Kinetika Reaksi Transesterifikasi Minyak Biji Ketapang (Terminalia Catappa L) Pada Proses Produksi Metil Ester

Harun Al Rasyid, Rahmad Nasir

Abstract

Study on the kinetics of the transesterification reaction of ketapang seeds oil (Terminalia catappa l) of methyl ester production processusing sokletation extraction have been carried out. The ketapang seeds oil had been dissolved and then the several gram of sample were solektated using petroleum benzene solvent. Extraction followed by distillation to obtain pure ketapang oil.The catalyst used in the manufacture of biodiesel is the KOH with catalyst concentration 0.5% b/b KOH / ketapang seed oil.The solvent used was methanol with molar ratio of ketapang seed oil was 6:1.The kinetics of the transesterification reaction studied by taking 50 ml samples of the three-neck flask with a time interval (10, 20, 30, 40, 50 and 60 min) at a temperature of 30 ° C and a stirring speed of 2140 rpm.Sample is poured in the bottles that had been poured of 50 ml of water and allowed to stand in a refrigerator at a temperature of 20° C for 24 hours.Methyl esters are then separated from the glycerol and water using a separating funnel and wash using a NaSO4 in order to in the water which still contained the methyl ester.Pure methyl esters then were analyzed by GCMS to determine the content of methyl ester and HNMR to calculate the kinetics transesterification reaction of ketapang seed oil to a temperature of 30 o C.The results showed that the ideal time to process for production of methyl ester for temperature 30o C is 60 min with the kinetics of the reaction on orde 2 that are the highest graphics and the equation transesterification reaction rate ketapang seed oil into methyl ester is

 

Keywords

chemistry

References

Agatemor, C., 2006, Studies of Selected Physicochemical Properties of Fluted Pumpkin(Telfairia occidentalis Hook F.) Seed Oil and Tropical Almond (Terminalia catappia L.)Seed Oil,Pakistan Journal of Nutrition5 (4) : 306 – 307.

Altiokka, M. R. and Citak, A, 2003, Kinetics Study of Esterification of Acetid Acid with Isobutanol in The Presence of Amberlite Catalyst, Applied Catalyst A, General, 239, 141-148.

Anwar, C., 1994, Kromatografi Manual, Laboratorium Universitas Mataram, Lombok.

Ardiyanti, A. R., Utomo, J., Chandra, G., dan Koharudin, 2003, Pengaruh Kejenuhan Minyak, Jenis, dan Jumlah Katalis Basa NaOH, K2CO3, serta Jenis dan Jumlah Alkohol (Metanol an Etanol) pada Produksi Biodiesel, Seminar Nasional teknik kimia Indonesia, Yogyakarta.

Azis, I., 2005, Pembuatan Biodiesel dari Minyak Jelantah dalam Reaktor Alir Tangki Berpengaduk dan Uji Performance Biodiesel pada Mesin.

Balogun, A. M. dan Fetuga, B. L., 1985, Fatty Acid Composition of Seed Oils of Some Membes of the Meliaceae and Combretaceae Families,JAOCS, Vol. 62, no. 3, Hal. 539 – 531.

Rachmaniah, O., 2004, Transesterifikasi Minyak Mentah Dedak Padi Menjadi Biodiesel Dengan Katalis Asam.Laporan Thesis, Jurusan Teknik Kimia FTI-ITS, Surabaya.

Darnoko, D dan Cheryan M., 2000, Continous Production of Palm Methyl Ester. J. Am. Oil Chem. Soc, 77, 1269-1272.

Fukada, H., Kondo, and Noda H., 2010, Biodiesel Fuel Production by Transesterifikasi of Oils. J. Biosci. Bioeng.

Freedman, B., Pryde.E.H. and Mounts. T.L., 1984, Variables Affecting the Yields of Fatty Esters from Transesterfied Vegetable Oils.

Gritter, 1991, Pengantar Kromatografi, ITB, Bandung.

Haas, M.J., 2005, Improving the economics of biodiesel production through the use of low value lipids as feedstocks: vegetable oil soapstock, Fuel Process Technol, 86, 1087– 1096.

Hambali, Erliza, 2007, Teknologi Bioenergi, PT Agromedia, Jakarta.

Achmad, H. dan Tupamalu, 1992, Elektrokimia dan Kinetika Kimia, ITB, Bandung.

Hui, Y.H., 1996, Bailey’s Industrial Oil and Fat Product. Vol 1, 5ed, pp, 46-53, John Wiley and Sons, New York.

Kateran, 1986, Pengantar Teknologi Minyak dan Lemak Pangan, UI Press, Jakarta.

Kirk, R. E. and Othmer, D. F., 1992, Encyclopedia of Chemical Technology, The Interscience Encyclopedia Inc, New York.

Kusmiyati, 1995, Kinetika Pembuatan Metil Ester Pengganti Minyak Diesel dengan Proses Metanolisis Tekanan Lebih dari 1 atm, Tesis, Pasca Sarjana UGM, Yogyakarta.

Knothe, G., 2000, Monitoring a Progressing Transesterification Reaction by Fiber- Optic Near Infrared Spectroscopy with Correlation to 1H Nuclear Magnetic Resonance Spectroscopy, J. Am. Oil Chem. Soc., 77, 9483, 489–493.

Matsjeh, 1994, Kimia Organik II, UGM, Yogyakarta.

Mittlebach, M. and Remschmidt, C., 2004, Biodiesel The Comprehensive Handbook, Vienn, Boersedruck Ges.m.bH .

Nijhuis, T. A., beers, A. E. W., Kapteijn, F., and Moulijn, J. A., 2002, Water removal by Reactive Stripping for Solid-Acid Catalyzed Esterification in A Monolithic Reactor, Chem. Eng.Sci., 57, 1627-1632.

Petrucci, Ralph H, 1987, Kimia Dasar Prinsip dan Terapan Modern Jilid 2, Erlangga, Jakarta.

Prakoso, T., Indra, B. K., Nugroho, R. H., 2003, Esterifikasi Asam Lemak Bebas dalam CPO untuk Produksi Metil Ester, Seminar Nasional Teknik Kimia Indonesia, Yogyakarta.

Purwono, S., Yulianto, N., Pasaribu, R., 2003, Biodiesel dari Minyak Kelapa, Seminar Nasional Teknik Kimia Indonesia, Yogyakarta.

Rahayu, S. S., dan Rarasmedi, I., 2003, Biodiesel dari Minyak Sawit dan Fraksi Ringan Minyak Fusel, Seminar Nasional teknik kimia Indonesia, Yogyakarta.

Sadukh, A., 2005, Skripsi pembuatan minyak kelapa secara fermentasiberulangmelalui imobilisasi Sacharomices cerreviceae dan analisa bilangan asam minyak yang dihasilkan, FKIP Undana. Kupang.

Sastrohamidjojo, H., 1991, Kromatografi, Liberti, Yokyakarta.

Setyawardhani, A, S., 2003, Metanolisis Asam Lemak dari Minyak Kacang Tanah untuk Pembuatan Biodiesel, Tesis diajukan kepada Fakultas pasca Sarjana UGM, Yogyakarta.

Soerawidjaja, Tatang H., 2006, Fondasi-Fondasi Ilmiah dan Keteknikan dari Teknologi Pembuatan Biodiesel, Handout Seminar Nasional “Biodiesel Sebagai Energi Alternatif Masa Depan” UGM Yogyakarta.

Soeradjaja, T. H., 2003, Energi Alternatif-Biodiesel (Bagian 2), http:www.kimia.lipi.go.id/index.phppilihan=berita&id=13.

Sofiyah, 1995, Kinetika Reaksi Etanolisis Minyak Biji Kapuk dengan Katalisator Natrium Hidroksida dan Penambahan Garam anorganik, Tesis diajukan kepada Fakultas pasca Sarjana UGM, Yogyakarta.

Sudarmadji, 1994, Analisa Untuk Bahan Makanan dan Pertanian, Liberty, Jakarta.

Sudradjat, R., Sukardi, Mangunwidjaja, D., Suryani,A., Sahirman, 2008, Kinetika Reaksi Transesterifikasi Minyak Biji Nyamplung (Calophyllun inophyllum) Pada Proses Produksi Biodiesel, New York, Hancourt Brace & Company.

Skoog, D.A., Holler, F.J & Nieman, A.T., 1997, Principle of Instrumental Analysis, Fifth Edition, Departemen Teknologi Industri Pertanian-IPB, Bogor.

Syukri, S., 1999, Kimia Dasar 2, ITB, Bandung.

Srivastava, Anjana dan Prasad Ram, 1999,Triglycerides–Based Diesel Fuels, Pergamon.

Takeuchi, Y, 2009, Spektroskopi NMR, http://k12tiumb.blogspot.com/2009/11/bab-43-spektroskopik-nmr.html, diakses tanggal 18 juni 2011.

Tjitrosoepomo, G., 2003, http://en.wikipedia.org/wiki/Terminalia catappa, diakses tanggal tanggal 6 Juli 2009.

Triyono, 1994,Kimia Fisikia, Dasar-dasar Kinetika dan Katalis, Departemen Direktorat Jendral Pendidikan Tinggi, Jakarta.

Underwood dan Day, 1986, Analisis Kimia Kuantitatif, Erlangga, Jakarta.

Wardiyono, 2009, Terminalia catappa, http://www.kehati.or.id/florakita, diakses tanggal 6 Januari 2011.

Widiono, B., 1995, Alkoholisis Minyak biji Jarak dalam Reaktor Kolom Berpulsa Secara Sinambung Ditinjau dari Segi Kinetika, Tesis diajukan kepada Fakultas Pasca Sarjana UGM, Yogyakarta.

Winarno, F.G., 1997, Kimia Pangan dan Gizi, Gramedia Pustaka Utama, Jakarta.

Yadav, G.D. and Thatagar, M. B., 2002, Esterification of Maleic Acid with Ethanol Over Cation-Exchange Resin Catalys, React. Funct. Polym., 52,99-110.

Yoeswono, Triyono and Tahir, I., 2008, Kinetics of Palm Oil Transesterification in Methanol with Possium Hydroxide as a Catalyst, Indo. J. Chem., 8 (2), 219-225.

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