Thermophysical properties of biodiesel and related systems: Low-pressure vapour–liquid equilibrium of methyl/ethyl Jatropha curcas biodiesel |
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| Institution: | 1. Islamic Azad University, Science and Research Branch, Iran;2. Research Institute of Petroleum Industry (RIPI), P.O. Box 14665-1998, Tehran, Iran;1. Petroleum University of Technology, Abadan, Iran;2. Iran University of Science and Technology, Tehran, Iran;3. Amirkabir University of Technology, Tehran, Iran;4. Sharif University of Technology, Tehran, Iran;1. Research Institute of Petroleum Industry (RIPI), Tehran, PO Box 14665-1998, Iran;2. Department of Chemistry, Sharif University of Technology, Tehran, PO Box 11155-3516, Iran;1. Petroleum and Chemical Engineering Department, Sultan Qaboos University, PO Box 33, PC, 123, Muscat, Oman;2. Chemical Engineering Department, Ahmadu Bello University, Zaria, Nigeria |
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| Abstract: | Biodiesel production from non-edible oils has been considered in recent years due to their economic, politics and environmental aspects. Vapour–liquid equilibrium data for the pseudo-binary and pseudo-ternary systems involving fatty acid methyl/ethyl esters from Jatropha curcas oil were determined over the pressure range from (6.7 to 66.7) kPa in an Othmer-type ebulliometer. All systems presented non-ideal behaviour and positive deviations from Raoult’s law. It was observed that the addition of up to 10 wt.% of alcohol (methanol or ethanol) promoted a significant decrease in the boiling point temperatures for the evaluated systems. The UNIQUAC model was used to correlate the experimental values, with good agreement between experiment and model results. |
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