Research Article
Optimization of Conversion of High Free Fatty Acid Jatropha curcas Oil to Biodiesel Using Response Surface Methodology
Table 6
Physicochemical properties of JCB.
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Serial number | Property (unit) | ASTM D6751 | IS 15607 | JCB prepared under optimum parameters | JCB [9] | ASTM D6751 limits | IS 15607 limits |
| | 1 | Viscosity (cSt; 40°C) | ASTM D445 | IS 1448 | 4.9 | 4.38 | 1.9–6.0 | 2.5–6.0 | | 2 | Density (g/c·c at 15°C) | ASTM D4052 | IS 1448 | 0.862 | — | — | 0.860–0.900 | | 3 | Flash point (°C) | ASTM D93 | IS 1448 | 174 | 172 | Minimum of 130 | — | | 4 | Water and sediment (Vol %) | D2709 | D2709 | 0.05 | 0.05 | Maximum of 0.05 | Maximum of 0.05 | | 5 | Free glycerin (% mass) | D6584 | D6584 | 0.01 | 0.01 | Maximum of 0.02 | D6584 | | 6 | Oxidative stability of JCB (h) | EN14112 | — | 3.3 | 3.27 | 3 | — | | 7 | Free glycerol | D6584 | D6584 | 0.015 | 0.01 | Maximum of 0.02 | Maximum of 0.02 | | 8 | Total glycerol | D6584 | D6584 | 0.14 | 0.12 | Maximum of 0.25 | Maximum of 0.25 | | 9 | Ester content (%) | — | EN 14103 | 98.3 | 98.5 | — | Minimum of 96.5 |
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