Acid and Base Catalyzed Transesterification of Animal Fats to Biodiesel

Document Type : Research Article


Department of Chemistry and Biochemistry, University of Agriculture, 38040, Faisalabad, PAKISTAN


The present study has been focused on the acid and base transesterification of animal fats (dairy cow and beef) to produce biodiesel by varying process parameters such as catalyst amount, catalyst nature, reaction time and temperature. The maximum biodiesel yield after acid catalysis was 94.1 ± 2.43 and 98.4 ± 2.3 percent for dairy cow and beef tallow, respectively. The quantity of biodiesel obtained after base catalysis was comparatively lower than obtained in case of the acid catalysis. The optimum conditions for biodiesel production using acid catalysis were: 2.5 g of conc. H2SO4, 24 h of reaction time and 50 °C for dairy cow fat and 2.5 g of conc. H2SO4, 6 h of reaction time and 60 °C for beef fat. The amount of biodiesel obtained from beef tallow in the present study was much higher than earlier reported yields. The evaluation of transesterification process was followed by gas chromatographic analysis of tallow fatty acid esters (biodiesel) at optimal conditions. The fuel properties of biodiesel thus obtained accomplished the requirements of both the American and European standards for biodiesel.  


Main Subjects

[1] Noureddin, H., Gao, X., Philkane, R.S., Immoblized Pseudomona Cepacia Lipase Biodiesel Fuel Production from Soyabean Oil, Bioresour. Technol., 96, 769 (2005).
[2] Balaco, V.M., Paiva, A.L., Malcata, F.X., Bioreactors with Immobilized Lipases: State of Art, Enzyme Microb. Technol., 18, 392 (1996).
[3] Ali, Y., Hanna, M.A., Leviticus, L.I., Emissions and Power Characteristics of Diesel Engine on Methyl Soyate and Diesel Fule Blends, Bioresour. Technol., 52, 185 (1995).
[4] Schumacher, L.G., Borgelt, S.C., Fossen, D., Goctz, W., Hires, W.G., Heavy-Duty Engine Exhaust Emission Test Using Methyl Ester Soyabean Oil/Diesel Fuel Blend, Bioresour. Technol., 57, 31 (1996).
[5] Mittelback, M., Tritlhart, P., Diesel Fuel Derived from Vegetable Oil, III. Emission Tests Using Methyl Esters of Used Frying Oil, J. Am. Oil. Chem. Soc., 65, 1185 (1988).
[6] Bruwer, J.J., Boshoff, B,V.D., Hugo, F.J.C., Fuls, J., Hawkins, C., Walt, A.N., Plessis, L.M., Agriculture Energy, ASAE Publication 4-81, American Society of Agriculture Engineers, St Joseph MI, 2, 385 (1981).
[7] Ali, Y., Hanna, M.A., Cuppett, S.L., Fuel Properties of Tallow and Soybean Oil Esters, J. Am. Oil. Chem. Soc., 72, 1557 (1995).
[8] Natusch, D.F.S., Richardson, D.W., Joyce, R.J., Methyl Ester of Tallow as a Diesel Extender, In: Proceedings of the VI International Symposium on Alcohol Fuels Technology, May 21-25, Ottawa, Canda, 1, 340-346 (1984).
[9] Clark,  S.J., Wagner, L., Schrock,  M.D., Piennaar, P.G., Methyl and Ethyl Esters of Tallow As A Renewable Fuels for Diesel, J. Am. Oil. Chem. Soc., 61, 1632 (1984).
[10] Wyatt, V.T., Hess, M.A., Dunn, R.O., Foglia, T.A., Haas, M.J., Marmer, W.N., Fuel Properties and Nitrogen Oxide Emission Levels of Biodiesel Produced from Animal Fats, J. Am. Oil. Chem. Soc., 82, 585 (2005).
[11] Subramanian,  K. A.,  Singal,  S. K.,  Saxena,  M., Singhal, S., Utilization of Liquid Biofuels in Automative Diesel Engines: An Indian Perspective, Biomass Bioenerg., 29, 65 (2005).
[12] Openshaw, K., A Review of Jatroha Curcas:An Oil Plant of Unfulfilled Promise, Biomass Bioenerg., 19, 1 (2000).
[13] Nisworo, A. P., Biodiesel by Supercritical Tran-sesterification: Process Design and Economic Feasibility, Twaio Graduation Project Thesis Report, Eindhoven University of Technology, Eindhoven, Netherland, (2005).
[14] van Kasteren, J.M.N., Nisworo, A.P., A Process Model to Estimate the Cost of Industrial Scale Biodiesel Production from Waste Cooking Oil by Supercritical Transesterification, Resour. Conserv. Recy., 50, 442 (2007).
[15] Zhang, Y., Dube, M.A., McLean, D.D., Kates, M., Biodiesel Production from Waste Cooking Oil, 1. Process Design and Technological Assessment, Bioresour. Technol., 89, 1 (2003).
[16] Zhang, Y., Dube, M.A., McLean, D.D., Kates, M., Biodiesel Production from Waste Cooking Oil, 2. Economic Assessment and Sensitivity Analysis, Bioresour. Technol., 90, 229 (2003).
[17] Rice,  B.,  Frohlich,  A.,  Leonard,  R.,  Teagasc, Korbitz, W., Bio-Diesel Production Based on Waste Cooking Oil: Promotion of the Establishment of An Industry in Ireland, Altener Contract No. XVII/4.1030/AL/77/95/IRL. Final Report (1997).
[18] Peterson, C. L.,  Reece, D. L.,  Hammond, B.J ., Thompson, J.C., Processing Characterization and Performance of Eight Fuels from Lipids, Appl. Eng. Agric., 13, 71 (1997).
[19] Bailer, J., Hödl, P., Mittelbach, M., Handbook of Analytical  Testing  Methods  for  Fatty Acid Methyl Esters Used as Diesel Fuel Substitute, ISBN: 3 9014 5700 3 (1994).
[20] Krisnangkura, K., A Simple Method for Estimation of Cetane Index of Vegetable Oil Methyl Esters, J. Am. Oil. Chem. Soc., 63, 552 (1986).
[21] Bhatti, H.N., Hanif, M.A., Qasim, M., Rehman, A., Biodiesel Production from Waste Tallow, Fuel, 87, 2961 (2008).
[22] Miao,  X.,  WU,  Q.,  Biodiesel  Production  from Hetertrophic Microalgal Oil, Bioresour. Technol., 97, 841 (2006).
[23] Encinar, J. M., Gonzalez, J.F., Sabio, E., Ramiro, M.J., Preparation and Properties of Biodiesel from Cynara cardunculus L., Ind. Eng. Chem. Res., 38, 2927 (1999).
[24] Freedman, B., Pryde, E.H., Mounts, T.L., Variables Affecting the Yields of Fatty Acid Esters from Transesterified Vegetable Oil, J. Am. Oil. Chem. Soc. 61, 1638 (1984).
[25] Dorado, M.P, Ballesteros, E., Lopez, F.J, Mittelbach, M., Optimization of Alkali-Catalyzed Transester-fication of Brasssica carinata Oil for Biodiesel Production, Energ. Fuel, 18, 77 (2004).
[26] Meher, L. C., Dharmagadda, V. S. S., Naik, S. N., Preparation of Biodiesel from Crude Oil of Pongamia pinnata, Bioresour, Technol., 96, 1425 (2005).
[27] Gerpen, J.H.V., Hammond, E.G., Johnson, L.A., Marley, S.J., Yu, L., Lee, I., Monyem, A., Determining the Influence of Contaminants on Biodiesel Properties, Final Report Prepared for: The Lowa Soybean Promotion Board, Lowa State University, USA (1996).