Research Article
Biodiesel Production Process Optimization from Sugar Apple Seed Oil (Annona squamosa) and Its Characterization
Table 3
Physiochemical properties of SASO and SBD in comparison with commercially available diesel and ASTM standard specifications for biodiesel fuel.
| | Property | SASO | SABD | Commercially available diesel | Standards specifications for biodiesel fuel, ASTM D6751-09a |
| | Iodine value (mg I2/g) | | — | — | | | Saponification number | | — | — | | | Acid number (mg KOH/g) | | | — | 0.50 max | | Flash point (°C) | | | | 130 min | | Density (kg/m3) | | | | 870–900 | | Kinematic viscosity (mm2/s) at 40°C | | | | 1.9–6.0 | | Calorific value (MJ/kg) | | | | | | Cetane number | | — | — | 47 min | | Calculated cetane index | — | | | 47 min | | Sulfated ash (w/w, %) | — | | — | 0.020 max | | Carbon residue (w/w, %) | | | — | 0.050 max | | Copper strip corrosion | — | 3 h, 50°C/1a | — | No. 3 max | | Distillation temperature, 90% recovered (°C) | | | | | | IBP | | | | 360 max | | 10% | | | | | | 20% | | | | | | 50% | | | | | | 90% | | | | | | Molecular weight (g/mol) | | — | — | — |
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