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Preparation and Evaluation of Biodiesel from Sterculia foetida Seed Oil
Author(s) -
Bindhu Ch.,
Reddy J. R. C.,
Rao B. V. S. K.,
Ravinder T.,
Chakrabarti P. P.,
Karuna M. S. L.,
Prasad R. B. N.
Publication year - 2012
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-011-1969-7
Subject(s) - iodine value , rapeseed , biodiesel , chemistry , pour point , acid value , flash point , sodium hydroxide , nuclear chemistry , sunflower oil , methylene , organic chemistry , catalysis , food science , biochemistry
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/cm 3 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.