Table 2.
Fuel properties of biodiesel obtained from transesterification process using enhanced CaO prepared from calcination followed by hydration–dehydration treatment at optimal reaction conditions.
| No | Property | ASTM method | ASTM limit for B 100 | Biodiesel using | |
|---|---|---|---|---|---|
| Methanol | Methanol–ethanol | ||||
| 1 | Density at 15 °C kg/m3 | D4052 | 880 | 874 | 877 |
| 2 | Density at 20 °C kg/m3 | D4052 | 880 | 859 | 863 |
| 3 | Flash point °C | D93 | 100–170 | 105 | 118 |
| 4 | Cloud point °C | D2500 | − 3–12 | 9 | 9 |
| 5 | Kinematic viscosity at 40 °C mm2/s | D445 | 1.9–6.0 | 4.9 | 5.5 |
| 6 | Acid value | D974 | 0.50 | 0.45 | 0.48 |
| 7 | Water and sediment % (v/v) | D2709 | 0.050 | 0.040 | 0.050 |
| 8 | Copper strip corrosion, 3 h at100 °C | D130 | 3 max | 1 | 1 |