Optimization of catalyst-free production of biodiesel from Ceiba pentandra (kapok) oil with high free fatty acid contents

Ong, Lu Ki, Effendi, Chintya, Kurniawan, Alfin, Lin, Chun Xiang, Zhao, Xiu Song and Ismadji, Suryadi (2013) Optimization of catalyst-free production of biodiesel from Ceiba pentandra (kapok) oil with high free fatty acid contents. Energy, 57 615-623. doi:10.1016/j.energy.2013.05.069


Author Ong, Lu Ki
Effendi, Chintya
Kurniawan, Alfin
Lin, Chun Xiang
Zhao, Xiu Song
Ismadji, Suryadi
Title Optimization of catalyst-free production of biodiesel from Ceiba pentandra (kapok) oil with high free fatty acid contents
Formatted title
Optimization of catalyst-free production of biodiesel from Ceiba pentandra (kapok) oil with high free fatty acid contents
Journal name Energy   Check publisher's open access policy
ISSN 0360-5442
1873-6785
Publication date 2013-08-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.energy.2013.05.069
Volume 57
Start page 615
End page 623
Total pages 9
Place of publication London, United Kingdom
Publisher Elsevier
Language eng
Formatted abstract
Catalyst-free biodiesel production from non-edible Ceiba pentandra (kapok) oil via supercritical methanol transesterification was demonstrated in this work. The supercritical transesterification experiments were performed in a batch reactor at temperatures of 250–350 °C, pressures of 10–18 MPa, reaction times of 120–600 s, and methanol to oil molar ratios of 15:1–35:1. Response surface methodology (RSM) and four-way analysis of variance (ANOVA) were applied for the design and optimization of the experiments with respect to temperature, pressure, reaction time, and molar ratio of methanol to oil simultaneously. The response (i.e., FAME yield) was fitted by a quadratic polynomial regression model using least square analysis in a five-level-four-factor central composite design (CCD). The optimum conditions were found as follows: methanol to oil molar ratio of 30:1, temperature of 322 °C, pressure of 16.7 MPa, and reaction time of 476 s with FAME (fatty acid methyl ester) yield of 95.5%. The significance of the reaction parameters toward FAME yield was in the order of methanol to oil molar ratio > reaction time > pressure > temperature.
Keyword Supercritical transesterification
Methyl ester
Statistical design
Response plot
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2014 Collection
 
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