EFFECT OF TEMPERATURE AND PERCENTAGE OF INITIAL CATALYST ON THE IN-SITU PRODUCTION OF BIO-DIESEL FROM CASTOR OIL BEAN SEED USING RESPONSE SURFACE METHODOLOGY
DOI:
https://doi.org/10.51406/jnset.v10i1.1362Keywords:
In-situ, Trans-esterification, Biodiesel, Castor bean seed, Response surface, Modeling.Abstract
The use of vegetable oil and animal fats for biodiesel production has recently become a great concern because of the competition with food materials. As the demand for vegetable oil increase tremendously in recent years it has become impossible to justify the use of these oils for fuel production. In-situ trans-esterification process uses the oil (triglycerides) in the oil seed directly without the need for initial extraction as compared with the conventional trans-esterification. Castor oil bean seed contains between 35 and 55% oil and does not compete with food grade oil because of the seed’s toxicity. This study evaluated the effect of temperature and percentage of initial catalyst on yield of castor ethyl ester. Raw castor oil bean seed kernel at moisture content of 4.68 % (db) was subjected to in-situ trans-esterification in a batch processor with ethanol as the solvent and sodium hydroxide as the catalyst. Central composite design (CCD) of the Response surface methodology was applied to evaluate the main and interactive effects of initial catalyst amount (0.5 – 1.5%) and reaction temperature (40 – 70OC), on yield of castor ethyl-ester, at reaction time of 120 minutes and alcohol-seed weight ratio of 1:1. A quadratic non-linear polynomial model was obtained to describe the effect of the factors on yield. The model was significant (P< 0.05) with a non- significant Lack-of-Fit value (P< 0.05) and R2 value of 0.944. Second order response surfaces and contour plots obtained from the model revealed that initial catalyst amount was the more effective factors on yield while reaction temperature had less effect. The Temperature–percentage of initial catalyst interaction was small and negative, due to the combined effects of formation of by-products (soaps) and saponification. The biodiesel produced from ground castor oil bean seed during this study met the requirements of ASTM standard D6751-02 but specific gravity was higher than the ASTM standard confirming that biodiesel produced from castor bean seed using the in-situ technique can be used as replacement fuel for fossil diesel.
References
Asadaukas, S., Erhan S.Z. 1999. Depression of pour points of vegetable oils by blending with diluents used for biodegradable lubricants. Journal of American Oil Chemists Society, 76: 313 – 316.
ASTM, 2004. American Society for Testing and Materials, Standard Specification for Biodiesel Fuel (B100). Blend stock for Distillate Fuels. Designation D6751-02. ASTM International, West Conshohocken, USA.
Bender, M. 1999. Economic feasibility review for community-scale farmer cooperatives for biodiesel. Bioresource Technology. 70:81.
Box, G., Hunter, J. 1978. Response Surface Methods. In: Statistics for Experiments, Part IV: Building Models and Using Them. John Wiley & Sons, New York.
Canakci, M., Van Gerpen, J. 2003. Comparison of engine performance and emissions for petroleum diesel fuel, yellow grease biodiesel, and soybean oil biodiesel. Trans. ASAE 46: 937–944.
Chitra, P., Venkatachalam, P., Sampathrajan, A. 2005. Optimisation of experimental conditions for biodiesel production form alkali catalyzed trans-esterification of jatropha curcus oil. Energy for Sustainable Development, 9(3): 13 – 19.
Cvengros, J., Palogova, J., Cvengrosova, Z. 2006. Properties of alkyl esters base on castor oil. Eur. Journal of Lipid Science and Technology. 108: 629 – 635pp.
Dorado, M.P., Ballestero, E., Almeida, J.A., Schellet, C., Lohrlein, H.P., Krouse, R. 2002. An alkali catalyzed trans-esterification process for high free fatty acid oils. ASAE 45(3): 525 – 529.
ECN. 2005. Energy Commission of Nigeria. Renewable Energy Master Plan, Executive Summary.
Freedman, B., Pryde, E.H., Mounts, T.L. 1984. Variables affecting the yield of fatty ester from trans-esterified vegetable oils. Journal of American Oil Chemists Society, 61(10): 1638 -1643.
Haas, M.J., Scott, K.M. 2007. Moisture removal substantially improves the efficiency of in-situ biodiesel production from soybeans. Journal of American Oil Chemists Society, 84: 197.
Haas, M.J., McAloon, A.J., Yee, W.C., Foglia, T.A. 2006. A process model to estimate biodiesel production costs. Bioresources Technology, 97: 671- 676.
Haas, M.J., Scott, K.M., Marmer, W.N., Foglia, T.A. 2004. In-situ alkaline trans-esterification: An effective method for the production of fatty acid esters from vegetable oils. Journal of American Oil Chemists Society, 81: 83 – 89.
Harrington, K.J., D’Arcy-Evans, C. 1985. A comparison of conventional and in-situ methods of trans-esterification of seed oil from a series of sunflower cultivars. Journal of American Oil Chemists Society. 62: 1009 - 1015.
Heidbreder, A., Hofer, R., Grutzmacher, R., Westfechtel, A., Blewett, C.W. 1999. Oleochemical products as building blocks for polymer. Research Papers. Fett / Lipids. Wiley-Vch Verlag GmbH.D-69451 Weinheim 101 Nr. 11: 418-424.
Holmberg, W.C., Peeples, J.E. 1994. Biodiesel: A Technology, Performance, and Regulatory Overview, National SoyDiesel Development Board: Jefferson City, MO, USA.
Khalil, N.C., Leite, L.C.F. 2006. Process for producing biodiesel fuel using triglycerides-rich oleaginous seed directly in a trans-esterification reaction in the presence of an alkaline alkoxide catalyst. US Patent No US 7,112,229 B2.
Khan. K.A. 2002. Research into biodiesel kinetic and catalytic development. Unpublished Theses, Department of Chemical Engineering. University of Queensland, Australia.
Ma, F., Hanna, M.A. 1999. Biodiesel Production: A review. Bioresources Technology, 70: 1-15.
Ma, F., Clements, L.D., Hanna, M.A .1999. The Effect of mixing on trans-esterification of beef tallow. Bioresource Technology, 69: 289 – 292.
Ma, F., Clements, L.D., Hanna, M.A., 1998. The effect of catalyst, free fatty acid, and water on trans-esterification of beef tallow. American Society of Agricultural Engineers, 41: 1261 -1264.
Meher, L.C., Sagar, D.V., Naik, S.N. 2006. Technical aspects of biodiesel production by trans-esterification—a review. Renewable and Sustainable Energy Review, 10: 248–268.
Obibuzor, J.U., Abigor, R.D., Okiy, D.A. 2002. Trans-esterification of the oil palm fruit forms using in-situ technique. RiV. Ital. Sostanze Grasse, 79: 319.
Ogunleye, O.O., Oyawale, F.A., Suru, E. 2008. Effects of castor oil on the physical properties of polyether based Flexible Polyurethane foam. Advances in Natural and Applied Sciences, 2(1): 10 – 15.
Ogunniyi, D.S. 2006. Castor oil: A vital industrial raw material. Bioresources Technology, 97(9): 1086 – 1091.
Ozgul, Y,S., Turkay, S.F.A. 2003. Monoalkylesters from rice bran oil by in-situ esterification. Journal of American Oil Chemists Society, 80: 81.
Pinto, A.C., Guarieiro, L.N., Rezeede, M.J.C., Ribeiro, N.M., Torres, E.A., Lopes, W.A., Pereira, P.P., de Andrade, J.B. 2005. Biodiesel: An Overview. Journal of Brazilian Chemical Society, 16(6b): 1313 – 1330.
Raheman, H., Phadatare, A.G. 2004. Diesel engine emissions and performance from blends of Karanja methyl ester and diesel. Biomass Bioenergy, 27: 393–397.
Ramadhas, A.S., Jayaraj, S., Muraleed-haran C. 2005. Biodiesel production from high free fatty acid rubber seed oil. Fuel 84: 335 - 340.
Sharma, Y.C., Singh, B., Upadhyay, S.N. 2008. Advancements in development and characterization of biodiesel: A review. Fuel. 87: 2355 – 2373.
Silver-Marinkovic, S., Tomasevic, A. 1998. Trans-esterification of sunflower oil in-situ. Fuel. 77: 1389 – 1395.
Srivastava, A., Prasad, R. 2000. Triglycerides-based diesel fuels. Renewable and Sustainable Energy Reviews. 4: 111-133.
Stat-Ease. 2007. A design of experiment software. Stat-Ease, Incorporation. 2021 East Hennepin Avenue, Suite 480 Minneapolis, MN 55413.
Van Gerpen, J., Perterson, C.L., Georing, C.E. 2007. Biodiesel: An alternative fuel for compression ignition engines. ASAE Distinguished Lecture Series Number 31. 11 – 14th February 2007. Louisville, Kentucky. USA.
Van Gerpen, J., Shanks, B., Pruszko, R., Clements, D., Knothe, G. 2004. “Biodiesel Production Technologyâ€. Report from Iowa State University for the National Renewable Energy Laboratory, NREL/SR-510-36244.
Weiss, E.A. 1983. Oil seed crops, Tropical Agriculture Series. Longman. 31-53pp.
Zeng, J.L., Wang, X.D., Zhao, B., Sun, J., Wang, Y.C. 2009. Rapid in-situ trans-esterification of sunflower oil. Ind. Eng. Chem. Res., 48: 850 -856.
