Journal
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
Volume 42, Issue 15, Pages 1891-1901Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15567036.2019.1604902
Keywords
Radish oil; cosolvent assisted alcoholysis; biodiesel; fuel properties assessment; biodiesel analysis
Funding
- Chemistry Department, College of Science, Mosul University
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Transesterification of radish oil (RO) with different alcohols, namely, methanol, ethanol, and mixed methanol/ethanol at room temperature (32 degrees C) in the existence of different cosolvents (n-hexane, petroleum ether [40-60 degrees C], cyclohexane, diethyl ether, and acetone), was accomplished in this work. Through transesterification process, parameters affecting the alkyl esters yields, like cosolvent kind, cosolvent amount, KOH amount, alcohol:RO molar ratio, reaction duration, and stirring speed were studied. At the ideal conditions, yields of methylic, ethylic, and mixed methylic/ethylic biodiesels (BDs) were 97.55 +/- 2.0, 97.33 +/- 2.0, and 97.0 +/- 1.0 wt.%, respectively. Monitoring cosolvent process of the RO was finished by H-1 NMR spectroscopy which was exploited for quantifying the BD yield as well. High-quality and yield BDs from the RO were attained as a result of cosolvent alcoholysis reaction, and the specifications of the resulting BDs in addition to their blends with conventional diesel fuel obeyed those given by ASTM D6751 and ASTM D7467-17 standards, respectively. The study also revealed that kind of an alcohol involved in the transesterification reaction had an influence on the ideal conditions needed to yield maximum transformation.
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