Research Article
Waste to Energy: Response Surface Methodology for Optimization of Biodiesel Production from Leather Fleshing Waste
Table 7
Comparison of experimental biodiesel with standards.
| | Physicochemical properties | Unit | Experimental biodiesel | EN
14214 | ASTM D
6751-10 | Diesel | Test method |
| | Density at 25°C | kg/m3 | 880 | 860-900 | 875-900 | 840-860 | (EN ISO 3675 & ASTM D 5002) | | Kinematic viscosity at 40°C | mm2/s | 5.99 | 3.5-5.0 | 1.9-6.0 | 1.9 - 3.8 | ASTM D 445 | | Acid value | mg KOH/g | 0.48 | ≤ 0.5 | ≤ 0.8 | - | ASTM D 664 | | HHV | MJ/kg | 42.38 | - | - | 43.3-46.7 | - | | Iodine value | g I2/100g | 65.13 | 120 max | - | - | ASTMD 5558 | | Cetane number | - | 68.5 | - | 46 - 70 | 47 - 55 | ASTM D613 | | Moisture content | % w/w | 0.023 | - | < 0.03 | | | | Ash content | % w/w | 0.021 | <0.02 | <0.03 | | ASTM D482 |
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