Modeling and optimization of biodiesel production from soybean oil

Document Type : Original Article

Authors

1 , Department of Chemical, Petroleum and Gas Engineering, Shiraz University of Technology, Shiraz, Iran

2 Department of Chemical, Petroleum and Gas Engineering, Shiraz University of Technology, Shiraz, Iran

Abstract

Due to the increasing environmental pollution and the reduction of fossil fuel resources, the choice of a suitable alternative for non-renewable fuels has been given much attention. Among several alternative fuels, biodiesel is also clean and is produced from renewable sources. In this work, the mathematical modelling and optimization of the catalytic transesterification process for producing soybean oil biodiesel by MATLAB software and differential evolution algorithm has been investigated. The potassium hydroxide was selected as a homogenous catalyst for transesterification reactions in a batch reactor. Based on the experimental data, a model has been proposed to predict the biodiesel production in the catalyst concentration range of (0.4-1wt%), methanol to oil molar ratio range of (5-12) and temperature range of (25-65 °C). In addition, the unknown kinetic parameters of this model have been calculated. There was a good consistency between the model and experimental data. The modeling results showed that there is a relationship between biodiesel yield and effective parameters (temperature, oil to alcohol molar ratio and catalyst concentration). By increasing the temperature and oil to alcohol molar ratio and decreasing the catalyst concentration, the yield of biodiesel increases. Finally, the model was assisted to find the optimal conditions of transesterification reaction to maximize biodiesel yield. In the optimal conditions (catalyst concentration of 0.4501 wt%, molar ratio of methanol to oil of 15 and temperature of 70°C) the biodiesel yield reached 96.87%.

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References

- مراجع
 
[1]  T.L. Chewand and S. Bhatia, Catalytic processes towards the production of biofuels in a palm oil and oil palm biomass-based biorefinery, Bioresource technology, Vol. 99, No. 17, pp. 7911-7922, 2008.
[2]  I.M. Atadashi, M.K. Aroua, and A.A. Aziz, Biodiesel separation and purification: a review, Renewable Energy, Vol. 36, No. 2, pp. 437-443, 2011.
[3]  J.K. Volkman, S.W. Jeffrey, P.D. Nichols, G.I. Rogers, and C.D. Garland, Fatty acid and lipid composition of 10 species of microalgae used in mariculture, Journal of experimental marine biology and ecology, Vol. 128, No. 3, pp. 219-240, 1989.
[4]  F.J. Gordillo, M. Goutx, F.L. Figueroa, and F.X. Niell, Effects of light intensity, CO2 and nitrogen supply on lipid class composition of Dunaliella viridis, Journal of Applied Phycology, Vol. 10, No. 2, pp. 135-144, 1998.
[5]  L.G. Roberts, and T.J. Patterson, Biofuels, Biomedical Sciences, pp. 469-475, 2014.
[6]  D. Adu-Mensah, D. Mei, L. Zuo, Q. Zhang, and J. Wang, A review on partial hydrogenation of biodiesel and its influence on fuel properties, Fuel, Vol. 251, pp. 660-668, 2019.
[7]  F. Haghighat Shoar and J. Tarighi, review of different biodiesel production methods, conditions, raw materials and technologies, Journal of renewable and new energy, Vol. 8, No. 2, pp. 21-32, 2021.
[8]  S.P. Singh, and D. Singh, Biodiesel production through the use of different sources and characterization of oils and their esters as the substitute of diesel: a review, Renewable and sustainable energy reviews, Vol. 14, No. 1, pp. 200-216, 2010.
[9]  M. Mittelbach, and B. Trathnigg, Kinetics of alkaline catalyzed methanolysis of sunflower oil, Lipid/Fett, Vol. 92, No. 4, pp.145-148, 1990.
[10] D. Ganesan, A. Rajendran, and V. Thangavelu, An overview on the recent advances in the transesterification of vegetable oils for biodiesel production using chemical and biocatalysts, Reviews in Environmental Science and Bio/Technology, Vol. 8, No. 4, p. 367, 2009.
[11] H. Fukuda, A. Kondo, and H. Noda, Biodiesel fuel production by transesterification of oils, Journal of bioscience and bioengineering, Vol. 92, No. 5, pp. 405-416, 2001.
[12] A.V. Marjanović, O.S. Stamenković, Z.B. Todorović, M.L. Lazić, and V.B. Veljković, Kinetics of the base-catalyzed sunflower oil ethanolysis, Fuel, Vol. 89, No. 3, pp. 665-671, 2010.
[13] K. Komers, F. Skopal, R. Stloukal, and J. Machek, Kinetics and mechanism of the KOH—catalyzed methanolysis of rapeseed oil for biodiesel production, European Journal of Lipid Science and Technology, Vol. 104, No. 11, pp.728-737, 2002.
[14] A .C. Pinto, L.L. Guarieiro, M.J. Rezende, N.M. Ribeiro, E.A. Torres, W.A. Lopes, P.A.D.P. Pereira, and J.B.D. Andrade, Biodiesel: an overview, Journal of the Brazilian Chemical Society, No. 16, pp. 1313-1330, 2005.
[15] B. Freedman, R.O. Butterfield, and E.H. Pryde, Transesterification kinetics of soybean oil 1, Journal of the American oil chemists’ society, Vol. 63, No. 10, pp. 1375-1380, 1986.
[16] H. Noureddini, and D. Zhu, Kinetics of transesterification of soybean oil, Journal of the American Oil Chemists' Society, Vol. 74, No. 11, pp. 1457-1463, 1997.
[17] G.F. Zagonel, P.G. Peralta-Zamora, and L.P. Ramos, Production of ethyl esters from crude soybean oil: optimization of reaction yields using a 23 experimental design and development of a new analytical strategy for reaction control, Fuel Chemistry Division Preprints, Vol. 47 No. 1, pp. 363-364, 2002.
[18] I. Jacob, E. Clausen, and D.J. Carrier, Kinetics determination of soybean oil transesterification in the design of a continuous biodiesel production process, Biological and Agricultural Engineering, Undergraduate Honors Theses, 2005.
[19] G. Vicente, M. Martinez, J. Aracil, and A. Esteban, Kinetics of sunflower oil methanolysis, Industrial & Engineering Chemistry Research, Vol. 44, No. 15, pp. 5447-5454, 2005.

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History

  • Receive Date: 14 February 2022
  • Revise Date: 16 April 2023
  • Accept Date: 25 April 2023

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