Research Article
Biodiesel from Citrullus colocynthis Oil: Sulfonic-Ionic Liquid-Catalyzed Esterification of a Two-Step Process
Table 1
Physical and chemical properties of CCO.
| | Property | Standard method | CCO |
| | Density, 20°C (kg/m3) | ASTM D4052 | 925.7 | | Kinematic viscosity, 38°C (mm2/s) | ASTM D445 | 35.20 | | Acid value (mg KOH/g oil) | ASTM 664 | 2.30 | | Iodine value (g I/100 g oil) | AOCS Cd1-25 | 107.4 | | Flash point (K) | ASTM D93 | 509 | | Pour point (K) | ASTM D97 | 285 | | Cloud point (K) | ASTM D2500 | 279 | | Carbon residue (wt.%) | ASTM D4530 | 0.27 | | Cetane number | ASTM D613 | 37.4 | | High heating value (MJ/kg) | ASTM D240 | 39.56 | | Sulfur content (wt.%) | ASTM D5453 | 0.009 | | Ash content (wt.%) | ASTM D482-91 | 0.009 | | Distillation temp. (°C), 95% | ASTM D86 | 368 |
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