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Production of Biodiesel from Oleic Acid and Methanol by Reactive Distillation

*Kusmiyati Kusmiyati  -  Chemical Engineering Department, Faculty of Engineering, University Muhammadiyah Surakarta, Jl. A. Yani Tromol Pos I, Surakarta, Indonesia
Agung Sugiharto  -  Chemical Engineering Department, Faculty of Engineering, University Muhammadiyah Surakarta, Jl. A. Yani Tromol Pos I, Surakarta, Indonesia

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Biodiesel is an alternative diesel fuel that is produced from vegetable oils and animal fats. Generally, it is formed by transesterification reaction of triglycerides in the vegetable oil or animal fat with an alcohol. In this work, esterification reaction was carried out using oleic acid, methanol and sulphuric acid as a catalyst by reactive distillation method. In order to determine the best conditions for biodiesel production by reactive distillation, the experiments were carried out at different temperature (100 0C, 120 0C, 150 0C and 180 0C) using methanol/oleic acid molar ratios (1:1, 5:1, 6:1, 7:1, 8:1), catalyst/ oleic acid molar ratios (0.5%wt, 1%wt, 1.5%wt and 2%wt) and reaction times (15, 30, 45, 60, 75 and 90 minutes). Results at temperature 180 0C, methanol/ oleic acid molar ratio of 8:1, amount of catalyst 1% for 90 minute reaction time gives the highest conversion of oleic acid above 0.9571. Biodiesel product from oleic acid was analysed by ASTM (American Standard for Testing Material). The results show that the biodiesel produced has the quality required to be a diesel substitute. © 2010 BCREC UNDIP. All rights reserved.

(Received: 1st January 2010, Revised: 18th March 2010; Accepted: 18th March 2010)

[How to Cite: K. Kusmiyati, A. Sugiharto. (2010). Production of Biodiesel from Oleic Acid and Methanol by Reactive Distillation. Bulletin of Chemical Reaction Engineering and Catalysis, 5(1): 1-6. doi:10.9767/bcrec.5.1.7103.1-6]

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Keywords: Biodiesel; reactive distillation; oleic acid; esterification

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