The Effect of Substrate Types to FAME Conversion on Acid-Catalyzed Transesterification of Crude Rice Bran Oil

Orchidea Rahmaniah

Abstract


Biodiesel is an alkyl ester which is made from vegetable oils or animal fats. Indonesian biodiesel development is an urgent condition. The abundance of Indonesia’s natural sources is not manage well until now, such as rice bran. Rice bran oil is considered to be one of the most nutritious oils due to its favorable fatty acid composition and an unique combination of naturally occurring biologically active and antioxidant compounds. Acid catalyzed are the most suitable methods to produce biodiesel from high fatty acid rice bran oil. This present study was carried out to investigate the effects of substrate types from pure crude rice bran oil compounds on fatty acid methyl ester (FAME) formation. Experimental results shows, reaction rate of fatty acid to FAME was faster compare to triglyceride, incorporated 5%-H2O to pure triglyceride substrat didn’t increase the reaction rate. Rice bran oil high fatty acid content (15-70% FA) reached 85-98% conversion of FAME within 1 hour reaction, while oil with low fatty acid content (3-10% FA) only gives 25-75% conversion. The chain lengths, double bond, degree of saturation and chemical structure of fatty acid did not influence rate reaction of transesterification Fatty acids from different sources shows similar conversions and change in the fatty acids composition has no effect on rate of methanolysis.

Keywords


Acid-Catalyzed; Biodiesel; Rice Bran; Crude Rice Bran Oil; Transesterification

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References


Rachmaniah, Orchidea, Yi-Hsu Ju, Shaik Ramjan Vali, and M. Rachimoellah., “A Preliminary Study of The Potential of Rice Bran Oil as Biodiesel”, Proc. International Seminar & Exhibition Ecological Power Generation: Biomass-Coal Utilization & Fuel Beneficiation, pp. 1-10. 2005.

Rachmaniah, Orchidea, Yi-Hsu Ju, Shaik Ramjan Vali, Ismojowati Tjondronegoro, and Musfil A.S., “A Study of Acid- Catalyzed Transesterification of Rice Bran Oil as Biodiesel Production”, Proc.Youth Energy Symposium, 19th World Energy Congress & Exhibition. 2004.

Freedman,B., E.H. Pryde and T.L. Mounts. , “Variables Affecting the Yields of Fatty Esters from Transes terified Vegetable Oils”, J. Am. Oil Chem. Soc., Vol. 61, pp.1638-1643. 1984

Fukuda, H., A. Kondo, and H. Noda., “Biodiesel Fuel Production by Transesteification of Oils”, J. Biosci. Bioeng., Vol. 92, pp. 405-416. 2001.

Ma, F. and M.A. Hanna., “Biodiesel Production: A Review”, Bioresour. Technol., Vol. 70, pp. 1-15. 1999

Canakci, M., and Gerpen, J. Van. , “Biodiesel Production from Oils and Fats with High Free Fatty Acids”, Transactions of the ASAE., Vol. 44, pp.1429-1436. 2001.

Zhang, Y., Dube, M.A., McLean, D.D., Kates, M., . “Process design and technological assessment, Bioresour Technol”, in Review paper 2003 Biodiesel production from waste cooking oil: 1., Vol. 89, pp.1-16. 2003.

Kaimal, Thengumpilil Narayana Balogopala, Shaik Ramjan Vali, Bhamidipati Venkata Surya Koppeswara Rao, Pradosh Prasad Chakrabarti, Penumarthy Vijayalakshmi, Vijay Kale, Karna Narayana Prasanna Rani, Ongole Rajamma, Potula Satya Bhaskar, Turaga Chandrasekhara Rao., “Origin Problems Encountered in Rice Bran Oil Processing”, Eur. J. Lipid Sci. Technol., Vol 104, pp. 203-211. 2002.

Khan, Adam Karl., “Research into Biodiesel Kinetics and Catalyst Development”, Master Thesis., University of Queensland, Australia. 2002.




DOI: http://dx.doi.org/10.12962/j20882033.v18i3.169

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