Sintesis Biodiesel dari Minyak Jelantah dengan Katalis K2CO3/y-Al2O3

Fitriyani Yetti Handayani, Rochim Bakti Cahyono, Arief Budiman

Abstract


Biodiesel is an environmentally friendly alternative fuels. The price of biodiesel is still relatively expensive due to the high price of raw materials. Thus, cheaper raw materials such as used cooking oils can be used. Used cooking oils can be used to produce biodiesel by transesterification reaction using alcohol and catalyst. The effect of temperature on the conversion was studied in this research. The research was carried out in batch at various temperatures of 45, 55 and 65 oC by reacting used cooking oil and bioethanol with catalyst K2CO3/γ-Al2O3. The ratio of used cooking oil and bioethanol is 1:9 and the concentration of catalyst is 3%. The reaction was run for 5, 10, 15, 30, 60, and 120 minutes, then the biodiesel was separated from the catalyst and glycerol. Furthermore, the biodiesel samples were analyzed by GC-MS to determine the alkyl ester content. The result showed that the highest conversion was 86.39% at 65oC. The biodiesel product complies with SNI 7182:2015, with a density of 871.7 kg/m3, kinematic viscosity of 4.82 mm2/s, flash point of 176oC, cloud point of 9oC, copper plate corrosion number 1, acid number 0.39 mg-KOH/g, total glycerol 0.16%, and ester content 98.3%.

Keywords


biodiesel; used cooking oil; bioethanol; K2CO3/y-Al2O3; transesterification

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References


Budiawan, R., Zulfansyah, Fatra, W., & Helwani, Z., Off-grade palm oil as a renewable raw material for biodiesel production by two-step processes, Chemical Engineering on Science and Application 2013; 21.

Budiman, A. Kusumaningtyas, R.D., Pradana, Y.S., dan Lestari, N.A. Biodiesel Bahan Baku, Proses, dan Teknologi, Yogyakarta : Gadjah Mada University Press; 2017, hal. 39-41.

Erchamo, Y.S., Mamo, T.T., Adam, G., and Mekonnen, Y.S. Improved biodiesel production from waste cooking oil with mixed methanol-ethanol using enhanced eggshell-derived CaO nano-catalyst. Sci. Rep. 2021; 11:6708.

Fangfang, F., Alagumalai, A., and Mahian, O. Sustainable biodiesel production from waste cooking oil : ANN modeling and enviromental factor assesment. Sustain. Energy Technol. and Assess 2021; 46:101265.

Galadima, A. and Muraza, O. Waste materials for production of biodiesel catalysts: Technological status and prospects. J. Clean. Prod. 2020; 263: 121358.

Gonzaga, V.E., Romero, R., Gomez-Espinosa, R.M., Romero, A., Matinez, S.L., and Natividad, R. Biodiesel production from waste cooking oil catalyzed by a bifunctional catalyst. ACS Omega 2021; 6: 24092-24105.

Guo, M., Jiang, W., Chen, C., Qu, S., Lu, J. and Ding, J., Process optimization of biodiesel production from waste cooing oil by esterification of fatty acids using La3+/ZnO-TiO2 photocatalyst, Energy Convers. Manag., 2021; 229: 113745.

Gutiérrez-Zapata, C.A., Martínez, D. B., Collazos, C. A., Acuña, H.E.C., Cuervo, J. A. and Fernandez, C.P. Productions of sunflower oil biodiesel and used cooking oil through heterogeneous catalysts compared to conventional homogeneous catalysts. J. Phys. Conf. 2017; 786 (1): 012025.

Hamed, H.H., Mohammed, A.E., Habeeb, O.A., Ali, O.M, Aljaf, O.S, and Abdulqader, M.A. Biodiesel production from waste cooking oil using homogeneous catalyst. Egypt. J. Chem. 2021; 64 (6): 2827-2832.

Kawentar, W.A. and Budiman, A. Synthesis of biodiesel from second-used cooking oil. Energy Procedia 2013; 32: 190-199.

Komintarachat, C. and Chuepeng, S. Catalytic enhancement of calcium oxide from green mussel shell by potassium chloride impregnation for waste cooking oil-based biodiesel production. Bioresour. Technol. Rep. 2020; 12: 100589.

Naeem, A., Khan, I.W., Farooq, M., Mahmood, T., Din, I.U., Ghazi, Z.A., and Saeed, T. Kinetic and optimization study of sustainable biodiesel production from waste cooking oil using novel heterogeneous solid base catalyst. Bioresour. Technol. 2021; 328: 124831.


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