Journal
BIOMASS & BIOENERGY
Volume 40, Issue -, Pages 155-161Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biombioe.2012.02.012
Keywords
Jatropha curcas; Biodiesel; Yield; Seed-oil; Physico-chemical characterization
Funding
- University Grants Commission, India
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Biodiesel is an alternative environmentally friendly fuel made from renewable biological sources such as vegetable oils and animal fats. The present report deals with screening of 14 accessions of Jatropha curcas collected from all over India to find the most suitable ones for production of Biodiesel. From the 14 accessions of J. curcas located in the plantation at Osmania University, 4 accessions were initially selected on the basis of traits like general appearance, pest resistance, seed yield and seed-oil content. Further, the seed-oil of these 4 accessions was characterized by physico-chemical analysis to identify the elite accessions for production of biodiesel. Highest 1000-seed weight (640 g) and highest percentage seed-oil content (50.16) (extracted by Soxhlet method with hexane as the solvent) was recorded in the KM accession. The transesterification process is affected by the presence of high free fatty acids (recorded in MB accession) and high moisture content (recorded in KM accession) of the seed-oil which also interfere with the separation of fatty esters and glycerol during production of Biodiesel. Further, high phosphorus content and iodine number (recorded in MB accession) interfere with conversion of seed-oil to Biodiesel. In the above context, in spite of its yield being lower, the seed-oil of the RSAD accession was found to be most suitable for Biodiesel production followed by KM, F.W.B and MB accessions, since it contains lower free fatty acids, acid value, viscosity, diglycerides and iodine number. (C) 2012 Elsevier Ltd. All rights reserved.
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