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Application of Tocopherol as Antioxidant to Reduce Decomposition Process on Palm Oil Biodiesel

Authors: Supriyono, Sumardiyono, Rendy J. Pramono


Biodiesel is one of the alternative fuels promising for substituting petrodiesel as energy source which has an advantage as it is sustainable and eco-friendly. Due to the raw material that tends to decompose during storage, biodiesel also has the same characteristic that tends to decompose during storage. Biodiesel decomposition will form higher acid value as the result of oxidation to double bond on a fatty acid compound on biodiesel. Thus, free fatty acid value could be used to evaluate degradation of biodiesel due to the oxidation process. High free fatty acid on biodiesel could impact on the engine performance. Decomposition of biodiesel due to oxidation reaction could prevent by introducing a small amount of antioxidant. The origin of raw materials and the process for producing biodiesel will determine the effectiveness of antioxidant. Biodiesel made from high free fatty acid (FFA) crude palm oil (CPO) by using two steps esterification is vulnerable to oxidation process which is resulted in increasing on the FFA value. Tocopherol also known as vitamin E is one of the antioxidant that could improve the stability of biodiesel due to decomposition by the oxidation process. Tocopherol 0.5% concentration on palm oil biodiesel could reduce 13% of increasing FFA under temperature 80 °C and exposing time 180 minute.

Keywords: Antioxidant, biodiesel, decomposition, oxidation, tocopherol.

Digital Object Identifier (DOI):

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[1] Berrios, M. Siles, J., Martın, M.A., Martın, A., A kinetic study of the esterification of free fatty acids (FFA) in sunflower oil, Fuel, 86 (2007) 2383–2388
[2] Costa, J.F., Almeida, M.F., Ferraz, M.C.M.A.Dias, J.M., Biodiesel production using oil from fish canning industry wastes, Energy Conversion and Management, 74 (2013) 17–23
[3] Azcan, N., Danisman, A., Alkali catalyzed transesterification of cottonseed oil by microwave irradiation, Fuel, 86 (2007) 2639–2644.
[4] Biswas, S., Heindselmen, K., Wohltjen, H., Staff, C., Differentiation of vegetable oils and determination of sunflower oil oxidation using a surface acoustic wave sensing device, Food Control, 15 (2004) 19–26.
[5] Canoira, L., Alcantara, R., Martınez, M.J.G., Jesus Carrasco, J., Biodiesel from Jojoba oil-wax: Transesterification with methanol and properties as a fuel, Biomass and Bioenergy 30 (2006) 76–81.
[6] Motasemi, F., Ani, F.N., A review on microwave-assisted production of biodiesel, Renewable and Sustainable Energy Reviews, 16 (2012) 4719-4733.
[7] Castro, W., Perez, J.M., Erhan, S.Z., and Caputo, F., A Study of the Oxidation and Wear Properties of Vegetable Oils: Soybean Oil Without Additives, JAOCS, Vol. 83, no. 1 (2006).
[8] Herbinet, O., Pitz, W.J., Westbrook, C.K., Detailed chemical kinetic oxidation mechanism for a biodiesel surrogate, Combustion and Flame, 154 (2008) 507–528.
[9] Knothe, G., Dependence of biodiesel fuel properties on the structure of fatty acid alkyl esters, Fuel Processing Technology, 86 (2005) 1059– 1070.
[10] Sharma, Y.C., Singh, B., Upadhyay, S.N., Advancements in development and characterization of biodiesel: A review, Fuel, 87 (2008) 2355–2373.
[11] Marinkovic, S.S., and Tomasevic, A., Transesterification of sunflower oil in situ, Fuel, 77, (12) (1998) 1389-1391.
[12] Marchetti, J.M. and Errazu, A.F., Esterification of free fatty acids using sulfuric acid as catalyst in the presence of triglycerides, Biomass and Bioenergy, 32 (2008) 892 – 895.
[13] Lopez, D.E., Goodwin, J.G.J., Bruce, D.A., Furuta, S., Esterification and transesterification using modified-zirconia catalysts, Applied Catalysis A: General, 339 (2008) 76-83.
[14] Sarin A., Arora R., Singh N.P., Sharma M., Malhotra R.K., Influence of metal contaminants on oxidation stability of Jatropha biodiesel, Energy 34 (2009) 1271–1275
[15] Leung, D.Y.C., Koo, B.C.P., and Guo, Y., Degradation of biodiesel under different storage conditions, Bioresource Technology, 97 (2006) 250–256
[16] Bondioli, P., Gasparoli, A., Bella, L.D., Tagliabue, S., Evaluation of biodiesel storage stability using reference methods, Eur. J. Lipid Sci. Technol., 104 (2002) 777–784 777.
[17] Andras F., Sigurd S., The influence of tocopherols on the oxidation stability of methyl esters. Journal of the American Oil Chemists Society 2007; 84(6):579–85.
[18] Shahidi, F., Bailey’s Industrial Oil and Fat Product, John Wiley & Son’s, 2005
[19] Dunn, R.O., Effect of antioxidants on the oxidative stability of methyl soyate (biodiesel), Fuel Processing Technology, 86 (2005) 1071– 1085.