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This paper presents the potential of limestone based catalyst for transesterification of high free fatty acid FFA rubber seed oil RSO. Pre-calcinated limestone known as clinker was activated using methanol and transesterification was performed under reflux with constant stirring. Mineral composition of the catalyst was analysed using x-ray fluorescence XRF with in build x-ray diffraction XRD. The rubber seed oil was obtained using both microwave and soxhlet extraction using hexane as solvent. FFA content and fatty acid methyl ester content were determined using gas chromatography mass spectrometry GC-MS. The results showed an efficient conversion up to 96.9% of high FFA rubber seed oil to biodiesel. The results suggest that the catalyst employed in this work is not negatively affected by moisture and free fatty acids and can be recycled very easily without significant loss in its activity. The highest conversion of 96.9% was achieved from catalyst activated at 700°C, with catalyst loading of 5 wt. %; methanol to oil molar ratio of 5:1; reaction temperature of 65°C and reaction time of 4 hours. The biodiesel produced in this work is within the limits of specification described by American standard test method ASTM D6751.



KEYWORDS

Biodiesel; Microwave Extraction; Cement Clinker; Rubberseed Oil

Cite this paper

J. Gimbun, S. Ali, C. Charan Kanwal, L. Shah, N. Ghazali, C. Cheng and S. Nurdin -Biodiesel Production from Rubber Seed Oil Using A Limestone Based Catalyst,- Advances in Materials Physics and Chemistry, Vol. 2 No. 4B, 2012, pp. 138-141. doi: 10.4236-ampc.2012.24B036.





Autor: Jolius Gimbun, Shahid Ali, Chitra Charan Suri Charan Kanwal, Liyana Amer Shah, Nurul Hidayah Muhamad Ghazali, Chin Kui Cheng, Sai

Fuente: http://www.scirp.org/



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