Yulia Tri Rahkadima, Qurrota A’yuni


Rice bran as rice milling waste is very promising to be used as raw material of oil producer such as biodiesel oil. The production process with the assistant of microwaves has been studied in this research. The production process was carried out in-situ where the extraction process of rice bran oil and the biodiesel formation reaction occur simultaneously in microwave radiation. Rice bran was obtained from Lamongan area with IR 64 type. The reaction was carried out in microwaves that had been modified by variation of operating conditions including reaction times (10, 30 and 50 min) and weight ratio of rice bran to methanol (1:4, 1:8, 1:12, 1:16 and 1:20). The results obtained are then analyzed by product yield and free fatty acid content. The optimum condition is obtained when the highest yield of the product with the lowest free fatty acid. The results showed that the optimum condition was obtained at reaction time of 30 minutes with the ratio of rice bran: methanol at 1:12.


Transesterification, Rice bran oil, Microwave, In-situ

Full Text:



Bozbas, K. 2008. Biodiesel as an alternative motor fuel: Production and policies in the European Union. Renew. Sust. Energy. Rev. 12, 542-552.

Chen, K.S.; Lin, Y.C.; Hsu, K.H.; Wang, H.K. 2012. Improving Biodiesel Yields from Waste Cooking Oil by Using Sodium Methoxide and A Microwave Heating System. Energy, Vol 38 (1): 151–156.

Demirbas. 2009. A: Global Renewable Energy Projections. Energy Sources, Part B, Vol. 4: 212–224.

Dorado, M.P., Cruz F., Palomar J.M., Lopez F.J. 2006. An Approach to Economics of Two Vegetable Oil-Based Biofuels in Spain. Renew. Energy, Vol. 31: 1231-1237

Fabbri D, Bevoni V, Notari M, Rivetti F. 2007. Properties of A Potential Biofuel Obtained from Soybean Oil by Transmethylation with Dimethyl Carbonate. Fuel, Vol. 86: 690–697.

Gude, V.G., Patil, P, Martinez-Guerra, E, Deng, S., Nirmalakhandan, N. 2013. Review Microwave Energy Potential for Biodiesel Production. Sustainable Chemical Processes, Vol. 1: 55.

Haas M. J., K. M. Scott, W. N. Marmer and T. A. Foglia. 2004. In situ Alkaline Transesterification: An Effective Method for the Production of Fatty Acid Esters from Vegetable Oils. J. Am. Oil Chem. Soc, Vol. 81: 83–89

Hata, S.; Wiboonsirikul, J.; Maeda, A.; Kimura, Y.; Adachi, S., 2008. Extraction of Defatted Rice Bran by Subcritical Water Treatment, Biochemical Engineering Journal, Vol. 40: 44-45.

Musa, I.,A. 2016. The Effects of Alcohol to Oil Molar Ratios and the Type of Alcohol on Biodiesel Production Using Transesterification Process: Egyptian Journal of Petroleum, Vol. 25: 21-31.

Pourali, Omid. Asghari,F.S., Yoshida,H. 2009. Sub-critical Water Treatment of Rice Bran to Produce Valuable Materials. Food chemistry, Vol. 115: 1-7.

Rashid U. and Anwar, F. 2008, Production of Biodiesel Through Base-Catalyzed Transesterification of Sunflower Oil Using an Optimized Protocoll. Energy Fuels, Vol. 22: 1306-1312.

Rittmann. 2008. RE: Opportunities for Renewable Bioenergy Using Microorganisms. Biotechnol Bioengr, Vol. 100: 203–212.

Satyanarayana KG, Mariano AB, Vargas JVC. 2011. A review on Microalgae, A Versatile Source for Sustainable Energy and Materials. Int J Energy Res, Vol. 35: 291–311.

Wang L, Weller CL .2006. Recent Advances in Extraction of Nutraceuticals From Plants. Trends Food Sci Techn, Vol. 17: 300–312.

Zullaikah, S. Lai, C.C. Vali, S.R dan Ju, Y.H. 2005. A Two-Step Acid-Catalyzed Process for The Production of Biodiesel From Rice Bran Oil”, Bioresource Technology, Vol. 96: 1889–1896.



Journal of Research and Technology by Jurnal Teknik Unusida is licensed under a Creative Commons Attribution 4.0 International License. Based on a work at E-ISSN: 2477-6165 | P-ISSN: 2460-5972

Sponsored by:     Creative Commons License