Determination of Free Fatty Acid Composition in Jatropha Crude Oil and Suitability as Biodiesel Feedstock

Author(s): Ravindra Verma*, Dinesh K. Sharma, Prakash S. Bisen

Journal Name: Current Alternative Energy

Volume 3 , Issue 1 , 2019

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Graphical Abstract:


Background: Jatropha curcas is one of the most suitable plants the seeds of which are non-edible in nature but rich in oil. Around 350 oil bearing crops are found suitable as potential alternative fuels for diesel engine. Non-edible crop Jatropha curcas has been identified by many experts for biodiesel production in many countries like India.

Objective: The objective of this study is to find out the composition of Jatropha curcas oil and its relation with engine parameters. This research covers selected aspects of physical and chemical relation of fatty acid composition of Jatropha curcas oil and its fuel properties.

Methods: A gas-chromatograph with high resolution mass spectrometer was used to determine the free fatty acid composition of the Jatropha curcas oil sample. The column length, diameter and thickness were 30m, 0.25mm and 0.25μm, respectively. Helium gas was used as carrier gas, column flow of 1.80 mL/min for the GC.

Results: The major fatty acids found in Jatropha curcas crude oil were the oleic (3.81%), linoleic (50%), and palmitic fatty (35.66%) acid. Some physical and chemical characteristics have been evaluated and found suitable for the application in engine. Oxidation stability, oxidizability and cetane number were calculated as 4.949, 1.076 and 55.856, respectively.

Conclusion: The physical and chemical properties of Jatropha crude oil are similar to the biodiesel except the viscosity; therefore, further processing is required. The fuel properties of Jatropha Curcas oil based biodiesel were found to be within the limits of American Society for Testing and Materials (ASTM) specifications for biodiesel and diesel fuel.

Keywords: Cetane number, free fatty acid, iodine number, Jatropha curcas crude oil, oxidation stability, triglyceride.

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Article Details

Year: 2019
Published on: 22 July, 2019
Page: [59 - 64]
Pages: 6
DOI: 10.2174/2405463103666190722163037

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