Production and characterization of biodiesel from tung oil

Applied Biochemistry and Biotechnology
Ji-Yeon ParkJin-Suk Lee

Abstract

The feasibility of biodiesel production from tung oil was investigated. The esterification reaction of the free fatty acids of tung oil was performed using Amberlyst-15. Optimal molar ratio of methanol to oil was determined to be 7.5:1, and Amberlyst-15 was 20.8 wt% of oil by response surface methodology. Under these reaction conditions, the acid value of tung oil was reduced to 0.72 mg KOH/g. In the range of the molar equivalents of methanol to oil under 5, the esterification was strongly affected by the amount of methanol but not the catalyst. When the molar ratio of methanol to oil was 4.1:1 and Amberlyst-15 was 29.8 wt% of the oil, the acid value decreased to 0.85 mg KOH/g. After the transesterification reaction of pretreated tung oil, the purity of tung biodiesel was 90.2 wt%. The high viscosity of crude tung oil decreased to 9.8mm(2)/s at 40 degrees C. Because of the presence of eleostearic acid, which is a main component of tung oil, the oxidation stability as determined by the Rancimat method was very low, 0.5h, but the cold filter plugging point, -11 degrees C, was good. The distillation process did not improve the fatty acid methyl ester content and the viscosity.

Citations

Nov 21, 2008·Applied Biochemistry and Biotechnology·Ji-Yeon ParkJin-Suk Lee
Dec 18, 2008·Applied Biochemistry and Biotechnology·Gwi-Taek Jeong, Don-Hee Park
Sep 14, 2011·Applied Biochemistry and Biotechnology·Qiong ShangBin Liang
Jan 8, 2014·Bioresource Technology·Ji-Yeon ParkSun-A Choi
Jan 20, 2016·International Journal of Genomics·Huiping ZhuYicun Chen
Jun 4, 2015·Molecular Genetics and Genomics : MGG·Susu YangYicun Chen
Nov 12, 2016·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Zhiyong ZhanYangdong Wang
Jun 29, 2021·Rapid Communications in Mass Spectrometry : RCM·Ling XuShangjun Zhuo

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