Physio-chemical characterizations of AFOMEs and their comparison with standards and petrodiesela.
Parameters studied | EN 14214 | ASTM D-6751 | Petro-diesel | Experimental result | RSOB41 | AAOB42 | HMOB43 |
---|---|---|---|---|---|---|---|
Density @ 15 °C (g cm−3) | 0.86–0.90 | 0.86–0.90 | 0.809 | 0.831 | — | 0.91 | 0.88 |
Kinematic viscosity@ 40 °C (cps) | 3.5–5.0 | 1.9–6.0 | 1.3–4.1 | 5.32 | 4.5 | 36 | 4.1 |
Flashpoint, (°C) | Min. 120.0 | Min. 130 | 60–80 | 158 | 120 | — | 153 |
Acid value, (mg KOH g−1) | Max. 0.50 | Max. 0.5 | — | 0.40 | 0.12 | 0.64 | 0.35 |
Saponification value (mg KOH g−1) | — | — | — | 174.8 | — | — | — |
Iodine value, (g I2 per 100 mg) | Max. 120 | Max. 120 | — | 142.5 | — | 132.11 | — |
Cloud point (°C) | — | — | −15 to 5 | 7 | 3 | — | — |
Pour point (°C) | — | — | −2.0 | −28 | −5 | — | −9 |
Cetane number | Min. 51 | Min. 47 | 49.7 | 52 | — | — | 51.2 |
Fire point (°C) | — | — | — | 189 | — | — | — |
Oxidation stability (110 °C, h) | Min. 6 | Min. 3 | 25.8 | 2.75 | — | — | — |
Ash content | — | — | — | 0.002 | — | — | 0.01 |
Specific gravity | — | — | — | 0.83134 | 0.85 | — | — |
Free fatty acid (%) | — | — | — | 0.4 | |||
Cold filter plug point (°C) | Max. 19 | Max. 19 | −16 | −25 | — | — | — |