acid-based catalyzed transesterification bioprocess for biodiesel from jatropha oil-based free fatty acids: its physical, and mechanical properties

The study investigated the efficiency of biodiesel conversion from jatropha oil-based free fatty acid using an acid-based catalyzed transesterification bioprocess. the maximum jatropha biodiesel yield was 80% in a 1-hour reaction using a 0.03:1 acid catalyst to oil and a 2:1 alcohol-to-oil ratio. at the same time, the optimum biodiesel yield was in a 2-hour reaction for step 2 by using a 0.03:1 ratio of base catalyst to oil and a 5:1 ratio of alcohol to oil. the fourier transform infrared spectrometer analysis of jatropha biodiesel (jb) revealed a methyl peak (o-ch3) at 1436.07 cm^-1, indicating compatibility with pure mineral diesel, high speed (1295.67rpm), brake horsepower(30.6906kw), mechanical efficiency (53.10%), and lower specific fuel consumption (15.5879 ml/kw. compared with other jatropha biodiesel blends.