KINETIKA REAKSI HIDROLISIS GULA DARI TETES TEBU MENJADI ASAM OKSALAT
DOI:
https://doi.org/10.34151/technoscientia.v2i2.448Keywords:
kinetics, hydrolysis, molasses, oxalic acidAbstract
The kinetics of the hydrolysis of sucrose from molasses have been studied in basic aqueous solutions in the presence of potassium hydroxide. This chemical reaction is to produces oxalic acid as main product. The experiments were conducted in the flask which was completed with stirrer, heater, condenser, and thermometer, at temperatures from 80 to 100oC and at reaction times from 30 to 60 minutes. The product of hydrolysis of molasses was analyzed by using standard solution of potassium permanganate to determine the amount of oxalic acid. The results of these investigations show that the kinetics reaction of the hydrolysis of molasses was found to be first order reaction with respect to sucrose. The reaction rate constant was found to be k = 0,2055 exp(−3367,7663/RT) (in minutes−1) or the activation energy and pre-exponential factor was 3367,7663 cal/gmol and 0,2055 minutes−1, respectively.
References
Anozie, A. N. and Dzobo, J. M., 2006, Kinetics of the Hydrolisis of Palm Oil and Palm Kernel Oil, Ind. Eng. Chem. Res., Vol. 45, No. 5, pp. 1604 – 1612.
Apriyantono, A., Fardiaz, D., Puspitasri, N. L., Sedarnawati, dan Budiyanto, S., 1989, Petunjuk Laboratorium Analisis Pangan, Departemen Pendidikan dan Kebudayaan, Direktorat Pendidikan Tinggi, Pusat Antar Universitas Pangan dan Gizi, Institut Pertanian Bogor.
Fessenden, R. J. and Fessenden, J. S., 1994, Kimia Organik, 3 ed., Erlangga, Jakarta.
Fieser, L.S. and Fieser, M., Organic Chemistry, 3rd ed., pp.764 – 766, McGraw-Hill Book, New York.
Griffin, R.C., 1957, Technical Methods of Analysis, 2nd ed., pp. 309 – 311, McGraw-Hill Book, New York.
Groggins, P.H., 1958, Unit Process in Organic Synthesis, pp. 22 – 30, McGraw-Hill Book, New York.
Kirk, R.E., & Othmer, D. R., 1952, Encyclopedia of Chemical Technology, Vol. 16, pp. 618 – 634, The Intersince Encyclopedia, Inc., New York.
Levenspiel, O., 1999, Chemical Reaction Engineering, 3rd ed., John Wiley & Sons, New York.
Missen, R. W., Mims, C. A., and Saville, B. A., 1999, Introduction to Chemical Reaction Engineering and Kinetics, John Wiley & Sons, New York.
Purwanti, A., 1998, Hasil Samping Tanaman Pertanian, Forum Teknik, Vol. 1, pp. 33 – 41, Bandung.
Soerjadi, M., 1978, Kadar Gula dalam Budidaya Tebu, Erlangga, Vol. 1, pp. 15 – 19, Surabaya.
Trubus, 2007, Metamorfosis Limbah Tetes Tebu, www.trubus.com., tanggal tayang: 28 Mei 2007.
Wertheim, E., 1951, Text Book of Organic Chemistry, 3rd ed., pp. 392 – 440, The Blackinston Company, Inc., New York.
Wikipedia, 2007, Oxalic Acid, www.wikipedia.com., the Wikipedia Foundation, Inc., USA.
