CME | ASTM standard |
| Density at 15°C | g/ml | 0.89 | 0.86–0.9 | Kinematic viscosity at 40°C | cSt | 5.22 | 1.9–6 | Acid value | mg·KOH/g oil | 4.3 | 4.3 | FFA | % | 2.15 | 2.15 | Saponification value | mg·KOH/g oil | 179 | 179 | Iodine value | mgI2/100 oil | 97.4 | 80.12–82.88 | Heating value | MJ/kg | 40.6 | 37.5–42.8 | Cetane number | min | 54.8 | 47 min |
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