Table 3.
Comparison of JF biodiesel properties with diesel fuel.
| Fuel Properties | Testing methods | Present study |
ASTM Limit ASTM D6751 |
Present study |
ASTM Limit ASTM D 975 |
% deviation of B100 from diesel |
|---|---|---|---|---|---|---|
| B100 | Biodiesel | Diesel | Diesel | |||
| Density@ 15 °C, g/ml | ASTM D4052 | 0.8941 | 0.880 | 0.8387 | 848 | 6.2 |
| Density@ 20 °C g/ml | ASTM D4052 | 0.8907 | – | 0.8353 | – | 6.2 |
| Kinematic Viscosity @ 40 °C (cSt) | ASTM D445 | 3.9354 | 1.9–6.0 | 3.0353 | 1.3–4.1 | 22.87 |
| Gross Calorific value (MJ/kg) | ASTM D240 | 44.4 | – | 44 | 42.52 | 4.23 |
| Cetane number | ASTM D976 | 52.9 | 47 min | 49 | 40–55 | 7.37 |
| Flash pint °C | ASTM D93 | 128 | 100–170 | 75 | 60–80 | 41.4 |
| Specific gravity@ (27 °C) | ASTM D1298 | 0.8568 | – | 0.8234 | – | 3.898 |
| Saponification value (mgKOH/g) | ASTM D5558 | 163.6 | 370 max | – | – | – |
| Iodine number (gI2/100 g) | EN,14,111 | 99.8 | 120 max | – | – | – |
| Pour point (°C) | ASTM D97 | 6 | −15 to 16 | −12 | −35 to −15 | – |
| Cloud point (°C) | ASTM D2500 | 4 | −3 to 12 | −7 | −15 to 5 | – |
| Copper strip corrosion test | ASTM D130 | 1a | 4c max. | 1a | 4c max. | Same |
| Acid number (mg KOH/g) | ASTM D664 | 0.28 | 0.5 max | – | – | – |
| Total glycerin (%mass) | ASTM D 6548 | 0.04 | <0.24 | – | – | – |
| PH value@ (22 °C) | – | 9.6 | – | 5.6 | – | 41.6 |
| Water and sediment (%) PPM | ASTM D2709 | 0.02 | 0.05 vol % | – | 161 | – |
| Fuel composition | ASTM D6751 | C16-22 FAME | C12-22 FAME | – | C10-21 HC | – |
| FFA (%) | – | 0.14 | – | – | – | – |
| Methyl ester content (%) | 99.8 | >96.5 | – | – | – |