Preparation and Evaluation of Biodiesel from <Emphasis Type="Italic">Sterculia foetida</Emphasis> Seed Oil |
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Authors: | Ch Bindhu J R C Reddy B V S K Rao T Ravinder P P Chakrabarti M S L Karuna R B N Prasad |
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Affiliation: | (1) Indian Institute of Chemical Technology, Hyderabad, 500 007, India; |
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Abstract: | Sterculia foetida oil contains cyclopropene fatty acids namely 8,9-methylene-heptadec-8-enoic acid (malvalic) and 9,10-methylene-octadec-9-enoic
acid (sterculic) to an extent of 50–55%. The present study reports the preparation of biodiesel from S. foetida oil using sodium hydroxide as catalyst. The resultant biodiesel was evaluated for physico-chemical properties namely iodine
value (72.6), free fatty acids (0.17%), phosphorous content (0 ppm), flash point (179 °C), cloud point (3 °C), pour point
(3 °C), viscosity at 40 °C (4.72 cSt), oxidative stability at 110 °C (3.42 h), density (0.850 g/cm3 at 15 °C), and trace metals (Group I metals 0.21 ppm). The properties were compared with that of sunflower, soybean and rapeseed
oil-based biodiesels and found to be comparable except for the pour point. |
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