Table 2 Estimated fuel properties of Salvadora biodiesel and coconut biodiesel and comparison with standard
Property | Salvadora biodiesel | Coconut biodiesel | ASTM D6751 standard |
|---|---|---|---|
SFA: saturated fatty acid (%) | 82.93 | 87.78 | – |
MUFA: monounsaturated fatty acid (%) | 13.69 | 7.43 | – |
PUFA: polyunsaturated fatty acid (%) | 0.0 | 0.86 | – |
DU: degree of unsaturation | 13.69 | 9.15 | – |
SV: saponification value (mg/g) | 228.29 | 257.71 | – |
IV: iodine value | 11.97 | 8.23 | – |
CN: cetane number | 67.51 | 65.62 | Minimum 47 |
LCSF: long-chain saturated factor | 4.81 | 1.30 | – |
CFPP: cold filter plugging point (°C) | − 1.35 | − 12.37 | – |
CP: cloud point (°C), | 9.51 | 0.61 | Report |
PP: pour point (°C) | 3.50 | − 6.15 | − 15 to 10 |
APE: allylic position equivalent | 9.54 | 9.15 | – |
BAPE: bis-allylic position equivalent | 1.14 | 1.34 | – |
OS: oxidation stability (h) | Infinity | 139.71 | Minimum 3 |
HHV: higher heating value | 37.28 | 36.09 | Report |
υ: kinematic viscosity (mm2/s) | 3.00 | 2.25 | 1.9–6.0 |
ρ: density (kg/m3) | 839 | 837 | 850–900 |