The Kinetics of the Esterification of Free Fatty Acids in Jatropha Oil using Glycerol based Solid Acid Catalyst
K. N. Prasanna Rani 1 * , T. S. V. R. Neeharika 2, G. Harsha Vardhan 2, T. Prathap Kumar 3, B. L. A. Prabhavathi Devi 3
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1 Center for Environmental Engineering and Fossil Fuels, CSIR-Indian Institute of Chemical Technology, Hyderabad – 500007, INDIA
2 Centre for Lipid Science and Technology, CSIR-Indian Institute of Chemical Technology, Hyderabad – 500007, INDIA
3 Process Engineering and Technology Transfer Division, CSIR-Indian Institute of Chemical Technology, Hyderabad – 500007, INDIA
* Corresponding Author

Abstract

The studied work presents the kinetics of the esterification of Free Fatty Acids (FFA) in jatropha oil with methanol (Alc) using glycerol based solid acid catalyst (SAC) at varying catalyst mass concentrations from 2.5 to 4.0 %, temperature 50-65 °C that is upto refluxing temperature and atmospheric pressure and Alc-FFA mole ratios ranging from 7.2:1 to 28.8:1 with respect to the FFA present in the oil matrix. The optimized esterification parameters were observed as 3.5% mass concentration of glycerol based SAC with 21.6:1, Alc-FFA mole ratio at temperature of 65 °C for a time period of 4 h which provided a conversion of about 97.03%. Based on the experimental results a second order kinetic model is proposed. The temperature influence on the rate of the reaction, Arrhenius constants and activation energies were evaluated. The reaction heat and energy of activation for the reaction were found to be 10.315 kcal/mol and 11.38 kcal/mol respectively.

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Article Type: Research Article

https://doi.org/10.29333/ejosdr/7594

EUR J SUSTAIN DEV RE, 2020 - Volume 4 Issue 2, Article No: em0116

Publication date: 25 Jan 2020

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