In-situ Transesterification of Jatropha curcas L. Seeds for Biodiesel Production using Supercritical Methanol

M.A.M Ishak,Z Zakaria,K Ismail,Ali H Jawad,W.I Nawawi,A.Y Ani

doi:10.1051/matecconf/20179701082

M.A.M Ishak, Z Zakaria + Show 4 more

Open Access

https://doi.org/10.1051/matecconf/20179701082

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Abstract

In-situ supercritical methanol transesterification for production of biodiesel from Jatropha curcas L. (JCL) seeds was successfully being carried out via batch-wise reactor system, under varying temperatures of 180 - 300 °C, pressures of 6 - 18 MPa, reaction time of 5 - 35 min and seeds-to-methanol ratio of 1:15 - 1:45 (w/v). In this study, the extracted oil obtained showed the presence of FAME referring as biodiesel, indicating that transesterification reaction had occurred during the extraction process. The results showed that the biodiesel yield was obtained at optimum conditions of 280 °C, 12 MPa, 30 min and 1:40 (w/v) were 97.9%.

Highlights

Vegetable oil methyl esters, commonly referred to as biodiesel are prominent candidates as alternative to diesel fuels [1]
The results indicated that an extension of the reaction time from 30 to 35 min had leads to a reduction in the biodiesel yield (93.1%)
The results indicated that the percent of biodiesel yield obtained at temperatures of 280 °C, pressures of 12.7 MPa, reaction time of 30 min and at various seeds-to-methanol ratio (1:15 – 1:45 w/v) was in the range of 89.0 – 97.9%, with maximum yields at 1:40 w/v

Summary

Introduction

Commonly referred to as biodiesel are prominent candidates as alternative to diesel fuels [1]. The vegetable oils, as alternative engine fuels, are all extremely viscous with viscosities ranging from 10 to 20 times greater than that of petroleum diesel fuel [2]. Inedible vegetable oils, mostly produced by seed-bearing trees and shrubs can provide as alternative for biodiesel sources. Among the various renewable energy choices, seed oil crops especially the Jatropha curcas L. has a high potential to meet with the increasing requirements of petroleum and its products. It is significant to point out that, the inedible vegetable oil of Jatropha curcas has the requisite potential of providing a promising and commercially viable alternative to diesel oil since it has desirable physicochemical and performance characteristics comparable to diesel

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