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Article

Microwave-Assisted Noncatalytic Esterification of Fatty Acid for Biodiesel Production: A Kinetic Study

1
Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
2
Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
3
Graduate School of Biochemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
4
School of Information, Systems and Modelling, Faculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, NSW 2007, Australia
*
Authors to whom correspondence should be addressed.
Energies 2020, 13(9), 2167; https://doi.org/10.3390/en13092167
Received: 22 March 2020 / Revised: 23 April 2020 / Accepted: 26 April 2020 / Published: 1 May 2020
(This article belongs to the Special Issue Green Energy Technology)
This study developed a microwave-mediated noncatalytic esterification of oleic acid for producing ethyl biodiesel. The microwave irradiation process outperformed conventional heating methods for the reaction. A highest reaction conversion, 97.62%, was achieved by performing esterification with microwave irradiation at a microwave power of 150 W, 2:1 ethanol:oleic acid molar ratio, reaction time of 6 h, and temperature of 473 K. A second-order reaction model (R2 of up to 0.997) was established to describe esterification. The reaction rate constants were promoted with increasing microwave power and temperature. A strong linear relation of microwave power to pre-exponential factors was also established, and microwave power greatly influenced the reaction due to nonthermal effects. This study suggested that microwave-assisted noncatalytic esterification is an efficient approach for biodiesel synthesis. View Full-Text
Keywords: esterification; biodiesel; noncatalytic reaction; kinetic; microwave irradiation; bioenergy esterification; biodiesel; noncatalytic reaction; kinetic; microwave irradiation; bioenergy
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MDPI and ACS Style

Nguyen, H.C.; Wang, F.-M.; Dinh, K.K.; Pham, T.T.; Juan, H.-Y.; Nguyen, N.P.; Ong, H.C.; Su, C.-H. Microwave-Assisted Noncatalytic Esterification of Fatty Acid for Biodiesel Production: A Kinetic Study. Energies 2020, 13, 2167. https://doi.org/10.3390/en13092167

AMA Style

Nguyen HC, Wang F-M, Dinh KK, Pham TT, Juan H-Y, Nguyen NP, Ong HC, Su C-H. Microwave-Assisted Noncatalytic Esterification of Fatty Acid for Biodiesel Production: A Kinetic Study. Energies. 2020; 13(9):2167. https://doi.org/10.3390/en13092167

Chicago/Turabian Style

Nguyen, Hoang C., Fu-Ming Wang, Kim K. Dinh, Thanh T. Pham, Horng-Yi Juan, Nguyen P. Nguyen, Hwai C. Ong, and Chia-Hung Su. 2020. "Microwave-Assisted Noncatalytic Esterification of Fatty Acid for Biodiesel Production: A Kinetic Study" Energies 13, no. 9: 2167. https://doi.org/10.3390/en13092167

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