Parameters Affecting the Extraction Process of Jatropha curcas Oil Using a Single Screw Extruder


  • Ali Nurrakhmad Siregar Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi,
  • Jaharah A. Ghani Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi,
  • Che Hassan Che Haron Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi,
  • Muhammad Rizal Department of Mechanical Engineering, Faculty of Engineering, Syiah Kuala University (UNSYIAH), 23111, Banda Aceh



The most commonly used technique to separate oil and cake from J. curcas seeds is mechanical extraction. It uses simple tools such as a piston and a screw extruder to produce high pressure, driven by hand or by engine. A single screw extruder has one screw rotating inside the barrel and materials simultaneously flow from the feed to the die zone. The highest oil yield can be obtained by a well-designed oil press as well as finding the optimum conditions for all parameters involved during the extraction process. The influence of the parameters in a single screw extruder was studied using finite element analysis and computational fluid dynamics simulation with ANSYS POLYFLOW. The research focused on predicting the velocity, pressure and shear rate in the metering section that influenced the screw rotational speed and mass flow rate. The obtained results revealed that increasing the screw rotational speed will increase the pressure, velocity and shear rate. Meanwhile, increasing the mass flow rate results in decreasing the pressure while the velocity and shear rate remain constant.


Download data is not yet available.


Heller, J., Physic Nut. Jatropha curcas L. Promoting the Conservation and Use of Underutilized and Neglected Crops, Rome, Institute of Plant Genetics and Crop Plant Research (IPGRI), Gatersleben/International Plant Genetic Resources Institute, 1996.

Achten, W.M.J., Verchot, L., Franken, Y.J., Mathijs, E., Singh, V.P., Aerts, R. & Muys, B. Jatropha Bio-Diesel Production and Use. Biomass and Bioenergy, 32(12), pp. 1063-1084, 2008.

Basili, M. & Fontini, F., Biofuel from Jatropha curcas: Environmental Sustainability and Option Value, Ecological Economics, 78, pp. 1-8, 2012.

FACT, The Jatropha Hand Book from Cultivation to Application, Eindhoven, the Netherlands, FACT Foundation, 2010.

Karaj, S. & M1/4ller, J., Optimizing Mechanical Oil Extraction of Jatropha Curcas L. seeds with Respect to Press Capacity, Oil Recovery and Energy Efficiency. Industrial Crops and Products, 34(1), pp. 1010-1016, 2011.

Beerens, P., Screw-pressing of Jatropha Seeds for Fuelling Purposes in Less Developed Countries, Master Thesis, Eindhoven, Netherlands,Technology University in Eindhoven, 2007.

ANSYS, ANSYS POLYFLOW User's Guide. in ANSYS POLYFLOW User's Guide,ANSYS, Inc., Canonsburg, United States, 2011.

Connelly, R.K. & Kokini, J.L., Examination of the Mixing Ability of Single and Twin Screw Mixers Using 2D Finite Element Method Simulation With Particle Tracking, Journal of Food Engineering, 79(3),pp. 956-969, 2007.

Bi, C. & Jiang, B., Study of Residence Time Distribution in a Reciprocating Single Screw Pin-Barrel Extruder. Journal of Materials Processing Technology, 209(8), pp. 4147-4153, 2009.

Ghoreishy, M.H.R., Razavi-Nouri, M. & Naderi, G., Finite Element Analysis of a Thermoplastic Elastomer Melt Flow in the Metering Region of a Single Screw Extruder. Computational Materials Science, 34(4), pp. 389-396, 2005.

Pradhan, R.C., Naika, S.N., Bhatnagarb, N. & Vijaya, V.K., MoistureDependent Physical Properties of Jatropha Fruit, Industrial Crops and Products, 29(2-3), pp. 341-347, 2009.

Dhanasekharan, M., Huang, H. & Kokini, J.L., Comparison of the Observed Rhological Properties of Hard Wheat Flour Dough with the Predictions of the Giesekus-Leonov, the White-Metzner, and the PhanThien Tanner Models, Journal of Texture Studies, 30(6), pp. 603-623, 1999.

Cruz, D.O.A. & Pinho, F.T., Analysis of Isothermal Flow of a PhanThien-Tanner Fluid in a Simplified Model of a Single Screw Extruder, Journal of Newtonian Fluid Mechanics, 167-168, pp. 95-105, 2012.

Dhanasekharan, K.M. & J.L. Kokini, Design And Scaling of Wheat Dough Extrusion by Numerical Simulation of Flow and Heat Transfer, Journal of Food Engineering, 60(4), pp. 421-430, 2003.

El-Sadi, H. & Esmail, N. , Simulation of Complex Liquids in Micropump, Microelectronics Journal, 36(7), pp. 657-666, 2005.