BIOETANOL FUEL GRADE DARI TALAS (Colocasia Esculenta)

Endah Retno Dyartanti, Enny Kriswiyanti Artati, Adrian Nur

Abstract

Fuel grade bioethanol preparation from talas (colocasia esculenta L) flour needs some steps. First, polysaccharide in talas flour is converted to monosaccharide (glucose) in hydrolysis process. The next step is fermentation that glucose is converted to ethanol by Sacharomyces cereviceae yeast. The final of steps is distillation and adsorption methods that ethanol is concentrated and dried to get min 99 % ethanol. The objectives of the researches using talas flour as source of alternative energy are to increase economic value of talas and to decrease using fossil energy. The aims of this research were to find the effect of α-amilase and glucoamilase concentrate to glucose results in hydrolyze reaction, to find the optimum condition of fermentation using Saccharomyces cereviceae yeast, and to study ethanol purification in distillation and adsorption method with CaO. Hydrolysis was carried out in three necked bottle with mantle heater equipped stirrer and reflux condenser. Fermentation process was done with simple fermentation. Purification of ethanol was done with distillation method that used packed column and reflux condenser and adsorption method that used CaO as adsorbent and column filled. The result of this research was every 1 L ethanol that was 99.4 % concentrate ethanol needs 8.7 kg talas, 3 g α-amilase and 8 g glucoamilase, and 4.4 g dried Saccharomyces cerevisiace yeast. The cost of preparation ethanol was Rp 6,625.00/L.

Full Text:

PDF

References

Agra, I. B., Warnijati, S. dan Pudjianto,B., “Hidrolisis Pati dari ketela Rambat pada suhu Lebih Dari 100 OC”, Forum teknik, 115-129.

Astawan, M. dan M.W. Astawan, (1991), “Teknologi Pengolahan Pangan Nabati Tepat Guna”, 1st ed., Bogor, Akademika Pressindo, hal. 22-24,42-46.

Brown, G.G., 1987, “Unit Operations”, John Wiley and Sons Inc, New York

Buckle, K.A., R.A. Edwards, et al., (1985), “Ilmu Pangan” (terjemahan), Jakarta,

Universitas Indonesia, hal. 104-107. Budiyanto, A.K., (2002), “Mikrobiologi Terapan”, Malang, Universitas Muhammadiyah, hal. 65-66.

Departemen Teknik Kimia ITB, 2006, ”Panduan Pelaksanaan Laboratorium Instrksional I/II”, ITB Pers, Bandung Desrosier, N.W. dan J.N. Desrosier, (1997),

“The Technology of Food Preservation”, 4th ed., USA, The AVI Publishing Company, Inc., hal. 317-320.

Direktorat Gizi DEPKES RI, (1979), “Daftar Komposisi Bahan Makanan”, Jakarta, Bhratara Karya Aksara.

Ferguson, A. R. B., 2003, Implications of the USDA 2002 update on ethanol from corn: The Optimum Population Trust, Manchester, U.K., p. 11–15.

Ferguson, A. R. B., 2004, Further implications concerning ethanol from corn: Draft manuscript for the Optimum Population Trust.

Fessenden and Fessenden, 1982, ”Kimia Organik”, Erlangga, Jakarta.

Frazier, W.C., (1974), “Food Microbiology”, 2nd ed., New Delhi, Tata McGraw-Hill Publishing Co., Ltd., hal. 394-402.

Hodge, C., 2002, Ethanol use in US gasoline should be banned, not expanded: Oil & Gas Jour., September 9, p. 20–30.

Kassel, P., and Tidman, M., 1999, Ag lime impact on yield in several stillage systems, integrated crop management: Dept. Entomology, Iowa State Univ., Ames, Iowa. Stauffer, MD.; Chubey, B.B.; Dorrell, D.G. Jerusalem Artichoke. A publication of Agriculture Canada, Research Station, P. 0. Box 3001, Morden, Manitoba, ROG 1JO, Canada. 1975.

Tjokroadikoesoemo, S.P.,dkk, 1993, “HFS dan Industri Ubi Kayu Lainnya”, PT. Gramedia Pustaka, Utara, Jakarta.

Wanto dan A. Soebagyo, (1980), “Dasar-dasar Mikrobiologi Indonesia”, Jakarta, Departemen Pendidikan dan Kebudayaan, Direktorat Pendidikan Menengah Kejuruan, hal. 163.

DOI: https://doi.org/10.20961/ekuilibrium.v8i1.49558

Refbacks

  • There are currently no refbacks.