Rapid In Situ Transesterification of Papaya Seeds to Biodiesel with The Aid of Co-solvent

Elvianto Dwi Daryono


Methanol and co-solvent after being separated from the rest of the methyl ester had only discarded, but if reused will save the reactant and the co-solvent used. Variables of research is the reaction time is 3, 8, 13, 18, 23, 28 and 33 minutes and the mass addition of methanol and co-solvent residual is 0, 5 and 10% by weight. Papaya seeds that have been dried and pulverized size + 20/-30 mesh around 100 grams introduced into the reactor and added methanol, THF and the catalyst NaOH and the reaction carried out according to the study variables and operating conditions. After the reaction was complete, added HCl 1 mol /L to pH 4 to stop the reaction and separated between cake and the filtrate. The filtrate was distilled at 70°C until no distillate dripping. Distillate was a mixture of methanol and co-solvent the rest of reaction to be used again in the reaction. Distillation residues incorporated into separating funnel and allowed to stand for 12 hours in order to form two layers. The bottom layer was the result of the neutralization reaction and the upper layer as the methyl ester methyl ester concentration was analyzed by GC. The optimum conditions of the research on the mass addition of methanol and co-solvent remaining 10% and a reaction time of 8 minutes, methyl ester concentration of 99.39%, yield of 79.51%, density of 0.87 g/cm3, and acid valueof 0.74 mgKOH/g. These results regards with SNI 04-7182-2006.

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methanol; co-solvent; reused; papaya seeds; methyl ester

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T.P.S.M. Abdulkarim, H.M. Ghazali, “Properties of Carica Papaya L. (Papaya) seed oil following extractions using solvent and aqueous enzymatic methods”, Journal of Food Lipids, vol. 12, pp. 62-76, 2005.

P. Sammarphet, Investigation of the papaya seed oil properties for development in to edible oil, Master Thesis Mahidol University, 2006.

M. Bender, “Economic feasibility review for community-scale farmer cooperatives for biodiesel”, Bioresour.Technol., vol. 70, pp. 43-50, 1999.

M.J. Haas, A.J. McAloon, W.C. Yee, T.A. Foglia, “A process model to estimate biodiesel production costs”, Bioresour. Technol, vol. 97, pp. 671, 2006.

R. Zakaria, A.P. Harvey, “Direct production of biodiesel from rapeseed by reactive extractive/in situ transesterification”, Fuel Processing Technology, vol. 102, pp. 53-60, 2012.

K.G. Georgogianni, M.G. Kontominas, P.J. Pomonis, D. Avlonitis, V. Gergis, “Conventional and in situ transesterification of sunflower seed oil for the production of biodiesel”, Fuel Processing Technology, vol. 89, pp. 503-509, 2008.

J. Qian, F. Wang, S. Liu, Z. Yun, “In situ alkaline transesterification of cottonseed oil for production of biodiesel and nontoxic cottonseed meal”, Bioresource Technology, vol. 99, pp. 9009-912, 2008.

O.D. Samuel, O.U. Dario, “A critical review of in-situ transesterification process for biodiesel production”, The Pacific Journal of Science and Technology, vol. 12 No. 2, pp. 72-79, 2012

S. Mahajan, S.K. Konar, D.G.B. Boocock, “Standard biodiesel from soybean oil by a single chemical reaction, JAOCS, vol. 83, pp. 641-645, 2006.

D.G.B. Boocock, S.K. Konar, V. Mao, H. Sidi, “Fast one-phase oil-rich process for the preparation of vegetable oil methyl esters”, Biomass Bioenergy, vol. 11, pp. 43-50, 1996.

J. Zeng, X. Wang, B. Zhao, J. Sun, Y. Wang, “Rapid in situ transesterification of sunflower oil, Ind. Eng. Chem. Res., vol. 48, pp. 860-856, 2009.

S.H. Shuit, K.T. Lee, A.H. Kamaruddin, S. Yusup, “Reactive Extraction and In Situ of JatrophaCurcas L. Seeds for The Production of Biodiesel”, Fuel, vol. 89, pp. 527-530, 2010.

G. Hincapie, F. Mondragon, D. Lopez, “ Conventional and In Situ Transesterification of Castor Seed Oil for Biodiesel Production”, Fuel, vol. 90, pp. 1618-1623, 2011.

D.S. Khang, L.F. Razon, C.F. Madrazo, R.R.Tan, “ In situ transesterification of coconut oil using mixtures of methanol and tetrahydrofuran”, Chemical Engineering Research and Design, vol. 92, pp. 1512-1518, 2014.

E.D. Daryono, A.C. Rengga, I. Safitri, “Production of process of methyl ester from mahogany seed oil with in situ transesterification using co-solvent THF (Tetrahydrofuran)”, Reaktor, vol. 15, pp. 51-58, 2014.

E.D. Daryono, “In situ transesterification of mahogany seed oil (Sweitenia Macrophylla King) become of methyl ester with co-solvent n-hexane”, Int.J.ChemTech Res., vol. 8, pp. 1026-1031, 2015.

I.A. Kartika, P. Evon, M. Cerny, O. Suparno, D. Hermawan, D. Ariono, L. Rigal, “Simultaneous solvent extraction and transesterification of jatropha oil for biodiesel production, and potential application of the obtained cakes for binderless particleboard”, Fuel, vol. 181, pp. 870-877, 2016.

C.T.S.P. Charvet, M.R.J.V. Duya, A.V.G. Miller, L.F. Razon, “Evaluation of the biodiesel fuel properties of fatty acid methyl esters from Carica Papaya L”, The Philippine Agricultural Scientist, vol. 94 No. 1, pp. 88-92, 2011.

J.V. Gerpen, B. Shanks, R. Pruszko, D. Clements, G. Knothe, “Biodiesel Production Technology”, National Renewable Energy Laboratory (NREL), 2004.

Dharmesh Kumar N.B, M.C. Math, “Application of response surface methodology for optimization of biodiesel production by transesterification of animal fat with methanol, International Journal of Renewable Energy Research, vol. 6 No. 1, pp. 74-79, 2016.


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