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Acceleration of Acid-catalyzed Transesterification Reaction by Minimizing Glycerol to Fatty Acid Methyl Ester Ratio


Paper Type 
Contributed Paper
Title 
Acceleration of Acid-catalyzed Transesterification Reaction by Minimizing Glycerol to Fatty Acid Methyl Ester Ratio
Author 
Watcharin Rattanapong, Kulchanat Prasertsit and Chakrit Tongurai
Email 
kulchanat.k@psu.ac.th
Abstract:

This work aimed to study the acceleration of a slow acid catalyzed transesterification process, retarded by poor blending of two components in a liquid-liquid reaction. Reducing the solution viscosity was achieved by adding fatty acid methyl ester (FAME) into refined palm oil at the beginning of the reaction could improve miscibility and enhance the conversion of triglyceride to FAME. The study also focused on glycerol to FAME ratio on adding FAME. The results show that a lower glycerol to FAME ratio in a conventional reactor increases FAME generation. This can be applied in the two-step transesterification process by maintaining a low glycerol to FAME ratio. To achieve the required ester content of greater than 96.5%, the proposed second step transesterification in a multistage reactor with glycerol removal can reduce the reaction time by up to 91.2% in the second step using heterogeneous acid catalyst, or by 57.5% using acid catalyst in a conventional reactor, respectively.

Start & End Page 
1381 - 1393
Received Date 
2021-02-22
Revised Date 
2021-05-12
Accepted Date 
2021-05-17
Full Text 
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Correspondence & Author Name 
Keyword 
two-phase liquid-liquid reaction, acid-catalyzed transesterification, miscibility, phase separation, glycerol removal
Volume 
Vol.48 No.5 (September 2021)
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Chiang Mai Journal of Science

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