Abstract
Zanthoxylum bungeanum seed oil (ZSO) was the by-product of the zanthoxylum industry, and was a kind of cheap and abundant source in china, which can be great potential of use as a feedstock for biodiesel production in terms of reducing the producing cost. Kinetics of Transesterification of Biodiesel from Zanthoxylum bungeanum seed Oil Ethyl Ester using Sodium ethoxide as an alkaline catalyst was studied in this paper. The results showed that the progression of transesterification was grade 1.5, the reaction activation energy was 17.876kJ•mol-1 and the pre-exponential factor was 0.8521L/(mol•min). The contrast between experimental value and predicted value displayed the dynamics model had a good veracity, and can be applied for predicting reaction rate of progress.
Highlights
Contrast between experimental value and predicted value displayed the dynamics model had a good veracity, and can be applied for predicting reaction rate of progress
The transesterification reaction is a chemical reaction of triglyceride and a short chain alcohol under the action of a catalyst to produce a fatty ester monoester[2-4]
It is generally believed that fatty acid alkyl esters are prepared by transesterification, using different short chain alcohols or selecting different lipids, and the kinetic model and parameters of the transesterification reaction are different[10, 11]
Summary
ZSO was provided by a local company located in Hancheng, Shaanxi Province, China. This is a high yield area for Z. bungeanum Maxin. Sodium ethoxide, change-color-silica gel and other chemicals were of analytical reagent grade. The pretreated ZSO used in this experiment, with the acid value and the saponification value of 1.56 mg KOH/g and 189.3 KOH/g, was adapted for biodiesel preparation while alkali was as catalyst
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