![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
Measurement of cetane number (CN) of a mixture of fatty acid methyl esters (FAME) [biodiesel] from a large number of lipid sources is expensive. This has resulted in cetane index (CI) estimated by a proposed equation derived from three simultaneous equations, reported in literature as cetane number (CN). Since this proposed equation results in a derived number, this study compares CI reported as CN by this equation with derived cetane number of a mixture of FAME (biodiesel) present in five non-traditional oil seed samples. Derived cetane number (DCN) of a mixture of FAME for each non-traditional oil seed sample is calculated from the measured derived cetane number of each FAME of 99% purity totalling 100%. Percentage relative error (% RE) between reporting of CI as CN by the proposed equation and DCN of a mixture of FAME of five non-traditional oil seed samples is >15 and increases with increasing percentage of saturated FAME. This study concludes that it is erroneous to report CI as CN by the proposed equation.
Acknowledgements
The author wishes to thank the Department of Chemical Engineering, University of Queensland, Australia for providing facilities to write this paper. This article is dedicated to late Professor Damascene Rebello, an inspiring teacher of the author @ http://www.ictmumbai.edu.in/ and late self-effacing Vale, Gus Wiles for his enduring contribution to education @ http://www.chemeng.uq.edu.au/.
Financial and competing interests disclosure
The author has no relevant affiliations or financial involvement with any organization or entity with a financial interest in, or financial conflict with, the subject matter or materials discussed here. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties. No writing assistance was utilized in the production of this manuscript.