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Microwave-assisted noncatalytic esterification of fatty acid for biodiesel production: A kinetic study

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Version 2 2024-06-06, 01:03
Version 1 2022-02-03, 08:17
journal contribution
posted on 2024-06-06, 01:03 authored by Hoang Chinh NguyenHoang Chinh Nguyen, FM Wang, KK Dinh, TT Pham, HY Juan, NP Nguyen, HC Ong, CH Su
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.

History

Journal

Energies

Volume

13

Article number

ARTN 2167

Pagination

1 - 15

Location

Basel, Switzlerland

Open access

  • Yes

ISSN

1996-1073

eISSN

1996-1073

Language

English

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

9

Publisher

MDPI